chore: bump version to 0.5.0

fix(deps): force qs >= 6.15.2 to resolve DoS advisory

.dockerignore

@@ -0,0 +1,15 @@
+.git
+.github
+node_modules
+data
+*.db
+*.db-shm
+*.db-wal
+.env
+.env.*
+!.env.example
+*.log
+.claude
+CLAUDE.md
+TODO.md
+docker-compose.yml

.env.example

@@ -5,3 +5,19 @@ SESSION_SECRET=replace-with-a-random-64-character-hex-string
 SESSION_MAX_AGE_HOURS=168   # default: 168 (7 days)
 PORT=3000
 DB_PATH=/app/data/check-printing.db
+
+# Public base URL of the app — used to build password reset links.
+# Strongly recommended in production (prevents host-header link poisoning).
+APP_BASE_URL=https://checks.example.com
+
+# Set to 1 when running behind a reverse proxy (TLS termination) so client IPs
+# and HTTPS detection work correctly. Leave unset for direct LAN access.
+TRUST_PROXY=
+
+# OIDC / SSO (optional — omit or leave blank to disable)
+OIDC_ENABLED=false
+OIDC_DISCOVERY_URL=https://auth.example.com/.well-known/openid-configuration
+OIDC_CLIENT_ID=
+OIDC_CLIENT_SECRET=
+OIDC_REDIRECT_URI=https://checks.example.com/api/auth/oidc/callback
+OIDC_BUTTON_LABEL=Sign in with SSO

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,35 @@
+---
+name: Bug Report
+about: Report a bug in the system
+title: "[Bug]: "
+labels: bug
+assignees: ''
+---
+
+### Description
+
+A clear and concise description of the bug.
+
+### Steps to Reproduce
+
+1. Go to '...'
+2. Click on '...'
+3. See the error.
+
+### Expected Behavior
+
+Explain what you expected to happen.
+
+### Screenshots
+
+Add screenshots if applicable.
+
+### Environment
+
+- OS: [e.g., Windows, macOS, Linux]
+- Browser: [e.g., Chrome, Firefox]
+- Version: [e.g., 1.0.0]
+
+### Additional Context
+
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,22 @@
+blank_issues_enabled: false
+issue_templates:
+  - name: "Bug Report"
+    description: "Report a bug in the system."
+    title: "[Bug]: "
+    labels: ["bug"]
+    body: "./ISSUE_TEMPLATE/bug_report.md"
+  - name: "Feature Request"
+    description: "Propose a new feature or improvement."
+    title: "[Feature]: "
+    labels: ["enhancement"]
+    body: "./ISSUE_TEMPLATE/feature_request.md"
+  - name: "Documentation"
+    description: "Suggest updates or additions to the documentation."
+    title: "[Docs]: "
+    labels: ["documentation"]
+    body: "./ISSUE_TEMPLATE/documentation.md"
+  - name: "General Report"
+    description: "Provide general feedback or inquiries."
+    title: "[General]: "
+    labels: ["general"]
+    body: "./ISSUE_TEMPLATE/general_report.md"

.github/ISSUE_TEMPLATE/documentation.md

@@ -0,0 +1,23 @@
+--
+name: Documentation
+about: Suggest updates or additions to documentation
+title: "[Docs]: "
+labels: documentation
+assignees: ''
+---
+
+### Documentation Update
+
+What part of the documentation needs to be updated or added?
+
+### Why Is This Needed?
+
+Explain the importance of this update.
+
+### Suggested Changes
+
+Provide a detailed description of the changes.
+
+### Additional Context
+
+Include any related resources.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,23 @@
+---
+name: Feature Request
+about: Suggest a new feature or improvement
+title: "[Feature]: "
+labels: enhancement
+assignees: ''
+---
+
+### Feature Description
+
+What feature would you like to see?
+
+### Why Is This Needed?
+
+Explain the problem or need for this feature.
+
+### Suggested Solutions
+
+Describe how this feature could be implemented.
+
+### Additional Context
+
+Add any relevant screenshots, links, or resources.

.github/ISSUE_TEMPLATE/general_report.md

@@ -0,0 +1,15 @@
+---
+name: General Report
+about: Provide general feedback or inquiries
+title: "[General]: "
+labels: general
+assignees: ''
+---
+
+### Feedback or Inquiry
+
+Provide your feedback or inquiry.
+
+### Additional Information
+
+Add any other relevant details here.

README.md

@@ -1,124 +1,214 @@
 # check-printing
 
-Self-hosted web app for printing checks and bank deposit slips. A containerized Node.js web app accessible on the local network.
+Self-hosted web app for printing checks and bank deposit slips on blank check stock. Runs as a containerized Node.js app accessible on your local network or behind a reverse proxy.
+
+## Features
+
+- Check ledger with search, filtering, and sorting
+- Precise 3-up check PDFs (three checks per 8.5" x 11" letter page, multi-page supported)
+- MICR E-13B encoding for routing/account lines (GnuMICR font, GPL-2.0)
+- Bank deposit slips with digit-column formatting and MICR line
+- Deposit reports for filing
+- Visual drag-and-drop check layout editor
+- Multi-account support with per-user access control
+- OIDC / SSO login (OpenID Connect)
+- Password reset via email (SMTP)
+- QBO CSV import for checks and deposits
+- ezCheckPrinting .mdb import
 
 ## Stack
 
 - **Runtime:** Node.js 20
 - **Framework:** Express 4
 - **Database:** SQLite via `better-sqlite3`
-- **PDF generation:** PDFKit with embedded GnuMICR E-13B font (GPL-2.0)
+- **PDF generation:** PDFKit with embedded GnuMICR E-13B font
 - **Frontend:** Vanilla JS, no framework
-- **Container:** Docker Compose pulling from Docker Hub
+- **Container:** Docker Compose pulling from Docker Hub (`dogiakos/check-printing`)
 
 ## Getting started
 
 ### Production (Docker)
 
+1. Create a `.env` file (see `.env.example`):
+
+```bash
+SESSION_SECRET=$(openssl rand -hex 32)
+```
+
+2. Start the container:
+
 ```bash
 docker compose pull
 docker compose up -d
 ```
 
-On first launch, the app detects no users are configured and opens a **setup wizard** in the browser. Create the first admin account, then configure checkwriter info, bank info, and account/routing numbers. If you have an existing ezCheckPrinting `.mdb` file, click **Import .mdb** instead.
+3. Open the app in your browser. On first launch, create the initial admin account when prompted.
+
+4. Use the setup wizard to configure your first checking account (organization info, bank info, routing/account numbers), or import an existing ezCheckPrinting `.mdb` file.
+
+#### Upgrading from images before v0.5
+
+The container now runs as the unprivileged `node` user (UID 1000). Existing data
+volumes were written as root, so fix ownership once before upgrading:
+
+```bash
+docker compose down
+docker run --rm -v check-printing-data:/data alpine chown -R 1000:1000 /data
+docker compose up -d
+```
 
 ### Development (local)
 
 ```bash
 npm install
-npm run dev        # nodemon src/app.js
+cp .env.example .env   # edit .env with your values
+npm run dev             # nodemon with --env-file=.env
 ```
 
-## Authentication and user roles
+## Authentication
 
 All access requires login. The first run prompts you to create an admin account.
 
-Three roles are available:
+### Roles
 
 | Role | Access |
-|------|--------|
-| **admin** | Full access to all accounts; create/edit/delete users and accounts |
-| **editor** | Read and write access to assigned accounts |
-| **viewer** | Read-only access to assigned accounts |
+| --- | --- |
+| **Admin** | Full access to all accounts; manage users, accounts, and app settings |
+| **Editor** | Read and write access to assigned accounts |
+| **Viewer** | Read-only access to assigned accounts |
 
-Admins have editor access to all accounts automatically. Non-admin users are assigned per-account roles individually. User management is available in the **Users** panel (admin only). Any user can change their own password from the account menu.
+Admins have editor access to all accounts automatically. Non-admin users are assigned per-account roles individually.
+
+### User management
+
+Available in the **Manage Users** panel (admin only):
+
+- Create, edit, and delete users
+- Assign per-account roles
+- Configure SMTP for password reset emails
+- Link/unlink OIDC identities
+
+Any user can change their own password and link/unlink their OIDC identity from the account menu (click your username in the header).
+
+### OIDC / SSO
+
+OIDC login is configured via environment variables (see below). When enabled, a **Sign in with SSO** button appears on the login page.
+
+Users must link their local account to their OIDC identity before SSO login will work. Two ways to link:
+
+1. **Self-service:** Sign in with your password, click your username, then click **Link My Account** in the Single Sign-On section
+2. **Admin:** Edit a user in the Manage Users panel and set the OIDC Subject and Issuer fields
+
+OIDC uses the authorization code flow with PKCE. The provider must have the redirect URI registered: `https://your-app.example.com/api/auth/oidc/callback`
 
 ## Multi-account support
 
-The app supports multiple checking accounts in a single instance. Each account has its own check ledger, deposit records, and layout configuration. Admins can create, edit, and delete accounts. Deleting an account removes all associated checks, deposits, and layout data.
+The app supports multiple checking accounts in a single instance. Each account has its own check ledger, deposit records, and layout configuration. Use the account switcher in the header to switch between accounts. Admins can create, edit, and delete accounts.
 
-## Printing
+## Checks
 
-1. Select 1–3 checks from the ledger (checkbox column)
+1. Select 1 or more checks from the ledger (checkbox column)
 2. Click **Generate PDF**
-3. A 3-up 8.5"×11" PDF opens in a new tab — three 3.5" check slots per page
-4. Print from the browser; checks are marked as printed in the ledger
+3. A 3-up 8.5" x 11" PDF opens in a new tab
+4. Print from the browser; checks are marked as printed
 
-Use the **Reprint** button on printed checks to regenerate without re-marking them.
+Use **Reprint** on printed checks to regenerate without re-marking.
 
-Multi-page PDFs are supported when more than 3 checks are selected.
+### Check layout
+
+- Page: 8.5" x 11", zero margins
+- Three check slots of 3.5" each
+- MICR line at 0.267" from bottom of each slot
+- MICR format: `A{routing}A {account}C {checkNo}A` (GnuMICR E-13B encoding)
 
 ## Deposit slips
 
-Switch to the **Deposits** tab in the toolbar to manage bank deposits.
+1. Switch to the **Deposits** tab
+2. Click **+ New Deposit**
+3. Enter deposit date, currency, coin, and cash back amounts
+4. Add each check (check number, payee, memo, amount) -- totals update live
+5. **Save Deposit**, then click **Deposit Slip** or **Report** to generate a PDF
 
-1. Click **+ New Deposit** to open the deposit entry panel
-2. Enter the deposit date, currency, coin, and cash back amounts
-3. Add each check being deposited (check number, payee, memo, amount) — totals update live
-4. Click **Save Deposit**, then **Deposit Slip** or **Report** to generate a PDF
+**Deposit Slip** generates a 3.375" x 8.5" PDF matching physical bank deposit slip stock with digit-column formatting, MICR line, and rotated totals.
 
-**Deposit Slip** generates a precisely positioned 3.375" × 8.5" PDF matching physical bank deposit slip stock, including:
+**Deposit Report** generates a plain formatted ledger document for filing.
 
-- Style A background (form lines and labels drawn server-side — no preprinted stock required)
-- Digit-column amount formatting
-- Routing/account line in E-13B magnetic ink character recognition font, rotated 90°
-- Rotated deposit total and check count in the left margin
+## Visual layout editor
 
-**Deposit Report** generates a plain formatted ledger document listing all checks, cash totals, and the final deposit amount — suitable for filing.
+Click the **layout** button in the header (editors and above) to open the layout editor.
 
-Generating a deposit slip marks the deposit as printed in the ledger.
+- Full-screen canvas with inch rulers
+- Drag any check element to reposition it
+- Position readout in inches and fractions with nudge buttons
+- Visibility toggle to hide fields from PDFs
+- Auto-saves on change
+- **Reset to Defaults** restores the built-in layout
 
-## Importing from QuickBooks Online (QBO CSV)
+## Importing
 
-Checks and deposits can be imported from a QuickBooks Online CSV export. Click **Import QBO CSV** in the toolbar, select the file, choose whether to import checks or deposits, and review the parsed records before confirming.
+### QuickBooks Online (QBO CSV)
 
-The importer handles:
+Click **Import QBO** in the toolbar. Supports standard QBO export columns, automatic type filtering (checks vs. deposits), duplicate detection, and auto-numbering.
 
-- Standard QBO export column layouts (`Date`, `Transaction Type`, `Num`, `Name`, `Memo/Description`, `Amount`, `Debit`, `Credit`)
-- Automatic type filtering — checks are matched by transaction type `Check`, deposits by `Deposit`
-- Duplicate detection — existing check numbers are skipped
-- Auto-assignment of check numbers when the source CSV has no `Num` value
-- Grouping of deposit rows by date into individual deposit records
+### ezCheckPrinting (.mdb)
 
-## Importing from ezCheckPrinting (.mdb)
+**Via the UI:** Click **Import .mdb** in the toolbar, select the file, and click Import.
 
-Two ways to import:
-
-**Via the UI (recommended):** Click **Import .mdb** in the toolbar, select the file, and click Import. The server runs the migration and shows the log output.
-
-**Via CLI** (inside the container or locally with `mdbtools` installed):
+**Via CLI** (inside the container):
 
 ```bash
 docker exec -it check-printing node migrations/import-mdb.js \
   --file "/app/data/YourAccount.mdb"
 
 # Preview without writing:
-node migrations/import-mdb.js --file YourAccount.mdb --dry-run
+docker exec -it check-printing node migrations/import-mdb.js \
+  --file "/app/data/YourAccount.mdb" --dry-run
 ```
 
-The script imports account config (T100), logo (Settings), check layout (T200), and check history (T104).
-
-## Check layout
-
-- Page: 8.5" × 11", zero margins
-- Three check slots of 3.5" each; remaining ~0.5" is tear-off strip
-- MICR line at 0.267" from bottom of each slot
-- MICR format: `A{routing}A {account}C {checkNo}A` (GnuMICR E-13B encoding)
-
 ## Environment variables
 
 | Variable | Default | Description |
-|----------|---------|-------------|
-| `PORT` | `3000` | HTTP port |
-| `DB_PATH` | `/app/data/check-printing.db` | SQLite database path |
-| `SESSION_SECRET` | *(random)* | Secret for signing session cookies — set explicitly in production |
+| --- | --- | --- |
+| `SESSION_SECRET` | *(required)* | Secret for signing session cookies. Generate with `openssl rand -hex 32` |
+| `SESSION_MAX_AGE_HOURS` | `168` | Session lifetime in hours (default 7 days) |
+| `PORT` | `3000` | HTTP listen port |
+| `DB_PATH` | `/app/data/check-printing.db` | SQLite database file path |
+| `APP_BASE_URL` | *(empty)* | Public base URL used in password reset links, e.g. `https://checks.example.com`. Recommended in production |
+| `TRUST_PROXY` | *(empty)* | Set to `1` when running behind a reverse proxy so client IPs and HTTPS detection work correctly |
+| `OIDC_ENABLED` | *(empty)* | Set to `true` or `1` to enable OIDC login |
+| `OIDC_DISCOVERY_URL` | *(empty)* | Provider's `.well-known/openid-configuration` URL |
+| `OIDC_CLIENT_ID` | *(empty)* | OIDC client ID |
+| `OIDC_CLIENT_SECRET` | *(empty)* | OIDC client secret |
+| `OIDC_REDIRECT_URI` | *(empty)* | Full callback URL, e.g. `https://checks.example.com/api/auth/oidc/callback` |
+| `OIDC_BUTTON_LABEL` | `Sign in with SSO` | Text shown on the SSO login button |
+
+SMTP settings for password reset emails are configured in the admin UI (Manage Users > Email Settings).
+
+## Docker Compose
+
+```yaml
+services:
+  check-printing:
+    image: dogiakos/check-printing:latest
+    container_name: check-printing
+    restart: unless-stopped
+    ports:
+      - "3003:3000"
+    volumes:
+      - check-printing-data:/app/data
+    environment:
+      - SESSION_SECRET=${SESSION_SECRET}
+      # Optional: public base URL for reset links, reverse-proxy support
+      - APP_BASE_URL=${APP_BASE_URL:-}
+      - TRUST_PROXY=${TRUST_PROXY:-}
+      # Optional: OIDC / SSO
+      - OIDC_ENABLED=${OIDC_ENABLED:-}
+      - OIDC_DISCOVERY_URL=${OIDC_DISCOVERY_URL:-}
+      - OIDC_CLIENT_ID=${OIDC_CLIENT_ID:-}
+      - OIDC_CLIENT_SECRET=${OIDC_CLIENT_SECRET:-}
+      - OIDC_REDIRECT_URI=${OIDC_REDIRECT_URI:-}
+      - OIDC_BUTTON_LABEL=${OIDC_BUTTON_LABEL:-Sign in with SSO}
+
+volumes:
+  check-printing-data:
+```

docker-compose.yml

@@ -14,6 +14,17 @@ services:
       - DB_PATH=/app/data/check-printing.db
       # Required in production — generate with: openssl rand -hex 32
       - SESSION_SECRET=${SESSION_SECRET}
+      # Public base URL for password reset links (recommended)
+      - APP_BASE_URL=${APP_BASE_URL:-}
+      # Set to 1 when behind a reverse proxy / TLS termination
+      - TRUST_PROXY=${TRUST_PROXY:-}
+      # OIDC / SSO (optional — omit or leave blank to disable)
+      - OIDC_ENABLED=${OIDC_ENABLED:-}
+      - OIDC_DISCOVERY_URL=${OIDC_DISCOVERY_URL:-}
+      - OIDC_CLIENT_ID=${OIDC_CLIENT_ID:-}
+      - OIDC_CLIENT_SECRET=${OIDC_CLIENT_SECRET:-}
+      - OIDC_REDIRECT_URI=${OIDC_REDIRECT_URI:-}
+      - OIDC_BUTTON_LABEL=${OIDC_BUTTON_LABEL:-Sign in with SSO}
 
 volumes:
   check-printing-data:

docker/Dockerfile

@@ -1,5 +1,7 @@
 FROM node:20-slim
 
+ENV NODE_ENV=production
+
 # mdbtools for migration script (only needed on first run, stays in image for convenience)
 RUN apt-get update && apt-get install -y --no-install-recommends mdbtools && rm -rf /var/lib/apt/lists/*
 
@@ -10,9 +12,13 @@ RUN npm ci --omit=dev
 
 COPY . .
 
-# Data volume: SQLite database and any runtime uploads
+# Data volume: SQLite database and any runtime uploads.
+# Pre-create it owned by the unprivileged user so named volumes inherit ownership.
+RUN mkdir -p /app/data && chown -R node:node /app
 VOLUME ["/app/data"]
 
+USER node
+
 EXPOSE 3000
 
 CMD ["node", "src/app.js"]

package-lock.json

@@ -1,19 +1,20 @@
 {
   "name": "ezcheck",
-  "version": "0.1.0",
+  "version": "0.5.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ezcheck",
-      "version": "0.1.0",
+      "version": "0.5.0",
       "dependencies": {
         "bcryptjs": "^3.0.3",
         "better-sqlite3": "^9.4.3",
         "express": "^4.18.3",
         "express-session": "^1.19.0",
         "multer": "^2.1.1",
-        "nodemailer": "^8.0.4",
+        "nodemailer": "^8.0.5",
+        "openid-client": "^5.7.1",
         "pdfkit": "^0.15.0"
       },
       "devDependencies": {
@@ -1391,6 +1392,15 @@
       "integrity": "sha512-xHjhDr3cNBK0BzdUJSPXZntQUx/mwMS5Rw4A7lPJ90XGAO6ISP/ePDNuo0vhqOZU+UD5JoodwCAAoZQd3FeAKw==",
       "license": "MIT"
     },
+    "node_modules/jose": {
+      "version": "4.15.9",
+      "resolved": "https://registry.npmjs.org/jose/-/jose-4.15.9.tgz",
+      "integrity": "sha512-1vUQX+IdDMVPj4k8kOxgUqlcK518yluMuGZwqlr44FS1ppZB/5GWh4rZG89erpOBOJjU/OBsnCVFfapsRz6nEA==",
+      "license": "MIT",
+      "funding": {
+        "url": "https://github.com/sponsors/panva"
+      }
+    },
     "node_modules/jpeg-exif": {
       "version": "1.1.4",
       "resolved": "https://registry.npmjs.org/jpeg-exif/-/jpeg-exif-1.1.4.tgz",
@@ -1417,6 +1427,18 @@
         "node": ">= 0.4"
       }
     },
+    "node_modules/lru-cache": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
+      "integrity": "sha512-Jo6dJ04CmSjuznwJSS3pUeWmd/H0ffTlkXXgwZi+eq1UCmqQwCh+eLsYOYCwY991i2Fah4h1BEMCx4qThGbsiA==",
+      "license": "ISC",
+      "dependencies": {
+        "yallist": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
     "node_modules/math-intrinsics": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/math-intrinsics/-/math-intrinsics-1.1.0.tgz",
@@ -1582,9 +1604,9 @@
       }
     },
     "node_modules/nodemailer": {
-      "version": "8.0.4",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-8.0.4.tgz",
-      "integrity": "sha512-k+jf6N8PfQJ0Fe8ZhJlgqU5qJU44Lpvp2yvidH3vp1lPnVQMgi4yEEMPXg5eJS1gFIJTVq1NHBk7Ia9ARdSBdQ==",
+      "version": "8.0.5",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-8.0.5.tgz",
+      "integrity": "sha512-0PF8Yb1yZuQfQbq+5/pZJrtF6WQcjTd5/S4JOHs9PGFxuTqoB/icwuB44pOdURHJbRKX1PPoJZtY7R4VUoCC8w==",
       "license": "MIT-0",
       "engines": {
         "node": ">=6.0.0"
@@ -1654,6 +1676,15 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/object-hash": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/object-hash/-/object-hash-2.2.0.tgz",
+      "integrity": "sha512-gScRMn0bS5fH+IuwyIFgnh9zBdo4DV+6GhygmWM9HyNJSgS0hScp1f5vjtm7oIIOiT9trXrShAkLFSc2IqKNgw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">= 6"
+      }
+    },
     "node_modules/object-inspect": {
       "version": "1.13.4",
       "resolved": "https://registry.npmjs.org/object-inspect/-/object-inspect-1.13.4.tgz",
@@ -1711,6 +1742,15 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/oidc-token-hash": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/oidc-token-hash/-/oidc-token-hash-5.2.0.tgz",
+      "integrity": "sha512-6gj2m8cJZ+iSW8bm0FXdGF0YhIQbKrfP4yWTNzxc31U6MOjfEmB1rHvlYvxI1B7t7BCi1F2vYTT6YhtQRG4hxw==",
+      "license": "MIT",
+      "engines": {
+        "node": "^10.13.0 || >=12.0.0"
+      }
+    },
     "node_modules/on-finished": {
       "version": "2.4.1",
       "resolved": "https://registry.npmjs.org/on-finished/-/on-finished-2.4.1.tgz",
@@ -1741,6 +1781,21 @@
         "wrappy": "1"
       }
     },
+    "node_modules/openid-client": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npmjs.org/openid-client/-/openid-client-5.7.1.tgz",
+      "integrity": "sha512-jDBPgSVfTnkIh71Hg9pRvtJc6wTwqjRkN88+gCFtYWrlP4Yx2Dsrow8uPi3qLr/aeymPF3o2+dS+wOpglK04ew==",
+      "license": "MIT",
+      "dependencies": {
+        "jose": "^4.15.9",
+        "lru-cache": "^6.0.0",
+        "object-hash": "^2.2.0",
+        "oidc-token-hash": "^5.0.3"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/panva"
+      }
+    },
     "node_modules/pako": {
       "version": "0.2.9",
       "resolved": "https://registry.npmjs.org/pako/-/pako-0.2.9.tgz",
@@ -1860,9 +1915,9 @@
       }
     },
     "node_modules/qs": {
-      "version": "6.14.2",
-      "resolved": "https://registry.npmjs.org/qs/-/qs-6.14.2.tgz",
-      "integrity": "sha512-V/yCWTTF7VJ9hIh18Ugr2zhJMP01MY7c5kh4J870L7imm6/DIzBsNLTXzMwUA3yZ5b/KBqLx8Kp3uRvd7xSe3Q==",
+      "version": "6.15.2",
+      "resolved": "https://registry.npmjs.org/qs/-/qs-6.15.2.tgz",
+      "integrity": "sha512-Rzq0KEyX/w/tEybncDgdkZrJgVUsUMk3xjh3t5bv3S1HTAtg+uOYt72+ZfwiQwKdysThkTBdL/rTi6HDmX9Ddw==",
       "license": "BSD-3-Clause",
       "dependencies": {
         "side-channel": "^1.1.0"
@@ -2542,6 +2597,12 @@
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
       "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
       "license": "ISC"
+    },
+    "node_modules/yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A==",
+      "license": "ISC"
     }
   }
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ezcheck",
-  "version": "0.2.0",
+  "version": "0.5.0",
   "description": "Self-hosted check printing web app",
   "main": "src/app.js",
   "scripts": {
@@ -14,12 +14,16 @@
     "express": "^4.18.3",
     "express-session": "^1.19.0",
     "multer": "^2.1.1",
-    "nodemailer": "^8.0.4",
+    "nodemailer": "^8.0.5",
+    "openid-client": "^5.7.1",
     "pdfkit": "^0.15.0"
   },
   "devDependencies": {
     "nodemon": "^3.1.0"
   },
+  "overrides": {
+    "qs": "^6.15.2"
+  },
   "engines": {
     "node": ">=20"
   }

public/css/style.css

@@ -22,11 +22,17 @@ body {
   background: var(--bg);
   color: var(--text);
   height: 100vh;
-  display: flex;
-  flex-direction: column;
   overflow: hidden;
 }
 
+#main-app {
+  display: flex;
+  flex-direction: column;
+  height: 100vh;
+  overflow: hidden;
+}
+#main-app[hidden] { display: none; }
+
 /* ── Header ── */
 header {
   background: var(--header-bg);
@@ -88,6 +94,18 @@ header {
 }
 
 .modal-wide { width: min(720px, 96vw); }
+.modal.modal-layout-editor { width: min(1400px, 96vw); height: 92vh; max-height: 92vh; }
+.layout-editor-body { flex: 1; min-height: 0; flex-direction: column !important; padding: 0 !important; gap: 0; overflow: hidden; }
+.layout-canvas-area { flex: 1; min-height: 0; display: grid; grid-template-columns: 24px 1fr; grid-template-rows: 24px 1fr; }
+.layout-ruler-corner { background: var(--surface); border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
+#layout-ruler-top { background: var(--surface); border-bottom: 1px solid var(--border); overflow: hidden; }
+#layout-ruler-left { background: var(--surface); border-right: 1px solid var(--border); overflow: hidden; }
+#layout-canvas-container { overflow: hidden; background: #d4d4d4; }
+.layout-controls { flex-shrink: 0; display: flex; align-items: center; gap: 14px; padding: 8px 16px; border-top: 1px solid var(--border); background: var(--surface); flex-wrap: wrap; }
+.layout-coord { display: flex; align-items: center; gap: 4px; }
+.layout-coord label { font-size: 11px; font-weight: 600; text-transform: uppercase; color: var(--text-muted); white-space: nowrap; margin: 0; }
+.layout-coord input { width: 68px; }
+.layout-coord .frac { font-size: 11px; color: var(--text-muted); min-width: 28px; }
 
 .qbo-tabs {
   display: flex;
@@ -661,7 +679,7 @@ input[type="file"] {
   right: 0;
   width: 560px;
   max-width: 98vw;
-  height: 100vh;
+  height: 100dvh;
   background: var(--surface);
   z-index: 101;
   box-shadow: -4px 0 24px rgba(0,0,0,0.15);
@@ -669,7 +687,7 @@ input[type="file"] {
   transition: transform 0.2s ease;
   display: flex;
   flex-direction: column;
-  overflow-y: auto;
+  overflow: hidden;
 }
 #deposit-panel.open { transform: translateX(0); }
 
@@ -679,6 +697,8 @@ input[type="file"] {
   flex-direction: column;
   gap: 14px;
   flex: 1;
+  overflow-y: auto;
+  min-height: 0;
 }
 
 .dep-summary {
@@ -798,17 +818,216 @@ input[type="file"] {
 .login-card h2 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
 .login-sub { font-size: 12px; color: var(--text-muted); margin-bottom: 16px; }
 
-/* ── User management ── */
-.account-checkboxes { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
-.account-checkbox-label {
+.login-divider {
   display: flex;
   align-items: center;
-  gap: 5px;
+  margin: 16px 0 12px;
+  gap: 12px;
+}
+.login-divider::before,
+.login-divider::after {
+  content: '';
+  flex: 1;
+  height: 1px;
+  background: var(--border);
+}
+.login-divider span {
+  font-size: 11px;
+  color: var(--text-muted);
+  text-transform: uppercase;
+  letter-spacing: 0.5px;
+}
+
+.btn-oidc {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  gap: 8px;
+  width: 100%;
+  padding: 10px 16px;
+  border: 1px solid var(--border);
+  border-radius: 6px;
+  background: #fff;
+  color: var(--text);
+  font-size: 13px;
+  font-weight: 500;
+  text-decoration: none;
+  cursor: pointer;
+  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
+}
+.btn-oidc:hover {
+  background: var(--bg);
+  border-color: #b0b0b0;
+  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
+}
+.btn-oidc:active {
+  background: #e8e8e8;
+}
+.btn-oidc svg {
+  flex-shrink: 0;
+  color: var(--text-muted);
+}
+
+/* ── User management ── */
+.account-checkboxes {
+  display: grid;
+  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
+  gap: 6px;
+  margin-top: 4px;
+}
+.account-checkbox-label {
+  display: grid;
+  grid-template-columns: 20px 1fr auto;
+  align-items: center;
+  gap: 8px;
   font-size: 12px;
   background: var(--bg);
   border: 1px solid var(--border);
-  border-radius: 4px;
-  padding: 3px 8px;
+  border-radius: 6px;
+  padding: 6px 10px;
   cursor: pointer;
+  height: 64px;
 }
 .account-checkbox-label:hover { border-color: var(--primary); }
+.account-checkbox-label input[type="checkbox"] {
+  justify-self: center;
+}
+.account-checkbox-label span {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  line-height: 1.3;
+}
+.account-checkbox-label select {
+  flex-shrink: 0;
+}
+
+.uf-oidc-section {
+  margin-top: 16px;
+  padding-top: 16px;
+  border-top: 1px solid var(--border);
+}
+.uf-oidc-section h4 {
+  font-size: 13px;
+  font-weight: 600;
+  margin-bottom: 10px;
+  color: var(--text-muted);
+}
+
+/* Hide layout editor button on portrait/mobile — canvas needs landscape space */
+@media (max-width: 768px), (orientation: portrait) {
+  #btn-layout-editor { display: none !important; }
+}
+
+/* ── Settings Page ── */
+.settings-page {
+  display: flex;
+  flex-direction: column;
+  height: 100vh;
+  overflow: hidden;
+}
+.settings-page[hidden] { display: none; }
+
+.settings-header {
+  background: var(--header-bg);
+  color: var(--header-fg);
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  padding: 0 1.5rem;
+  height: 44px;
+  flex-shrink: 0;
+}
+.settings-header-left { display: flex; align-items: center; gap: 12px; }
+.settings-header-right { display: flex; align-items: center; gap: 10px; }
+.settings-back-link {
+  color: rgba(255,255,255,0.7);
+  text-decoration: none;
+  font-size: 13px;
+  font-weight: 500;
+  transition: color 0.15s;
+}
+.settings-back-link:hover { color: #fff; }
+
+.settings-layout {
+  display: flex;
+  flex: 1;
+  overflow: hidden;
+  max-width: 1200px;
+  margin: 0 auto;
+  width: 100%;
+}
+
+.settings-sidebar {
+  width: 220px;
+  flex-shrink: 0;
+  padding: 20px 0;
+  border-right: 1px solid var(--border);
+  overflow-y: auto;
+  background: var(--surface);
+}
+.settings-sidebar-title {
+  font-size: 15px;
+  font-weight: 700;
+  padding: 4px 20px 16px;
+  color: var(--text);
+}
+.settings-nav-group { margin-bottom: 8px; }
+.settings-nav-label {
+  font-size: 10px;
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
+  color: var(--text-muted);
+  padding: 12px 20px 6px;
+}
+.settings-nav-item {
+  display: block;
+  padding: 7px 20px;
+  font-size: 13px;
+  color: var(--text);
+  text-decoration: none;
+  border-radius: 6px;
+  margin: 1px 8px;
+  transition: background 0.12s;
+}
+.settings-nav-item:hover { background: var(--bg); }
+.settings-nav-item.active {
+  background: var(--primary);
+  color: #fff;
+  font-weight: 500;
+}
+
+.settings-content {
+  flex: 1;
+  padding: 32px 48px;
+  overflow-y: auto;
+  max-width: 780px;
+}
+
+.settings-panel h2 {
+  font-size: 20px;
+  font-weight: 600;
+  margin-bottom: 4px;
+  color: var(--text);
+}
+.settings-panel h3 {
+  font-size: 14px;
+  font-weight: 600;
+  margin-bottom: 12px;
+  color: var(--text);
+}
+.settings-desc {
+  font-size: 13px;
+  color: var(--text-muted);
+  margin-bottom: 20px;
+  line-height: 1.5;
+}
+.settings-section {
+  background: var(--surface);
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  padding: 24px;
+  margin-bottom: 20px;
+}
+.settings-section .form-row { gap: 16px; }
+.settings-section .form-group { margin-bottom: 4px; }

public/index.html

@@ -43,6 +43,13 @@
         </div>
         <div id="login-error" class="wizard-error" hidden></div>
         <button id="btn-login-submit" class="btn-primary" style="width:100%;margin-top:8px">Sign In</button>
+        <div id="oidc-login-section" hidden>
+          <div class="login-divider"><span>or</span></div>
+          <a id="btn-oidc-login" href="/api/auth/oidc/authorize" class="btn-oidc">
+            <svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M15 3h4a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2h-4"/><polyline points="10 17 15 12 10 7"/><line x1="15" y1="12" x2="3" y2="12"/></svg>
+            <span id="btn-oidc-login-label">Sign in with SSO</span>
+          </a>
+        </div>
         <div style="text-align:center;margin-top:8px">
           <a href="#" id="link-forgot-password" style="font-size:12px;color:var(--text-muted)">Forgot password?</a>
         </div>
@@ -80,17 +87,184 @@
     </div>
   </div>
 
+  <!-- Settings page (full-page, hidden by default) -->
+  <div id="settings-page" class="settings-page" hidden>
+    <header class="settings-header">
+      <div class="settings-header-left">
+        <a href="#" id="settings-back-link" class="settings-back-link">&larr; Back</a>
+      </div>
+      <div class="settings-header-right">
+        <span id="settings-username" class="header-username"></span>
+        <button id="btn-settings-logout" class="btn-header-icon" title="Sign out">↩</button>
+      </div>
+    </header>
+    <div class="settings-layout">
+      <nav class="settings-sidebar">
+        <div class="settings-sidebar-title">Settings</div>
+        <div class="settings-nav-group" data-admin-only>
+          <div class="settings-nav-label">Administration</div>
+          <a href="#settings/users" class="settings-nav-item" data-settings-tab="users">Users</a>
+          <a href="#settings/smtp" class="settings-nav-item" data-settings-tab="smtp">Email (SMTP)</a>
+        </div>
+        <div class="settings-nav-group">
+          <div class="settings-nav-label">Account</div>
+          <a href="#settings/password" class="settings-nav-item" data-settings-tab="password">Password</a>
+          <a href="#settings/sso" class="settings-nav-item" data-settings-tab="sso">Single Sign-On</a>
+        </div>
+      </nav>
+      <main class="settings-content">
+
+        <!-- Users panel (admin only) -->
+        <div id="settings-panel-users" class="settings-panel" hidden>
+          <h2>Users</h2>
+          <p class="settings-desc">Manage user accounts and access permissions.</p>
+          <div class="settings-section">
+            <div id="users-list"></div>
+          </div>
+          <div class="settings-section" id="user-form-section">
+            <h3 id="user-form-title">Add User</h3>
+            <div class="form-row">
+              <div class="form-group required">
+                <label for="uf-username">Username</label>
+                <input type="text" id="uf-username" autocapitalize="none">
+              </div>
+              <div class="form-group">
+                <label for="uf-email">Email <span class="field-hint">(for password reset)</span></label>
+                <input type="email" id="uf-email" autocomplete="email">
+              </div>
+              <div class="form-group required">
+                <label for="uf-password">Password <span class="field-hint" id="uf-password-hint">(min 10 chars, include a digit or symbol)</span></label>
+                <input type="password" id="uf-password" autocomplete="new-password">
+              </div>
+              <div class="form-group required">
+                <label for="uf-role">Role</label>
+                <select id="uf-role">
+                  <option value="viewer">Viewer</option>
+                  <option value="editor">Editor</option>
+                  <option value="admin">Admin</option>
+                </select>
+              </div>
+            </div>
+            <div class="form-group" id="uf-accounts-group">
+              <label>Account Access <span class="field-hint">(admins see all — no selection needed)</span></label>
+              <div id="uf-accounts-checkboxes" class="account-checkboxes"></div>
+            </div>
+            <div id="uf-oidc-group" class="uf-oidc-section" hidden>
+              <h4>Single Sign-On Identity</h4>
+              <div class="form-row">
+                <div class="form-group">
+                  <label for="uf-oidc-sub">OIDC Subject <span class="field-hint">(sub claim from provider)</span></label>
+                  <input type="text" id="uf-oidc-sub" autocomplete="off">
+                </div>
+                <div class="form-group">
+                  <label for="uf-oidc-issuer">OIDC Issuer <span class="field-hint">(provider URL)</span></label>
+                  <input type="text" id="uf-oidc-issuer" autocomplete="off">
+                </div>
+              </div>
+            </div>
+            <div id="user-form-error" class="wizard-error" hidden></div>
+            <div style="display:flex;gap:8px;margin-top:12px">
+              <button id="btn-save-user" class="btn-primary">Add User</button>
+              <button id="btn-cancel-user-edit" class="btn-ghost" hidden>Cancel</button>
+            </div>
+          </div>
+        </div>
+
+        <!-- SMTP panel (admin only) -->
+        <div id="settings-panel-smtp" class="settings-panel" hidden>
+          <h2>Email Settings</h2>
+          <p class="settings-desc">Configure SMTP for password reset emails.</p>
+          <div class="settings-section" id="smtp-settings-section">
+            <div class="form-row">
+              <div class="form-group">
+                <label for="smtp-host">SMTP Host</label>
+                <input type="text" id="smtp-host" placeholder="smtp.example.com">
+              </div>
+              <div class="form-group" style="max-width:100px">
+                <label for="smtp-port">Port</label>
+                <input type="number" id="smtp-port" value="587" min="1" max="65535">
+              </div>
+              <div class="form-group" style="max-width:160px">
+                <label for="smtp-secure">Encryption</label>
+                <select id="smtp-secure">
+                  <option value="0">STARTTLS (587)</option>
+                  <option value="1">SSL/TLS (465)</option>
+                </select>
+              </div>
+            </div>
+            <div class="form-row">
+              <div class="form-group">
+                <label for="smtp-user">Username</label>
+                <input type="text" id="smtp-user" autocomplete="off">
+              </div>
+              <div class="form-group">
+                <label for="smtp-pass">Password <span class="field-hint" id="smtp-pass-hint"></span></label>
+                <input type="password" id="smtp-pass" autocomplete="new-password">
+              </div>
+              <div class="form-group">
+                <label for="smtp-from">From Address</label>
+                <input type="email" id="smtp-from" placeholder="ezcheck@example.com">
+              </div>
+            </div>
+            <div id="smtp-error" class="wizard-error" hidden></div>
+            <div id="smtp-success" class="import-result" hidden></div>
+            <button id="btn-save-smtp" class="btn-secondary" style="margin-top:12px">Save Email Settings</button>
+          </div>
+        </div>
+
+        <!-- Password panel (all users) -->
+        <div id="settings-panel-password" class="settings-panel" hidden>
+          <h2>Change Password</h2>
+          <p class="settings-desc">Update your login password.</p>
+          <div class="settings-section">
+            <div class="form-row">
+              <div class="form-group">
+                <label for="cp-current">Current Password</label>
+                <input type="password" id="cp-current" autocomplete="current-password">
+              </div>
+              <div class="form-group">
+                <label for="cp-new">New Password <span class="field-hint">(min 10 chars, include a digit or symbol)</span></label>
+                <input type="password" id="cp-new" autocomplete="new-password">
+              </div>
+              <div class="form-group">
+                <label for="cp-confirm">Confirm New</label>
+                <input type="password" id="cp-confirm" autocomplete="new-password">
+              </div>
+            </div>
+            <div id="cp-error" class="wizard-error" hidden></div>
+            <div id="cp-success" class="import-result" hidden>Password changed.</div>
+            <button id="btn-change-password" class="btn-secondary" style="margin-top:12px">Change Password</button>
+          </div>
+        </div>
+
+        <!-- SSO panel (all users, shown when OIDC enabled) -->
+        <div id="settings-panel-sso" class="settings-panel" hidden>
+          <h2>Single Sign-On</h2>
+          <p class="settings-desc">Link your account to an external identity provider.</p>
+          <div class="settings-section" id="oidc-link-section">
+            <p id="oidc-link-status" class="settings-desc" style="margin-bottom:12px"></p>
+            <a id="btn-oidc-link" href="/api/auth/oidc/link" class="btn-secondary" style="display:inline-block;text-decoration:none">Link My Account</a>
+            <button id="btn-oidc-unlink" class="btn-ghost" style="margin-left:8px" hidden>Unlink</button>
+          </div>
+        </div>
+
+      </main>
+    </div>
+  </div>
+
+  <div id="main-app">
   <header>
     <div class="header-left">
       <span class="header-brand" id="company-name">ezcheck</span>
       <select id="account-switcher" class="account-switcher" title="Switch account"></select>
       <button id="btn-account-settings" class="btn-header-icon" title="Account settings" data-admin-only>⚙</button>
+      <button id="btn-layout-editor" class="btn-header-icon" title="Edit check layout" data-editor-only>⊞</button>
       <button id="btn-add-account" class="btn-header-icon" title="Add checking account" data-admin-only>+</button>
     </div>
     <div class="header-right">
       <span class="header-info">Next check: <strong id="current-check-no">—</strong><button id="btn-set-check-no" class="btn-header-inline" title="Set next check number" data-admin-only>✎</button></span>
       <button id="btn-users" class="btn-header-icon" title="Manage users" data-admin-only hidden>👥</button>
-      <span id="header-username" class="header-username"></span>
+      <span id="header-username" class="header-username" style="cursor:pointer" title="Account settings"></span>
       <button id="btn-logout" class="btn-header-icon" title="Sign out">↩</button>
     </div>
   </header>
@@ -464,6 +638,18 @@
           </div>
         </div>
 
+        <p class="settings-section-label">Check Position</p>
+        <div class="form-group">
+          <label for="as-check-position">Print checks in</label>
+          <select id="as-check-position" name="check_position">
+            <option value="3-per-page">All 3 slots (3 per page)</option>
+            <option value="top">Top slot only</option>
+            <option value="middle">Middle slot only</option>
+            <option value="bottom">Bottom slot only</option>
+          </select>
+          <span class="field-hint">Choose which slot(s) on the page to print checks in.</span>
+        </div>
+
         <div id="acct-settings-error" class="wizard-error" hidden></div>
       </form>
     </div>
@@ -637,108 +823,73 @@
       </div>
     </div>
   </aside>
+  </div><!-- /main-app -->
 
-  <!-- User management modal (admin only) -->
-  <div id="users-overlay" class="modal-overlay"></div>
-  <div id="users-modal" class="modal modal-wide" role="dialog" aria-labelledby="users-title">
+
+  <!-- Layout Editor Modal -->
+  <div id="layout-editor-overlay" class="modal-overlay"></div>
+  <div id="layout-editor-modal" class="modal modal-layout-editor" role="dialog" aria-labelledby="layout-editor-title">
     <div class="modal-header">
-      <h2 id="users-title">Manage Users</h2>
-      <button id="btn-close-users" class="btn-icon" title="Close">×</button>
+      <h2 id="layout-editor-title">Layout Editor</h2>
+      <button id="btn-close-layout-editor" class="btn-icon" title="Close">×</button>
     </div>
-    <div class="modal-body">
-      <div id="users-list"></div>
-      <div style="margin-top:16px;border-top:1px solid var(--border);padding-top:16px">
-        <h3 style="font-size:13px;font-weight:600;margin-bottom:10px" id="user-form-title">Add User</h3>
-        <div class="form-row">
-          <div class="form-group required">
-            <label for="uf-username">Username</label>
-            <input type="text" id="uf-username" autocapitalize="none">
+    <div class="modal-body layout-editor-body">
+      <!-- Canvas with rulers -->
+      <div class="layout-canvas-area">
+        <div class="layout-ruler-corner"></div>
+        <div id="layout-ruler-top"></div>
+        <div id="layout-ruler-left"></div>
+        <div id="layout-canvas-container"><!-- SVG rendered by JS --></div>
       </div>
-          <div class="form-group">
-            <label for="uf-email">Email <span class="field-hint">(for password reset)</span></label>
-            <input type="email" id="uf-email" autocomplete="email">
+      <!-- Controls strip -->
+      <div class="layout-controls">
+        <div class="layout-coord" style="gap:6px">
+          <label for="layout-field-select" style="font-size:11px;font-weight:600;text-transform:uppercase;color:var(--text-muted)">Field</label>
+          <select id="layout-field-select" style="font-size:12px;max-width:200px"></select>
         </div>
-          <div class="form-group required">
-            <label for="uf-password">Password <span class="field-hint" id="uf-password-hint">(min 10 chars, include a digit or symbol)</span></label>
-            <input type="password" id="uf-password" autocomplete="new-password">
+        <label style="display:flex;align-items:center;gap:5px;font-size:12px;cursor:pointer;white-space:nowrap">
+          <input type="checkbox" id="layout-field-visible"> Visible
+        </label>
+        <div style="width:1px;height:24px;background:var(--border)"></div>
+        <div class="layout-coord">
+          <label for="layout-field-x">X</label>
+          <input type="number" id="layout-field-x" step="0.0625" min="0" max="8.5">
+          <span class="frac" id="layout-field-x-frac"></span>
         </div>
-          <div class="form-group required">
-            <label for="uf-role">Role</label>
-            <select id="uf-role">
-              <option value="viewer">Viewer</option>
-              <option value="editor">Editor</option>
-              <option value="admin">Admin</option>
-            </select>
+        <div class="layout-coord">
+          <label for="layout-field-y">Y</label>
+          <input type="number" id="layout-field-y" step="0.0625" min="0" max="3.5">
+          <span class="frac" id="layout-field-y-frac"></span>
+        </div>
+        <div id="layout-end-pos-group" style="display:contents" hidden>
+          <div class="layout-coord">
+            <label for="layout-field-x2">End X</label>
+            <input type="number" id="layout-field-x2" step="0.0625" min="0" max="8.5">
+            <span class="frac" id="layout-field-x2-frac"></span>
+          </div>
+          <div class="layout-coord">
+            <label for="layout-field-y2">End Y</label>
+            <input type="number" id="layout-field-y2" step="0.0625" min="0" max="3.5">
+            <span class="frac" id="layout-field-y2-frac"></span>
           </div>
         </div>
-        <div class="form-group" id="uf-accounts-group">
-          <label>Account Access <span class="field-hint">(admins see all — no selection needed)</span></label>
-          <div id="uf-accounts-checkboxes" class="account-checkboxes"></div>
-        </div>
-        <div id="user-form-error" class="wizard-error" hidden></div>
-        <div style="display:flex;gap:8px;margin-top:8px">
-          <button id="btn-save-user" class="btn-primary">Add User</button>
-          <button id="btn-cancel-user-edit" class="btn-ghost" hidden>Cancel</button>
+        <div style="width:1px;height:24px;background:var(--border)"></div>
+        <!-- Nudge cross -->
+        <div style="display:flex;flex-direction:column;align-items:center;gap:2px">
+          <div style="font-size:10px;text-transform:uppercase;color:var(--text-muted);letter-spacing:.04em">¹⁄₁₆"</div>
+          <div style="display:grid;grid-template-columns:repeat(3,22px);grid-template-rows:repeat(3,22px);gap:2px">
+            <span></span><button id="nudge-up"    class="btn-sm btn-secondary" style="padding:0;display:flex;align-items:center;justify-content:center">↑</button><span></span>
+            <button id="nudge-left"  class="btn-sm btn-secondary" style="padding:0;display:flex;align-items:center;justify-content:center">←</button>
+            <span></span>
+            <button id="nudge-right" class="btn-sm btn-secondary" style="padding:0;display:flex;align-items:center;justify-content:center">→</button>
+            <span></span><button id="nudge-down"  class="btn-sm btn-secondary" style="padding:0;display:flex;align-items:center;justify-content:center">↓</button><span></span>
           </div>
         </div>
-      <!-- SMTP settings (admin only) -->
-      <div id="smtp-settings-section" style="margin-top:16px;border-top:1px solid var(--border);padding-top:16px">
-        <h3 style="font-size:13px;font-weight:600;margin-bottom:10px">Email Settings (SMTP)</h3>
-        <div class="form-row">
-          <div class="form-group">
-            <label for="smtp-host">SMTP Host</label>
-            <input type="text" id="smtp-host" placeholder="smtp.example.com">
+        <div id="layout-save-status" style="font-size:11px;color:var(--text-muted);min-width:56px"></div>
+        <div style="margin-left:auto;display:flex;gap:8px;align-items:center">
+          <button id="btn-layout-preview" class="btn-secondary btn-sm">⎙ Preview PDF</button>
+          <button id="btn-layout-reset" class="btn-secondary btn-sm" data-admin-only>↺ Reset to Default</button>
         </div>
-          <div class="form-group" style="max-width:90px">
-            <label for="smtp-port">Port</label>
-            <input type="number" id="smtp-port" value="587" min="1" max="65535">
-          </div>
-          <div class="form-group" style="max-width:140px">
-            <label for="smtp-secure">Encryption</label>
-            <select id="smtp-secure">
-              <option value="0">STARTTLS (587)</option>
-              <option value="1">SSL/TLS (465)</option>
-            </select>
-          </div>
-        </div>
-        <div class="form-row">
-          <div class="form-group">
-            <label for="smtp-user">Username</label>
-            <input type="text" id="smtp-user" autocomplete="off">
-          </div>
-          <div class="form-group">
-            <label for="smtp-pass">Password <span class="field-hint" id="smtp-pass-hint"></span></label>
-            <input type="password" id="smtp-pass" autocomplete="new-password">
-          </div>
-          <div class="form-group">
-            <label for="smtp-from">From Address</label>
-            <input type="email" id="smtp-from" placeholder="ezcheck@example.com">
-          </div>
-        </div>
-        <div id="smtp-error" class="wizard-error" hidden></div>
-        <div id="smtp-success" class="import-result" hidden></div>
-        <button id="btn-save-smtp" class="btn-secondary" style="margin-top:8px">Save Email Settings</button>
-      </div>
-      <!-- Change own password -->
-      <div style="margin-top:16px;border-top:1px solid var(--border);padding-top:16px">
-        <h3 style="font-size:13px;font-weight:600;margin-bottom:10px">Change My Password</h3>
-        <div class="form-row">
-          <div class="form-group">
-            <label for="cp-current">Current Password</label>
-            <input type="password" id="cp-current" autocomplete="current-password">
-          </div>
-          <div class="form-group">
-            <label for="cp-new">New Password <span class="field-hint">(min 10 chars, include a digit or symbol)</span></label>
-            <input type="password" id="cp-new" autocomplete="new-password">
-          </div>
-          <div class="form-group">
-            <label for="cp-confirm">Confirm New</label>
-            <input type="password" id="cp-confirm" autocomplete="new-password">
-          </div>
-        </div>
-        <div id="cp-error" class="wizard-error" hidden></div>
-        <div id="cp-success" class="import-result" hidden>Password changed.</div>
-        <button id="btn-change-password" class="btn-secondary" style="margin-top:8px">Change Password</button>
       </div>
     </div>
   </div>

public/js/app.js

@@ -52,12 +52,32 @@ async function checkAuth() {
     showLoginOverlay();
     return false;
   }
+
+  // OIDC callback error/success detection
+  if (location.hash.startsWith('#oidc-error=')) {
+    const msg = decodeURIComponent(location.hash.slice('#oidc-error='.length));
+    history.replaceState(null, '', location.pathname);
+    showLoginSection('login-form-section');
+    const errEl = document.getElementById('login-error');
+    errEl.textContent = msg;
+    errEl.hidden = false;
+    showLoginOverlay();
+    return false;
+  }
+  if (location.hash === '#oidc-linked') {
+    // After OIDC link callback, navigate to SSO settings panel
+    location.hash = '#settings/sso';
+    // Fall through to normal auth check — user is still logged in
+  }
+
   // Is there already a session?
   const res = await fetch('/api/auth/me');
   if (res.ok) {
     state.user = await res.json();
     hideLoginOverlay();
     applyRoleUI();
+    // Route to settings page if hash says so
+    if (location.hash.startsWith('#settings')) handleHashRoute();
     return true;
   }
   // No session — check if this is first-run (no users at all)
@@ -68,10 +88,27 @@ async function checkAuth() {
   } else {
     showLoginSection('login-form-section');
   }
+  // Show SSO button if OIDC is enabled
+  loadOidcLoginButton();
   showLoginOverlay();
   return false;
 }
 
+async function loadOidcLoginButton() {
+  try {
+    const res = await fetch('/api/auth/oidc/config');
+    if (!res.ok) return;
+    const cfg = await res.json();
+    const section = document.getElementById('oidc-login-section');
+    if (cfg.enabled) {
+      document.getElementById('btn-oidc-login-label').textContent = cfg.button_label || 'Sign in with SSO';
+      section.hidden = false;
+    } else {
+      section.hidden = true;
+    }
+  } catch { /* ignore */ }
+}
+
 async function submitLogin() {
   const username = document.getElementById('login-username').value.trim();
   const password = document.getElementById('login-password').value;
@@ -131,6 +168,9 @@ async function logout() {
   document.getElementById('login-error').hidden = true;
   document.getElementById('login-setup-section').hidden = true;
   document.getElementById('login-form-section').hidden  = false;
+  // Ensure settings page is hidden and main app restored
+  document.getElementById('settings-page').hidden = true;
+  document.getElementById('main-app').hidden = false;
   showLoginOverlay();
 }
 
@@ -142,8 +182,9 @@ function applyRoleUI() {
   const isEditor = state.accountRole === 'editor' || (!state.accountRole && (role === 'admin' || role === 'editor'));
 
   document.getElementById('header-username').textContent = state.user ? state.user.username : '';
+  document.getElementById('settings-username').textContent = state.user ? state.user.username : '';
 
-  // Admin-only elements
+  // Admin-only elements (main app + settings sidebar)
   document.querySelectorAll('[data-admin-only]').forEach(el => { el.hidden = !isAdmin; });
 
   // Editor+ elements (hide for viewers)
@@ -157,19 +198,62 @@ function applyRoleUI() {
 
 let usersState = { users: [], editingId: null };
 
-function openUsersModal() {
-  document.getElementById('user-form-error').hidden = true;
-  document.getElementById('users-overlay').classList.add('open');
-  document.getElementById('users-modal').classList.add('open');
-  loadUsers();
-  renderUfAccountCheckboxes();
-  if (state.user && state.user.role === 'admin') loadSmtpSettings();
+// ── Settings page navigation ────────────────────────────────────────────────
+
+function navigateToSettings(tab) {
+  const isAdmin = state.user && state.user.role === 'admin';
+  const defaultTab = isAdmin ? 'users' : 'password';
+  const resolved = tab || defaultTab;
+
+  // Guard non-admin from admin tabs
+  if (!isAdmin && (resolved === 'users' || resolved === 'smtp')) {
+    location.hash = '#settings/password';
+    return;
   }
 
-function closeUsersModal() {
-  document.getElementById('users-overlay').classList.remove('open');
-  document.getElementById('users-modal').classList.remove('open');
-  cancelUserEdit();
+  document.getElementById('main-app').hidden = true;
+  const sp = document.getElementById('settings-page');
+  sp.hidden = false;
+  document.getElementById('settings-username').textContent = state.user ? state.user.username : '';
+
+  // Check OIDC status to show/hide SSO tab
+  loadOidcLinkStatus();
+
+  activateSettingsTab(resolved);
+}
+
+function activateSettingsTab(tab) {
+  // Hide all panels, show the target
+  document.querySelectorAll('.settings-panel').forEach(p => { p.hidden = true; });
+  const panel = document.getElementById('settings-panel-' + tab);
+  if (panel) panel.hidden = false;
+
+  // Update sidebar active state
+  document.querySelectorAll('.settings-nav-item').forEach(a => {
+    a.classList.toggle('active', a.dataset.settingsTab === tab);
+  });
+
+  // Load data for the activated tab
+  if (tab === 'users') { loadUsers(); renderUfAccountCheckboxes(); }
+  if (tab === 'smtp')  { loadSmtpSettings(); }
+  if (tab === 'sso')   { loadOidcLinkStatus(); }
+}
+
+function showMainApp() {
+  document.getElementById('settings-page').hidden = true;
+  document.getElementById('main-app').hidden = false;
+}
+
+function handleHashRoute() {
+  const hash = location.hash;
+  if (hash.startsWith('#settings/')) {
+    const tab = hash.split('/')[1];
+    navigateToSettings(tab);
+  } else if (hash.startsWith('#settings')) {
+    navigateToSettings();
+  } else {
+    showMainApp();
+  }
 }
 
 async function loadUsers() {
@@ -204,8 +288,9 @@ function renderUsersList() {
             const name = escHtml(a ? (a.company1 || `Account ${a.account_id}`) : `#${ua.account_id}`);
             return `${name} <span style="font-size:10px;color:${ua.role === 'editor' ? '#16a34a' : '#6b7280'};font-weight:600;text-transform:uppercase">${ua.role}</span>`;
           }).join(', ') : '<em style="color:var(--text-muted)">None</em>');
+      const oidcTag = u.oidc_sub ? ' <span style="font-size:10px;color:#2563eb;font-weight:600" title="OIDC linked">SSO</span>' : '';
       return `<tr>
-        <td><strong>${escHtml(u.username)}</strong>${isSelf ? ' <em style="color:var(--text-muted)">(you)</em>' : ''}</td>
+        <td><strong>${escHtml(u.username)}</strong>${isSelf ? ' <em style="color:var(--text-muted)">(you)</em>' : ''}${oidcTag}</td>
         <td>${roleBadge(u.role)}</td>
         <td style="font-size:12px">${accountsLabel}</td>
         <td style="white-space:nowrap">
@@ -231,8 +316,8 @@ function renderUfAccountCheckboxes() {
     const acctRole = assignment ? assignment.role : 'viewer';
     return `<label class="account-checkbox-label">
       <input type="checkbox" name="uf-account" value="${a.id}"${checked ? ' checked' : ''}>
-      ${escHtml(a.company1 || a.bank_name || `Account ${a.id}`)}
-      <select name="uf-account-role" data-account-id="${a.id}" style="margin-left:6px;font-size:12px">
+      <span>${escHtml(a.company1 || a.bank_name || `Account ${a.id}`)}</span>
+      <select name="uf-account-role" data-account-id="${a.id}" style="font-size:12px">
         <option value="editor"${acctRole === 'editor' ? ' selected' : ''}>Editor</option>
         <option value="viewer"${acctRole === 'viewer' ? ' selected' : ''}>Viewer</option>
       </select>
@@ -253,6 +338,10 @@ function startUserEdit(userId) {
   document.getElementById('btn-save-user').textContent   = 'Save Changes';
   document.getElementById('btn-cancel-user-edit').hidden = false;
   document.getElementById('user-form-error').hidden = true;
+  // OIDC fields
+  document.getElementById('uf-oidc-sub').value    = u.oidc_sub || '';
+  document.getElementById('uf-oidc-issuer').value = u.oidc_issuer || '';
+  document.getElementById('uf-oidc-group').hidden = false;
   renderUfAccountCheckboxes();
   document.getElementById('uf-username').scrollIntoView({ behavior: 'smooth', block: 'nearest' });
 }
@@ -268,6 +357,10 @@ function cancelUserEdit() {
   document.getElementById('btn-save-user').textContent     = 'Add User';
   document.getElementById('btn-cancel-user-edit').hidden   = true;
   document.getElementById('user-form-error').hidden = true;
+  // OIDC fields
+  document.getElementById('uf-oidc-sub').value    = '';
+  document.getElementById('uf-oidc-issuer').value = '';
+  document.getElementById('uf-oidc-group').hidden = true;
   renderUfAccountCheckboxes();
 }
 
@@ -296,6 +389,8 @@ async function saveUser() {
     const body = { username, email, role, accounts };
     if (password) body.password = password;
     if (usersState.editingId) {
+      body.oidc_sub    = document.getElementById('uf-oidc-sub').value.trim();
+      body.oidc_issuer = document.getElementById('uf-oidc-issuer').value.trim();
       await apiFetch('PUT', `/api/users/${usersState.editingId}`, body);
     } else {
       await apiFetch('POST', '/api/users', body);
@@ -685,6 +780,18 @@ async function deleteCheck(id) {
   }
 }
 
+// Firefox on iOS blocks window.open(blob:) in a new tab; use a temporary <a download> instead.
+function openPdfBlob(blob, filename) {
+  const url = URL.createObjectURL(blob);
+  const a = document.createElement('a');
+  a.href = url;
+  a.download = filename;
+  document.body.appendChild(a);
+  a.click();
+  document.body.removeChild(a);
+  setTimeout(() => URL.revokeObjectURL(url), 10000);
+}
+
 async function generatePdf() {
   const ids = [...state.selected];
   if (ids.length === 0) return;
@@ -706,7 +813,7 @@ async function generatePdf() {
       throw new Error(err.error || res.statusText);
     }
     const blob = await res.blob();
-    window.open(URL.createObjectURL(blob), '_blank');
+    openPdfBlob(blob, 'checks.pdf');
     await loadChecks(); // refresh to show printed status
   } catch (err) {
     countSpan.textContent = savedCount;
@@ -909,6 +1016,7 @@ function openAccountSettings() {
   f.elements.offset_up.value    = a.offset_up    || 0;
   f.elements.offset_down.value  = a.offset_down  || 0;
   document.getElementById('as-second-sig').checked = !!a.second_signature;
+  document.getElementById('as-check-position').value = a.check_position || '3-per-page';
 
   document.getElementById('as-logo').value = '';
   document.getElementById('as-logo-preview').hidden = true;
@@ -947,6 +1055,7 @@ async function saveAccountSettings() {
     offset_up:      parseFloat(f.elements.offset_up.value)    || 0,
     offset_down:      parseFloat(f.elements.offset_down.value)  || 0,
     second_signature: document.getElementById('as-second-sig').checked ? 1 : 0,
+    check_position:   document.getElementById('as-check-position').value,
     logo_data:        acctSettings.logoData || null,
   };
 
@@ -1333,14 +1442,18 @@ async function openDepositPanel(id = null) {
       document.getElementById('dep-coin').value     = dep.coin      || '';
       document.getElementById('dep-cashback').value = dep.cash_back || '';
       depState.items = (dep.items || []).map(it => ({ ...it }));
+      while (depState.items.length < 30) depState.items.push(newDepItem());
     } catch (err) {
       alert('Error loading deposit: ' + err.message);
       return;
     }
   } else {
-    depState.items = [newDepItem()];
+    depState.items = [];
   }
 
+  // Always start with at least 30 slots (one full deposit slip page)
+  while (depState.items.length < 30) depState.items.push(newDepItem());
+
   renderDepItems();
   recalcDepTotals();
 
@@ -1366,6 +1479,13 @@ function newDepItem() {
 }
 
 function renderDepItems() {
+  const addBtn = document.getElementById('btn-add-dep-item');
+  if (addBtn) {
+    const count = depState.items.length;
+    addBtn.hidden   = count >= 60;  // hide once back page rows are added
+    addBtn.disabled = count >= 60;
+    addBtn.textContent = 'Add Back Page Rows';
+  }
   const tbody = document.getElementById('dep-items-tbody');
   tbody.innerHTML = depState.items.map((item, i) => `
     <tr data-idx="${i}">
@@ -1388,6 +1508,8 @@ function renderDepItems() {
   tbody.querySelectorAll('.dep-item-remove').forEach(btn => {
     btn.addEventListener('click', () => {
       depState.items.splice(parseInt(btn.dataset.idx, 10), 1);
+      // Maintain 30-slot minimum (one full slip page)
+      while (depState.items.length < 30) depState.items.push(newDepItem());
       renderDepItems();
       recalcDepTotals();
     });
@@ -1498,7 +1620,7 @@ async function generateDepositPdf(type) {
       throw new Error(err.error || res.statusText);
     }
     const blob = await res.blob();
-    window.open(URL.createObjectURL(blob), '_blank');
+    openPdfBlob(blob, type === 'slip' ? 'deposit-slip.pdf' : 'deposit-report.pdf');
     if (type === 'slip') await loadDeposits();
   } catch (err) {
     alert('PDF error: ' + err.message);
@@ -1603,6 +1725,45 @@ async function saveSmtpSettings() {
   }
 }
 
+// ── OIDC self-service linking ────────────────────────────────────────────────
+
+async function loadOidcLinkStatus() {
+  try {
+    const cfg = await fetch('/api/auth/oidc/config').then(r => r.json());
+    const ssoNavItem = document.querySelector('[data-settings-tab="sso"]');
+    if (!cfg.enabled) {
+      if (ssoNavItem) ssoNavItem.hidden = true;
+      return;
+    }
+    if (ssoNavItem) ssoNavItem.hidden = false;
+
+    const me = await apiFetch('GET', '/api/auth/me');
+    const statusEl  = document.getElementById('oidc-link-status');
+    const linkBtn   = document.getElementById('btn-oidc-link');
+    const unlinkBtn = document.getElementById('btn-oidc-unlink');
+
+    if (me.oidc_linked) {
+      statusEl.textContent = 'Your account is linked to SSO.';
+      linkBtn.hidden  = true;
+      unlinkBtn.hidden = false;
+    } else {
+      statusEl.textContent = 'Link your account to sign in with SSO.';
+      linkBtn.hidden  = false;
+      unlinkBtn.hidden = true;
+    }
+  } catch (_) {}
+}
+
+async function unlinkOidc() {
+  if (!confirm('Unlink your SSO identity? You will need to use your password to sign in.')) return;
+  try {
+    await apiFetch('POST', '/api/auth/oidc/unlink');
+    await loadOidcLinkStatus();
+  } catch (err) {
+    alert(err.message);
+  }
+}
+
 // ── Initialization ───────────────────────────────────────────────────────────
 
 async function init() {
@@ -1752,7 +1913,7 @@ async function init() {
   document.getElementById('dep-panel-overlay').addEventListener('click', closeDepositPanel);
   document.getElementById('btn-save-deposit').addEventListener('click', saveDeposit);
   document.getElementById('btn-add-dep-item').addEventListener('click', () => {
-    depState.items.push(newDepItem());
+    while (depState.items.length < 60) depState.items.push(newDepItem());
     renderDepItems();
   });
   document.getElementById('btn-dep-slip').addEventListener('click',   () => generateDepositPdf('slip'));
@@ -1794,10 +1955,27 @@ async function init() {
   document.getElementById('btn-reset-submit').addEventListener('click', submitResetPassword);
   document.getElementById('reset-password2').addEventListener('keydown', e => { if (e.key === 'Enter') submitResetPassword(); });
 
-  // User management
-  document.getElementById('btn-users').addEventListener('click', openUsersModal);
-  document.getElementById('btn-close-users').addEventListener('click', closeUsersModal);
-  document.getElementById('users-overlay').addEventListener('click', closeUsersModal);
+  // User management / settings page
+  document.getElementById('btn-users').addEventListener('click', () => { location.hash = '#settings/users'; });
+  document.getElementById('header-username').addEventListener('click', () => {
+    const isAdmin = state.user && state.user.role === 'admin';
+    location.hash = isAdmin ? '#settings/users' : '#settings/password';
+  });
+  document.getElementById('settings-back-link').addEventListener('click', e => {
+    e.preventDefault();
+    location.hash = '';
+  });
+  document.getElementById('btn-settings-logout').addEventListener('click', () => {
+    location.hash = '';
+    logout();
+  });
+  // Sidebar tab navigation
+  document.querySelectorAll('.settings-nav-item').forEach(a => {
+    a.addEventListener('click', e => { e.preventDefault(); location.hash = a.getAttribute('href'); });
+  });
+  window.addEventListener('hashchange', () => {
+    if (state.user) handleHashRoute();
+  });
   document.getElementById('users-list').addEventListener('click', e => {
     const editBtn   = e.target.closest('.user-btn-edit');
     const deleteBtn = e.target.closest('.user-btn-delete');
@@ -1809,13 +1987,509 @@ async function init() {
   document.getElementById('uf-role').addEventListener('change', renderUfAccountCheckboxes);
   document.getElementById('btn-change-password').addEventListener('click', changeOwnPassword);
   document.getElementById('btn-save-smtp').addEventListener('click', saveSmtpSettings);
+  document.getElementById('btn-oidc-unlink').addEventListener('click', unlinkOidc);
 
   // Add checking account
   document.getElementById('btn-add-account').addEventListener('click', openWizard);
 
+  // Layout editor
+  document.getElementById('btn-layout-editor').addEventListener('click', openLayoutEditor);
+  document.getElementById('btn-close-layout-editor').addEventListener('click', closeLayoutEditor);
+  document.getElementById('layout-editor-overlay').addEventListener('click', closeLayoutEditor);
+  document.getElementById('layout-field-select').addEventListener('change', e => selectLayoutField(parseInt(e.target.value, 10)));
+  document.getElementById('layout-field-x').addEventListener('input', onLayoutSidebarChange);
+  document.getElementById('layout-field-y').addEventListener('input', onLayoutSidebarChange);
+  document.getElementById('layout-field-x2').addEventListener('input', onLayoutSidebarChange);
+  document.getElementById('layout-field-y2').addEventListener('input', onLayoutSidebarChange);
+  document.getElementById('layout-field-visible').addEventListener('change', onLayoutSidebarChange);
+  document.getElementById('nudge-up').addEventListener('click',    () => nudgeLayoutField( 0, -1));
+  document.getElementById('nudge-down').addEventListener('click',  () => nudgeLayoutField( 0,  1));
+  document.getElementById('nudge-left').addEventListener('click',  () => nudgeLayoutField(-1,  0));
+  document.getElementById('nudge-right').addEventListener('click', () => nudgeLayoutField( 1,  0));
+  document.getElementById('btn-layout-reset').addEventListener('click', resetLayoutToDefault);
+  document.getElementById('btn-layout-preview').addEventListener('click', previewLayoutPdf);
+
   // Initial auth check → loads app if already signed in
   const authed = await checkAuth();
   if (authed) await loadAccounts();
 }
 
+// ── Layout Editor ─────────────────────────────────────────────────────────────
+
+let layoutState = { fields: [], selectedId: null, scale: 80 };
+let layoutDrag = null;
+let layoutSaveTimer = null;
+
+const FIELD_LABELS = {
+  'Company Name':         'Account Name (line 1)',
+  'Company Name2':        'Account Address (line 2)',
+  'Company Name3':        'Account City/State (line 3)',
+  'Company Name4':        'Account Phone/Web (line 4)',
+  'Check Number':         'Check Number',
+  'Date Label':           'Date Label',
+  'Date':                 'Date',
+  'Pay To Label':         '"Pay To" Label',
+  'Payee Name':           'Payee Name',
+  'Dollar Sign':          'Dollar Sign ($)',
+  'Amount':               'Amount (numeric)',
+  'Text Amount':          'Amount (written)',
+  'Dollars Label':        '"Dollars" Label',
+  'Bank Information':     'Bank Information',
+  'Bank Transit Code':    'Transit Code',
+  'Payee Address':        'Payee Address',
+  'Memo Label':           'Memo Label',
+  'Memo':                 'Memo',
+  'Auth Signature Label': '"Authorized Signature" Label',
+  'Payee Line':           'Line: Payee',
+  'Amount Box Top':       'Line: Amount Box (top)',
+  'Amount Box Left':      'Line: Amount Box (left)',
+  'Amount Box Bottom':    'Line: Amount Box (bottom)',
+  'Text Amount Line':     'Line: Written Amount',
+  'Memo Line':            'Line: Memo',
+  'Signature Line':       'Line: Signature',
+};
+const FIELD_COLORS = { Regular: '#2563eb', Text: '#16a34a', Line: '#b45309', Graph: '#7c3aed' };
+
+function fieldLabel(f)        { return FIELD_LABELS[f.field_name] || f.field_name; }
+function round16(v)           { return Math.round(v * 16) / 16; }
+function clampIn(v, lo, hi)   { return Math.max(lo, Math.min(hi, v)); }
+
+const FRAC_MAP = [
+  [0,''], [1/16,'¹⁄₁₆'], [1/8,'⅛'], [3/16,'³⁄₁₆'],
+  [1/4,'¼'], [5/16,'⁵⁄₁₆'], [3/8,'⅜'], [7/16,'⁷⁄₁₆'],
+  [1/2,'½'], [9/16,'⁹⁄₁₆'], [5/8,'⅝'], [11/16,'¹¹⁄₁₆'],
+  [3/4,'¾'], [13/16,'¹³⁄₁₆'], [7/8,'⅞'], [15/16,'¹⁵⁄₁₆'],
+];
+function toFracStr(val) {
+  const w = Math.floor(val);
+  const dec = val - w;
+  const fr = FRAC_MAP.reduce((a, b) => Math.abs(b[0] - dec) < Math.abs(a[0] - dec) ? b : a);
+  const parts = [];
+  if (w) parts.push(w);
+  if (fr[1]) parts.push(fr[1]);
+  return (parts.length ? parts.join(' ') : '0') + '"';
+}
+function setFracEl(id, val) {
+  const el = document.getElementById(id);
+  if (el) el.textContent = toFracStr(val || 0);
+}
+
+function openLayoutEditor() {
+  if (!state.activeAccountId) return;
+  document.getElementById('layout-editor-overlay').classList.add('open');
+  document.getElementById('layout-editor-modal').classList.add('open');
+  loadLayoutFields();
+}
+
+function closeLayoutEditor() {
+  document.getElementById('layout-editor-overlay').classList.remove('open');
+  document.getElementById('layout-editor-modal').classList.remove('open');
+  layoutState = { fields: [], selectedId: null, scale: 80 };
+  clearTimeout(layoutSaveTimer);
+}
+
+async function loadLayoutFields() {
+  try {
+    layoutState.fields = await apiFetch('GET', `/api/layout/${state.activeAccountId}`);
+    populateLayoutDropdown();
+    requestAnimationFrame(() => {
+      renderLayoutCanvas();
+      if (layoutState.fields.length > 0) selectLayoutField(layoutState.fields[0].id);
+    });
+  } catch (err) {
+    console.error('Failed to load layout fields:', err);
+  }
+}
+
+function populateLayoutDropdown() {
+  const sel = document.getElementById('layout-field-select');
+  sel.innerHTML = layoutState.fields.map(f =>
+    `<option value="${f.id}">${escHtml(fieldLabel(f))}</option>`
+  ).join('');
+}
+
+// Printing safe zone for user-adjustable fields (inches). MICR is exempt.
+const SAFE_LEFT   = 11 / 64;
+const SAFE_RIGHT  = 8.5 - 11 / 64;
+const SAFE_TOP    = 13 / 64;
+const SAFE_BOTTOM = 3.5 - 0.5;
+
+const SVG_NS = 'http://www.w3.org/2000/svg';
+function svgEl(tag, attrs, text) {
+  const el = document.createElementNS(SVG_NS, tag);
+  for (const [k, v] of Object.entries(attrs)) el.setAttribute(k, v);
+  if (text != null) el.textContent = text;
+  return el;
+}
+
+function renderLayoutCanvas() {
+  const container = document.getElementById('layout-canvas-container');
+  const W = container.offsetWidth;
+  if (W <= 0) return;
+  const SCALE = W / 8.5;
+  layoutState.scale = SCALE;
+  const H = 3.5 * SCALE;
+
+  container.innerHTML = '';
+  const svg = svgEl('svg', { width: W, height: H, style: 'display:block;user-select:none' });
+
+  // White check background
+  svg.appendChild(svgEl('rect', { x:0, y:0, width:W, height:H, fill:'#fff', stroke:'#bbb', 'stroke-width':1 }));
+
+  // Grid at 1/8" increments (darker every 1/4", darkest on whole inches)
+  for (let n8 = 1; n8 < Math.ceil(8.5 * 8); n8++) {
+    const x = (n8 / 8) * SCALE;
+    if (x >= W) break;
+    const isInch = n8 % 8 === 0;
+    const isQtr = n8 % 2 === 0;
+    const stroke = isInch ? '#d0d7de' : isQtr ? '#e4e8ed' : '#f0f2f5';
+    svg.appendChild(svgEl('line', { x1:x, y1:0, x2:x, y2:H, stroke, 'stroke-width':1 }));
+  }
+  for (let n8 = 1; n8 < Math.ceil(3.5 * 8); n8++) {
+    const y = (n8 / 8) * SCALE;
+    if (y >= H) break;
+    const isInch = n8 % 8 === 0;
+    const isQtr = n8 % 2 === 0;
+    const stroke = isInch ? '#d0d7de' : isQtr ? '#e4e8ed' : '#f0f2f5';
+    svg.appendChild(svgEl('line', { x1:0, y1:y, x2:W, y2:y, stroke, 'stroke-width':1 }));
+  }
+
+  // MICR reference line
+  const micrY = (3.5 - 0.267) * SCALE;
+  svg.appendChild(svgEl('line', { x1:0, y1:micrY, x2:W, y2:micrY, stroke:'#ccc', 'stroke-width':1, 'stroke-dasharray':'4,4' }));
+  svg.appendChild(svgEl('text', { x:4, y:micrY - 3, 'font-size':9, fill:'#bbb', 'font-family':'sans-serif' }, 'MICR'));
+
+  // Safe zone outline for user-adjustable fields
+  svg.appendChild(svgEl('rect', {
+    x: SAFE_LEFT * SCALE,
+    y: SAFE_TOP * SCALE,
+    width: (SAFE_RIGHT - SAFE_LEFT) * SCALE,
+    height: (SAFE_BOTTOM - SAFE_TOP) * SCALE,
+    fill: 'none',
+    stroke: '#60a5fa',
+    'stroke-width': 1,
+    'stroke-dasharray': '3,3',
+  }));
+
+  for (const f of layoutState.fields) {
+    const g = createFieldSvgElement(f, SCALE, layoutState.selectedId === f.id);
+    svg.appendChild(g);
+    attachFieldEvents(g, f);
+  }
+
+  container.appendChild(svg);
+  renderRulers(W, H, SCALE);
+}
+
+function renderRulers(W, H, scale) {
+  const RULER = 24;
+  const topEl  = document.getElementById('layout-ruler-top');
+  const leftEl = document.getElementById('layout-ruler-left');
+  if (!topEl || !leftEl) return;
+
+  // ── Horizontal ruler (top) ──────────────────────────────────────
+  const topSvg = svgEl('svg', { width: W, height: RULER, style: 'display:block' });
+  topSvg.appendChild(svgEl('rect', { x:0, y:0, width:W, height:RULER, fill:'var(--surface)' }));
+
+  for (let n8 = 0; n8 <= Math.ceil(8.5 * 8); n8++) {
+    const inches = n8 / 8;
+    if (inches > 8.5) break;
+    const x = inches * scale;
+    const isInch = n8 % 8 === 0;
+    const isHalf = n8 % 4 === 0;
+    const isQtr  = n8 % 2 === 0;
+    const tickH  = isInch ? RULER - 2 : isHalf ? 14 : isQtr ? 9 : 5;
+    topSvg.appendChild(svgEl('line', { x1:x, y1:RULER, x2:x, y2:RULER - tickH, stroke:'#999', 'stroke-width': isInch ? 1 : 0.5 }));
+    if (isInch && inches > 0) {
+      topSvg.appendChild(svgEl('text', { x:x + 2, y:RULER - tickH - 1, 'font-size':8, fill:'#666', 'font-family':'sans-serif' }, inches + '"'));
+    }
+  }
+  topEl.innerHTML = '';
+  topEl.appendChild(topSvg);
+
+  // ── Vertical ruler (left) ───────────────────────────────────────
+  const leftSvg = svgEl('svg', { width: RULER, height: H, style: 'display:block' });
+  leftSvg.appendChild(svgEl('rect', { x:0, y:0, width:RULER, height:H, fill:'var(--surface)' }));
+
+  for (let n8 = 0; n8 <= Math.ceil(3.5 * 8); n8++) {
+    const inches = n8 / 8;
+    if (inches > 3.5) break;
+    const y = inches * scale;
+    const isInch = n8 % 8 === 0;
+    const isHalf = n8 % 4 === 0;
+    const isQtr  = n8 % 2 === 0;
+    const tickW  = isInch ? RULER - 2 : isHalf ? 14 : isQtr ? 9 : 5;
+    leftSvg.appendChild(svgEl('line', { x1:RULER, y1:y, x2:RULER - tickW, y2:y, stroke:'#999', 'stroke-width': isInch ? 1 : 0.5 }));
+    if (isInch && inches > 0) {
+      const t = svgEl('text', { 'font-size':8, fill:'#666', 'font-family':'sans-serif',
+        'text-anchor':'end', x: RULER - tickW - 2, y: y + 3 }, inches + '"');
+      leftSvg.appendChild(t);
+    }
+  }
+  leftEl.innerHTML = '';
+  leftEl.appendChild(leftSvg);
+}
+
+function getFieldDisplayValue(f) {
+  const a = state.account || {};
+  switch (f.field_name) {
+    case 'Company Name':      return a.company1 || 'Company Name';
+    case 'Company Name2':     return a.company2 || '';
+    case 'Company Name3':     return a.company3 || '';
+    case 'Company Name4':     return a.company4 || '';
+    case 'Check Number':      return '1001';
+    case 'Date':              return '01/01/2025';
+    case 'Payee Name':        return 'Sample Payee';
+    case 'Amount':            return '1,234.56';
+    case 'Text Amount':       return 'One Thousand Two Hundred Thirty Four and 56/100---';
+    case 'Bank Information':  return [a.bank_name, a.bank_info1, a.bank_info2, a.bank_info3].filter(Boolean);
+    case 'Bank Transit Code': return a.transit_code || '';
+    case 'Payee Address':     return ['123 Sample St', 'City, ST 12345'];
+    case 'Memo':              return 'Sample Memo';
+    default:
+      if (f.field_type === 'Text') return f.field_text || '';
+      return f.field_name;
+  }
+}
+
+function createFieldSvgElement(f, scale, selected) {
+  const g = svgEl('g', { 'data-field-id': f.id, style: `cursor:grab;opacity:${f.visible ? 1 : 0.35}` });
+  const x = f.x_pos * scale;
+  const y = f.y_pos * scale;
+
+  if (f.field_type === 'Line') {
+    const x1 = f.x_pos * scale, y1 = f.y_pos * scale;
+    const x2 = f.x_end_pos * scale, y2 = f.y_end_pos * scale;
+    g.appendChild(svgEl('line', { x1, y1, x2, y2, stroke:'transparent', 'stroke-width':10 }));
+    g.appendChild(svgEl('line', { x1, y1, x2, y2, stroke: selected ? '#2563eb' : '#333', 'stroke-width': selected ? 2 : 1.5 }));
+    if (selected) {
+      g.appendChild(svgEl('circle', { cx:x1, cy:y1, r:3, fill:'#2563eb' }));
+      g.appendChild(svgEl('circle', { cx:x2, cy:y2, r:3, fill:'#2563eb' }));
+    }
+    return g;
+  }
+
+  if (f.field_type === 'Graph') {
+    const w = Math.max(4, (f.x_end_pos - f.x_pos) * scale);
+    const h = Math.max(4, (f.y_end_pos - f.y_pos) * scale);
+    g.appendChild(svgEl('rect', { x, y, width:w, height:h, fill:'#f0f0f0', stroke: selected ? '#2563eb' : '#aaa', 'stroke-width':1, 'stroke-dasharray':'4,3' }));
+    g.appendChild(svgEl('text', { x:x+2, y:y+10, 'font-size':7, fill:'#999', 'font-family':'sans-serif' }, '[image]'));
+    return g;
+  }
+
+  // Regular and Text fields — render actual content at proportional size
+  const fontSize   = Math.max(6, (f.font_size || 10) / 72 * scale);
+  const fontWeight = f.font_bold ? 'bold' : 'normal';
+  const displayVal = getFieldDisplayValue(f);
+  const lines      = Array.isArray(displayVal) ? displayVal : [String(displayVal)];
+  const lineHeight = fontSize * 1.3;
+
+  // Invisible hit area so the element is always draggable
+  const approxCharW = fontSize * 0.58;
+  const hitW = Math.max(20, lines.reduce((m, l) => Math.max(m, l.length * approxCharW), 0));
+  const hitH = lines.length * lineHeight + 2;
+  g.appendChild(svgEl('rect', { x, y: y - fontSize, width: hitW, height: hitH, fill: 'transparent' }));
+
+  // Selection highlight
+  if (selected) {
+    g.appendChild(svgEl('rect', {
+      x: x - 2, y: y - fontSize - 2,
+      width: hitW + 4, height: hitH + 4,
+      fill: 'rgba(37,99,235,0.06)', stroke: '#2563eb',
+      'stroke-width': 1, 'stroke-dasharray': '4,3', rx: 2,
+    }));
+  }
+
+  // Text content
+  if (lines.length === 1) {
+    g.appendChild(svgEl('text', {
+      x, y,
+      'font-size': fontSize,
+      'font-family': 'Helvetica, Arial, sans-serif',
+      'font-weight': fontWeight,
+      fill: '#111',
+    }, lines[0]));
+  } else {
+    const textEl = svgEl('text', {
+      x, y,
+      'font-size': fontSize,
+      'font-family': 'Helvetica, Arial, sans-serif',
+      'font-weight': fontWeight,
+      fill: '#111',
+    });
+    lines.forEach((line, i) => {
+      textEl.appendChild(svgEl('tspan', { x, dy: i === 0 ? 0 : lineHeight }, line));
+    });
+    g.appendChild(textEl);
+  }
+
+  return g;
+}
+
+function attachFieldEvents(g, f) {
+  g.addEventListener('mousedown', e => {
+    selectLayoutField(f.id);
+    startLayoutDrag(e, f);
+    e.stopPropagation();
+    e.preventDefault();
+  });
+}
+
+function selectLayoutField(id) {
+  layoutState.selectedId = id;
+  const sel = document.getElementById('layout-field-select');
+  if (sel) sel.value = id;
+  const f = layoutState.fields.find(x => x.id === id);
+  if (f) updateLayoutSidebar(f);
+  renderLayoutCanvas();
+}
+
+function updateLayoutSidebar(f) {
+  const fmt = x => (x || 0).toFixed(4);
+  document.getElementById('layout-field-visible').checked = !!f.visible;
+  document.getElementById('layout-field-x').value  = fmt(f.x_pos);
+  document.getElementById('layout-field-y').value  = fmt(f.y_pos);
+  document.getElementById('layout-field-x2').value = fmt(f.x_end_pos);
+  document.getElementById('layout-field-y2').value = fmt(f.y_end_pos);
+  setFracEl('layout-field-x-frac',  f.x_pos);
+  setFracEl('layout-field-y-frac',  f.y_pos);
+  setFracEl('layout-field-x2-frac', f.x_end_pos);
+  setFracEl('layout-field-y2-frac', f.y_end_pos);
+  document.getElementById('layout-end-pos-group').hidden =
+    f.field_type !== 'Line' && f.field_type !== 'Graph';
+}
+
+function onLayoutSidebarChange() {
+  const f = layoutState.fields.find(x => x.id === layoutState.selectedId);
+  if (!f) return;
+  f.x_pos     = clampIn(parseFloat(document.getElementById('layout-field-x').value)  || 0, 0, 8.5);
+  f.y_pos     = clampIn(parseFloat(document.getElementById('layout-field-y').value)  || 0, 0, 3.5);
+  f.x_end_pos = clampIn(parseFloat(document.getElementById('layout-field-x2').value) || 0, 0, 8.5);
+  f.y_end_pos = clampIn(parseFloat(document.getElementById('layout-field-y2').value) || 0, 0, 3.5);
+  f.visible   = document.getElementById('layout-field-visible').checked ? 1 : 0;
+  setFracEl('layout-field-x-frac',  f.x_pos);
+  setFracEl('layout-field-y-frac',  f.y_pos);
+  setFracEl('layout-field-x2-frac', f.x_end_pos);
+  setFracEl('layout-field-y2-frac', f.y_end_pos);
+  renderLayoutCanvas();
+  debounceLayoutSave(f);
+}
+
+function startLayoutDrag(e, f) {
+  layoutDrag = {
+    fieldId: f.id,
+    origX: f.x_pos, origY: f.y_pos,
+    origX2: f.x_end_pos, origY2: f.y_end_pos,
+    mouseX: e.clientX, mouseY: e.clientY,
+    moveEnd: f.field_type === 'Line' || f.field_type === 'Graph',
+  };
+  const onMove = ev => onLayoutDragMove(ev);
+  const onUp   = ev => { onLayoutDragEnd(ev); document.removeEventListener('mousemove', onMove); document.removeEventListener('mouseup', onUp); };
+  document.addEventListener('mousemove', onMove);
+  document.addEventListener('mouseup',   onUp);
+}
+
+function onLayoutDragMove(e) {
+  if (!layoutDrag) return;
+  const dx = (e.clientX - layoutDrag.mouseX) / layoutState.scale;
+  const dy = (e.clientY - layoutDrag.mouseY) / layoutState.scale;
+  const f  = layoutState.fields.find(x => x.id === layoutDrag.fieldId);
+  if (!f) return;
+  f.x_pos = clampIn(round16(layoutDrag.origX  + dx), SAFE_LEFT, SAFE_RIGHT);
+  f.y_pos = clampIn(round16(layoutDrag.origY  + dy), SAFE_TOP,  SAFE_BOTTOM);
+  if (layoutDrag.moveEnd) {
+    f.x_end_pos = clampIn(round16(layoutDrag.origX2 + dx), SAFE_LEFT, SAFE_RIGHT);
+    f.y_end_pos = clampIn(round16(layoutDrag.origY2 + dy), SAFE_TOP,  SAFE_BOTTOM);
+  }
+  // Update just the dragged element for smooth performance
+  const svg = document.querySelector('#layout-canvas-container svg');
+  if (svg) {
+    const old = svg.querySelector(`[data-field-id="${f.id}"]`);
+    if (old) {
+      const g = createFieldSvgElement(f, layoutState.scale, true);
+      old.replaceWith(g);
+      attachFieldEvents(g, f);
+    }
+  }
+  updateLayoutSidebar(f);
+}
+
+async function onLayoutDragEnd(e) {
+  if (!layoutDrag) return;
+  const id = layoutDrag.fieldId;
+  layoutDrag = null;
+  const f = layoutState.fields.find(x => x.id === id);
+  if (f) await saveLayoutField(f);
+}
+
+function nudgeLayoutField(dx, dy) {
+  const f = layoutState.fields.find(x => x.id === layoutState.selectedId);
+  if (!f) return;
+  const S = 1 / 16;
+  f.x_pos = clampIn(round16(f.x_pos + dx * S), SAFE_LEFT, SAFE_RIGHT);
+  f.y_pos = clampIn(round16(f.y_pos + dy * S), SAFE_TOP,  SAFE_BOTTOM);
+  if (f.field_type === 'Line' || f.field_type === 'Graph') {
+    f.x_end_pos = clampIn(round16(f.x_end_pos + dx * S), SAFE_LEFT, SAFE_RIGHT);
+    f.y_end_pos = clampIn(round16(f.y_end_pos + dy * S), SAFE_TOP,  SAFE_BOTTOM);
+  }
+  updateLayoutSidebar(f);
+  renderLayoutCanvas();
+  debounceLayoutSave(f);
+}
+
+function debounceLayoutSave(f) {
+  clearTimeout(layoutSaveTimer);
+  layoutSaveTimer = setTimeout(() => saveLayoutField(f), 600);
+}
+
+async function saveLayoutField(f) {
+  try {
+    await apiFetch('PUT', `/api/layout/${state.activeAccountId}/${f.id}`, {
+      x_pos: f.x_pos, y_pos: f.y_pos,
+      x_end_pos: f.x_end_pos, y_end_pos: f.y_end_pos,
+      visible: f.visible,
+    });
+    const el = document.getElementById('layout-save-status');
+    if (el) { el.textContent = 'Saved ✓'; setTimeout(() => { if (el) el.textContent = ''; }, 1500); }
+  } catch (err) {
+    const el = document.getElementById('layout-save-status');
+    if (el) el.textContent = 'Save failed';
+  }
+}
+
+async function previewLayoutPdf() {
+  const btn = document.getElementById('btn-layout-preview');
+  const orig = btn.textContent;
+  btn.disabled = true;
+  btn.textContent = '…';
+  try {
+    const res = await fetch('/api/pdf/preview', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ account_id: state.activeAccountId }),
+    });
+    if (!res.ok) {
+      const err = await res.json().catch(() => ({ error: res.statusText }));
+      throw new Error(err.error || res.statusText);
+    }
+    const blob = await res.blob();
+    openPdfBlob(blob, 'layout-preview.pdf');
+  } catch (err) {
+    alert('Preview error: ' + err.message);
+  } finally {
+    btn.disabled = false;
+    btn.textContent = orig;
+  }
+}
+
+async function resetLayoutToDefault() {
+  if (!confirm('Reset all layout fields to default positions? This cannot be undone.')) return;
+  try {
+    await apiFetch('POST', `/api/layout/${state.activeAccountId}/reset`);
+    await loadLayoutFields();
+  } catch (err) {
+    alert('Reset failed: ' + err.message);
+  }
+}
+
 document.addEventListener('DOMContentLoaded', init);

src/app.js

@@ -4,16 +4,23 @@ const express   = require('express');
 const path      = require('path');
 const fs        = require('fs');
 const os        = require('os');
-const crypto    = require('crypto');
 const { execFileSync } = require('child_process');
 const multer    = require('multer');
 const session   = require('express-session');
 
 const db     = require('./db/database');
-const { requireAuth, requireAdmin, canAccessAccount } = require('./middleware/auth');
+const { seedLayoutFields } = require('./db/database');
+const { requireAuth, requireAdmin, canAccessAccount, isEditorForAccount } = require('./middleware/auth');
 
 const app    = express();
-const upload = multer({ dest: os.tmpdir() });
+app.disable('x-powered-by');
+const upload = multer({ dest: os.tmpdir(), limits: { fileSize: 50 * 1024 * 1024 } });
+
+// US ABA routing numbers are exactly 9 digits (spaces/dashes tolerated on input)
+function normalizeRoutingNumber(value) {
+  const digits = String(value || '').replace(/[\s-]/g, '');
+  return /^\d{9}$/.test(digits) ? digits : null;
+}
 
 // ── Session store (SQLite-backed, no extra packages) ──────────────────────────
 const SessionStore = require('./lib/SessionStore');
@@ -26,12 +33,20 @@ const SESSION_SECRET = process.env.SESSION_SECRET;
 
 const SESSION_MAX_AGE_MS = (parseInt(process.env.SESSION_MAX_AGE_HOURS, 10) || 168) * 60 * 60 * 1000;
 
+// Behind a reverse proxy (TLS termination), set TRUST_PROXY=1 so req.ip and
+// req.protocol reflect the original client instead of the proxy.
+if (process.env.TRUST_PROXY === '1' || process.env.TRUST_PROXY === 'true') {
+  app.set('trust proxy', 1);
+}
+
 app.use(session({
   store: new SessionStore(db),
   secret: SESSION_SECRET,
   resave: false,
   saveUninitialized: false,
-  cookie: { httpOnly: true, sameSite: 'strict', maxAge: SESSION_MAX_AGE_MS },
+  // secure: 'auto' marks the cookie Secure only on TLS connections, so plain-HTTP
+  // LAN deployments keep working while proxied HTTPS deployments get Secure cookies
+  cookie: { httpOnly: true, sameSite: 'strict', secure: 'auto', maxAge: SESSION_MAX_AGE_MS },
 }));
 
 // Security headers
@@ -105,34 +120,41 @@ app.put('/api/account/:id', requireAdmin, (req, res) => {
     bank_name, bank_info1, bank_info2, bank_info3, transit_code,
     routing_number, account_number,
     offset_left, offset_right, offset_up, offset_down,
-    logo_data, second_signature,
+    logo_data, second_signature, check_position,
   } = req.body;
 
   if (!company1 || !routing_number || !account_number) {
     return res.status(400).json({ error: 'Organization name, routing number, and account number are required.' });
   }
+  const normalizedRouting = normalizeRoutingNumber(routing_number);
+  if (!normalizedRouting) {
+    return res.status(400).json({ error: 'Routing number must be exactly 9 digits.' });
+  }
   const MAX_IMAGE_BYTES = 512 * 1024; // 512 KB base64 limit
   if (logo_data && Buffer.byteLength(logo_data, 'utf8') > MAX_IMAGE_BYTES) {
     return res.status(400).json({ error: 'Logo image must be smaller than 512 KB.' });
   }
 
+  const VALID_POSITIONS = ['3-per-page', 'top', 'middle', 'bottom'];
+  const resolvedPosition = VALID_POSITIONS.includes(check_position) ? check_position : '3-per-page';
+
   db.prepare(`
     UPDATE account SET
       company1 = ?, company2 = ?, company3 = ?, company4 = ?,
       bank_name = ?, bank_info1 = ?, bank_info2 = ?, bank_info3 = ?, transit_code = ?,
       routing_number = ?, account_number = ?,
       offset_left = ?, offset_right = ?, offset_up = ?, offset_down = ?,
-      second_signature = ?,
+      second_signature = ?, check_position = ?,
       logo_data = CASE WHEN ? IS NOT NULL THEN ? ELSE logo_data END,
       updated_at = datetime('now')
     WHERE id = ?
   `).run(
     company1 || null, company2 || null, company3 || null, company4 || null,
     bank_name || '', bank_info1 || null, bank_info2 || null, bank_info3 || null, transit_code || null,
-    routing_number, account_number,
+    normalizedRouting, account_number,
     parseFloat(offset_left) || 0, parseFloat(offset_right) || 0,
     parseFloat(offset_up) || 0, parseFloat(offset_down) || 0,
-    second_signature ? 1 : 0,
+    second_signature ? 1 : 0, resolvedPosition,
     logo_data || null, logo_data || null,
     req.params.id
   );
@@ -191,64 +213,6 @@ app.delete('/api/account/:id', requireAdmin, (req, res) => {
   res.status(204).end();
 });
 
-// Default layout fields for manually-created accounts (no .mdb import).
-// Coordinates are in inches from the top-left of each check slot (8.5" × 3.5").
-// Field names for type 'Regular' must match the keys in pdfService.resolveFieldValue.
-function seedDefaultLayoutFields(accountId) {
-  const fields = [
-    // Company block — top left
-    { field_name: 'Company Name',  field_type: 'Regular', x_pos: 0.50, y_pos: 0.12, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica-Bold', font_size: 10, font_bold: 1, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Company Name2', field_type: 'Regular', x_pos: 0.50, y_pos: 0.30, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 9,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Company Name3', field_type: 'Regular', x_pos: 0.50, y_pos: 0.44, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 9,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Company Name4', field_type: 'Regular', x_pos: 0.50, y_pos: 0.58, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 9,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    // Check number — top right
-    { field_name: 'Check Number',  field_type: 'Regular', x_pos: 7.20, y_pos: 0.12, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica-Bold', font_size: 10, font_bold: 1, field_text: null, line_thick: 1, visible: 1 },
-    // Date — upper right
-    { field_name: 'Date Label',    field_type: 'Text',    x_pos: 5.80, y_pos: 0.40, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 8,  font_bold: 0, field_text: 'DATE', line_thick: 1, visible: 1 },
-    { field_name: 'Date',          field_type: 'Regular', x_pos: 6.30, y_pos: 0.40, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 9,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    // Pay to the order of
-    { field_name: 'Pay To Label',  field_type: 'Text',    x_pos: 0.30, y_pos: 0.82, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 7,  font_bold: 0, field_text: 'PAY TO THE ORDER OF', line_thick: 1, visible: 1 },
-    { field_name: 'Payee Name',    field_type: 'Regular', x_pos: 2.15, y_pos: 0.80, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    // Amount box
-    { field_name: 'Dollar Sign',   field_type: 'Text',    x_pos: 6.80, y_pos: 0.80, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 10, font_bold: 0, field_text: '$', line_thick: 1, visible: 1 },
-    { field_name: 'Amount',        field_type: 'Regular', x_pos: 6.95, y_pos: 0.80, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica-Bold', font_size: 10, font_bold: 1, field_text: null, line_thick: 1, visible: 1 },
-    // Written amount
-    { field_name: 'Text Amount',   field_type: 'Regular', x_pos: 0.30, y_pos: 1.28, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 9,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Dollars Label', field_type: 'Text',    x_pos: 6.30, y_pos: 1.28, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 8,  font_bold: 0, field_text: 'DOLLARS', line_thick: 1, visible: 1 },
-    // Bank info block
-    { field_name: 'Bank Information',  field_type: 'Regular', x_pos: 0.30, y_pos: 1.82, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica', font_size: 8,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Bank Transit Code', field_type: 'Regular', x_pos: 0.30, y_pos: 2.38, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica', font_size: 7,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    // Payee address — center window area (for windowed envelopes)
-    { field_name: 'Payee Address', field_type: 'Regular', x_pos: 3.50, y_pos: 1.82, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 9,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    // Memo
-    { field_name: 'Memo Label',    field_type: 'Text',    x_pos: 0.30, y_pos: 2.82, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 7,  font_bold: 0, field_text: 'MEMO', line_thick: 1, visible: 1 },
-    { field_name: 'Memo',          field_type: 'Regular', x_pos: 0.72, y_pos: 2.82, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 9,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    // Auth signature label
-    { field_name: 'Auth Signature Label', field_type: 'Text', x_pos: 5.00, y_pos: 3.14, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica', font_size: 6,  font_bold: 0, field_text: 'AUTHORIZED SIGNATURE', line_thick: 1, visible: 1 },
-    // Lines
-    { field_name: 'Payee Line',       field_type: 'Line', x_pos: 2.10, y_pos: 1.00, x_end_pos: 6.70, y_end_pos: 1.00, font_name: 'Helvetica', font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Amount Box Top',   field_type: 'Line', x_pos: 6.75, y_pos: 0.70, x_end_pos: 8.30, y_end_pos: 0.70, font_name: 'Helvetica', font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Amount Box Left',  field_type: 'Line', x_pos: 6.75, y_pos: 0.70, x_end_pos: 6.75, y_end_pos: 1.05, font_name: 'Helvetica', font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Amount Box Bottom',field_type: 'Line', x_pos: 6.75, y_pos: 1.05, x_end_pos: 8.30, y_end_pos: 1.05, font_name: 'Helvetica', font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Text Amount Line', field_type: 'Line', x_pos: 0.30, y_pos: 1.48, x_end_pos: 6.30, y_end_pos: 1.48, font_name: 'Helvetica', font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Memo Line',        field_type: 'Line', x_pos: 0.68, y_pos: 3.00, x_end_pos: 4.00, y_end_pos: 3.00, font_name: 'Helvetica', font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-    { field_name: 'Signature Line',   field_type: 'Line', x_pos: 5.00, y_pos: 3.10, x_end_pos: 8.20, y_end_pos: 3.10, font_name: 'Helvetica', font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
-  ];
-
-  const stmt = db.prepare(`
-    INSERT OR IGNORE INTO layout_fields
-      (account_id, field_name, field_text, font_name, font_size, font_bold,
-       field_type, line_thick, x_pos, y_pos, x_end_pos, y_end_pos, visible)
-    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
-  `);
-  db.transaction(() => {
-    for (const f of fields) {
-      stmt.run(accountId, f.field_name, f.field_text, f.font_name, f.font_size, f.font_bold,
-               f.field_type, f.line_thick, f.x_pos, f.y_pos, f.x_end_pos, f.y_end_pos, f.visible);
-    }
-  })();
-}
-
 // POST /api/account/setup (admin only — creates a new checking account)
 app.post('/api/account/setup', requireAdmin, (req, res) => {
   const {
@@ -260,6 +224,10 @@ app.post('/api/account/setup', requireAdmin, (req, res) => {
   if (!company1 || !routing_number || !account_number || !start_check_no) {
     return res.status(400).json({ error: 'Organization name, routing number, account number, and starting check number are required.' });
   }
+  const normalizedRouting = normalizeRoutingNumber(routing_number);
+  if (!normalizedRouting) {
+    return res.status(400).json({ error: 'Routing number must be exactly 9 digits.' });
+  }
   const checkNo = parseInt(start_check_no, 10);
   if (isNaN(checkNo) || checkNo < 1) {
     return res.status(400).json({ error: 'Starting check number must be a positive integer.' });
@@ -280,7 +248,7 @@ app.post('/api/account/setup', requireAdmin, (req, res) => {
     bank_info1:       bank_info1 || null,
     bank_info2:       bank_info2 || null,
     transit_code:     transit_code || null,
-    routing_number,
+    routing_number:   normalizedRouting,
     account_number,
     start_check_no:   checkNo,
     current_check_no: checkNo,
@@ -291,7 +259,7 @@ app.post('/api/account/setup', requireAdmin, (req, res) => {
     logo_data:        logo_data || null,
   });
 
-  seedDefaultLayoutFields(result.lastInsertRowid);
+  seedLayoutFields(result.lastInsertRowid);
 
   res.status(201).json({ success: true, accountId: result.lastInsertRowid });
 });
@@ -318,11 +286,62 @@ app.post('/api/import', requireAdmin, upload.single('mdbfile'), (req, res) => {
   }
 });
 
+// ── Layout editor routes ───────────────────────────────────────────────────────
+
+// GET /api/layout/:accountId — all layout_fields for an account
+app.get('/api/layout/:accountId', requireAuth, (req, res) => {
+  const accountId = parseInt(req.params.accountId, 10);
+  if (!canAccessAccount(req.session, accountId)) return res.status(403).json({ error: 'Access denied.' });
+  const fields = db.prepare('SELECT * FROM layout_fields WHERE account_id = ? ORDER BY id').all(accountId);
+  res.json(fields);
+});
+
+// PUT /api/layout/:accountId/:fieldId — update position/visibility of one field
+app.put('/api/layout/:accountId/:fieldId', requireAuth, (req, res) => {
+  const accountId = parseInt(req.params.accountId, 10);
+  const fieldId   = parseInt(req.params.fieldId,   10);
+  if (!isEditorForAccount(req.session, accountId)) return res.status(403).json({ error: 'Write access required.' });
+  const { x_pos, y_pos, x_end_pos, y_end_pos, visible } = req.body;
+  db.prepare(`
+    UPDATE layout_fields SET x_pos=?, y_pos=?, x_end_pos=?, y_end_pos=?, visible=?
+    WHERE id=? AND account_id=?
+  `).run(
+    parseFloat(x_pos) || 0, parseFloat(y_pos) || 0,
+    parseFloat(x_end_pos) || 0, parseFloat(y_end_pos) || 0,
+    visible ? 1 : 0, fieldId, accountId
+  );
+  res.json({ success: true });
+});
+
+// POST /api/layout/:accountId/reset — wipe and re-seed default layout (admin only)
+app.post('/api/layout/:accountId/reset', requireAdmin, (req, res) => {
+  const accountId = parseInt(req.params.accountId, 10);
+  db.prepare('DELETE FROM layout_fields WHERE account_id = ?').run(accountId);
+  seedLayoutFields(accountId);
+  res.json({ success: true });
+});
+
 // Catch-all: serve index.html
 app.get('*', (req, res) => {
   res.sendFile(path.join(__dirname, '../public/index.html'));
 });
 
+// JSON error handler — keeps stack traces out of responses
+// eslint-disable-next-line no-unused-vars
+app.use((err, req, res, next) => {
+  if (err.code === 'LIMIT_FILE_SIZE') {
+    return res.status(413).json({ error: 'Uploaded file is too large.' });
+  }
+  if (err.type === 'entity.too.large') {
+    return res.status(413).json({ error: 'Request body is too large.' });
+  }
+  if (err.type === 'entity.parse.failed') {
+    return res.status(400).json({ error: 'Invalid JSON in request body.' });
+  }
+  console.error('[error]', err);
+  res.status(500).json({ error: 'Internal server error.' });
+});
+
 const PORT = process.env.PORT || 3000;
 app.listen(PORT, () => {
   console.log(`ezcheck running on http://localhost:${PORT}`);

src/db/database.js

@@ -139,6 +139,17 @@ db.exec(`
   )
 `);
 
+// Migration: add OIDC columns to users
+const usersInfo2 = db.prepare('PRAGMA table_info(users)').all();
+if (!usersInfo2.some(c => c.name === 'oidc_sub')) {
+  db.exec(`
+    ALTER TABLE users ADD COLUMN oidc_sub TEXT;
+    ALTER TABLE users ADD COLUMN oidc_issuer TEXT;
+    CREATE UNIQUE INDEX IF NOT EXISTS idx_users_oidc ON users(oidc_issuer, oidc_sub)
+      WHERE oidc_sub IS NOT NULL;
+  `);
+}
+
 // Migration: create settings table
 db.exec(`
   CREATE TABLE IF NOT EXISTS settings (
@@ -147,19 +158,10 @@ db.exec(`
   )
 `);
 
-// Migration: seed default layout fields for any account that has none.
-// Runs at every startup but INSERT OR IGNORE makes it idempotent.
-(function seedMissingLayoutFields() {
-  const accounts = db.prepare('SELECT id FROM account').all();
-  const countStmt = db.prepare('SELECT COUNT(*) AS n FROM layout_fields WHERE account_id = ?');
-  const insertStmt = db.prepare(`
-    INSERT OR IGNORE INTO layout_fields
-      (account_id, field_name, field_text, font_name, font_size, font_bold,
-       field_type, line_thick, x_pos, y_pos, x_end_pos, y_end_pos, visible)
-    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
-  `);
-
-  const defaultFields = [
+// Default layout fields used for seeding and migration.
+const DEFAULT_LAYOUT_FIELDS = [
+    // Logo — top left corner (Graph type, rendered as image from account.logo_data)
+    { field_name: 'Logo',          field_type: 'Graph',   x_pos: 0.10, y_pos: 0.08, x_end_pos: 0.45, y_end_pos: 0.58, font_name: 'Helvetica', font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
     // Company block — top left
     { field_name: 'Company Name',  field_type: 'Regular', x_pos: 0.50, y_pos: 0.12, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica-Bold', font_size: 10, font_bold: 1, field_text: null, line_thick: 1, visible: 1 },
     { field_name: 'Company Name2', field_type: 'Regular', x_pos: 0.50, y_pos: 0.30, x_end_pos: 0, y_end_pos: 0, font_name: 'Helvetica',      font_size: 9,  font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
@@ -199,18 +201,57 @@ db.exec(`
     { field_name: 'Signature Line',    field_type: 'Line', x_pos: 5.00, y_pos: 3.10, x_end_pos: 8.20, y_end_pos: 3.10, font_name: 'Helvetica', font_size: 10, font_bold: 0, field_text: null, line_thick: 1, visible: 1 },
   ];
 
-  const seedAccount = db.transaction(accountId => {
-    for (const f of defaultFields) {
-      insertStmt.run(accountId, f.field_name, f.field_text, f.font_name, f.font_size, f.font_bold,
+function seedLayoutFields(accountId) {
+  const insert = db.prepare(`
+    INSERT OR IGNORE INTO layout_fields
+      (account_id, field_name, field_text, font_name, font_size, font_bold,
+       field_type, line_thick, x_pos, y_pos, x_end_pos, y_end_pos, visible)
+    VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+  `);
+  db.transaction(() => {
+    for (const f of DEFAULT_LAYOUT_FIELDS) {
+      insert.run(accountId, f.field_name, f.field_text, f.font_name, f.font_size, f.font_bold,
         f.field_type, f.line_thick, f.x_pos, f.y_pos, f.x_end_pos, f.y_end_pos, f.visible);
     }
-  });
-
-  for (const { id } of accounts) {
-    if (countStmt.get(id).n === 0) {
-      seedAccount(id);
+  })();
 }
+
+// Migration: reset all accounts to default layout (runs once, gated by settings key).
+// Replaces any .mdb-imported or legacy layout_fields with the clean default layout.
+if (!db.prepare("SELECT value FROM settings WHERE key = 'layout_reset_v1'").get()) {
+  const accounts = db.prepare('SELECT id FROM account').all();
+  db.transaction(() => {
+    for (const { id } of accounts) {
+      db.prepare('DELETE FROM layout_fields WHERE account_id = ?').run(id);
+      seedLayoutFields(id);
+    }
+    db.prepare("INSERT OR REPLACE INTO settings (key, value) VALUES ('layout_reset_v1', '1')").run();
+  })();
+}
+
+// Migration: add Logo field to existing accounts that don't have one.
+(function addLogoField() {
+  const accounts = db.prepare('SELECT id FROM account').all();
+  const insertLogo = db.prepare(`
+    INSERT OR IGNORE INTO layout_fields
+      (account_id, field_name, field_text, font_name, font_size, font_bold,
+       field_type, line_thick, x_pos, y_pos, x_end_pos, y_end_pos, visible)
+    VALUES (?, 'Logo', NULL, 'Helvetica', 10, 0, 'Graph', 1, 0.10, 0.08, 0.45, 0.58, 1)
+  `);
+  for (const { id } of accounts) {
+    const existing = db.prepare("SELECT id FROM layout_fields WHERE account_id = ? AND field_name = 'Logo'").get(id);
+    if (!existing) insertLogo.run(id);
+  }
+})();
+
+// Migration: seed default layout fields for any account that has none (ongoing, idempotent).
+(function seedMissingLayoutFields() {
+  const accounts = db.prepare('SELECT id FROM account').all();
+  for (const { id } of accounts) {
+    const { n } = db.prepare('SELECT COUNT(*) AS n FROM layout_fields WHERE account_id = ?').get(id);
+    if (n === 0) seedLayoutFields(id);
   }
 })();
 
 module.exports = db;
+module.exports.seedLayoutFields = seedLayoutFields;

src/lib/SessionStore.js

@@ -7,16 +7,20 @@ const { Store } = require('express-session');
 class SessionStore extends Store {
   constructor(db) {
     super();
-    this.db = db;
+    // Prepared once — get/set run on every request
+    this.getStmt   = db.prepare('SELECT sess, expired FROM sessions WHERE sid = ?');
+    this.setStmt   = db.prepare('INSERT OR REPLACE INTO sessions (sid, sess, expired) VALUES (?, ?, ?)');
+    this.delStmt   = db.prepare('DELETE FROM sessions WHERE sid = ?');
+    this.purgeStmt = db.prepare('DELETE FROM sessions WHERE expired < ?');
     // Purge expired sessions every 10 minutes
     setInterval(() => {
-      try { db.prepare('DELETE FROM sessions WHERE expired < ?').run(Date.now()); } catch (_) {}
+      try { this.purgeStmt.run(Date.now()); } catch (_) {}
     }, 10 * 60 * 1000).unref();
   }
 
   get(sid, cb) {
     try {
-      const row = this.db.prepare('SELECT sess, expired FROM sessions WHERE sid = ?').get(sid);
+      const row = this.getStmt.get(sid);
       if (!row) return cb(null, null);
       if (Date.now() > row.expired) {
         this.destroy(sid, () => {});
@@ -28,20 +32,19 @@ class SessionStore extends Store {
 
   set(sid, sess, cb) {
     try {
+      // cookie.maxAge is already in milliseconds
       const maxAge = (sess.cookie && sess.cookie.maxAge)
-        ? sess.cookie.maxAge * 1000
+        ? sess.cookie.maxAge
         : 7 * 24 * 60 * 60 * 1000;
       const expired = Date.now() + maxAge;
-      this.db.prepare(
-        'INSERT OR REPLACE INTO sessions (sid, sess, expired) VALUES (?, ?, ?)'
-      ).run(sid, JSON.stringify(sess), expired);
+      this.setStmt.run(sid, JSON.stringify(sess), expired);
       cb(null);
     } catch (e) { cb(e); }
   }
 
   destroy(sid, cb) {
     try {
-      this.db.prepare('DELETE FROM sessions WHERE sid = ?').run(sid);
+      this.delStmt.run(sid);
       cb(null);
     } catch (e) { cb(e); }
   }

src/middleware/auth.js

@@ -2,6 +2,11 @@
 
 const db = require('../db/database');
 
+// Prepared once — this lookup runs on nearly every authenticated request
+const accountRoleStmt = db.prepare(
+  'SELECT role FROM user_accounts WHERE user_id = ? AND account_id = ?'
+);
+
 function requireAuth(req, res, next) {
   if (!req.session || !req.session.userId) {
     return res.status(401).json({ error: 'Not authenticated.' });
@@ -28,10 +33,7 @@ function requireEditor(req, res, next) {
 function canAccessAccount(session, accountId) {
   if (!session || !session.userId) return false;
   if (session.role === 'admin') return true;
-  const row = db.prepare(
-    'SELECT 1 FROM user_accounts WHERE user_id = ? AND account_id = ?'
-  ).get(session.userId, accountId);
-  return !!row;
+  return !!accountRoleStmt.get(session.userId, accountId);
 }
 
 // Returns true if the user has editor (write) access to the given account.
@@ -39,9 +41,7 @@ function canAccessAccount(session, accountId) {
 function isEditorForAccount(session, accountId) {
   if (!session || !session.userId) return false;
   if (session.role === 'admin') return true;
-  const row = db.prepare(
-    "SELECT role FROM user_accounts WHERE user_id = ? AND account_id = ?"
-  ).get(session.userId, accountId);
+  const row = accountRoleStmt.get(session.userId, accountId);
   return !!(row && row.role === 'editor');
 }
 

src/routes/auth.js

@@ -15,45 +15,57 @@ function validatePassword(password) {
   return null;
 }
 
-// ── Login rate limiter ────────────────────────────────────────────────────────
-// Tracks failed login attempts per IP. After 10 failures within 15 minutes,
+// ── Rate limiting ─────────────────────────────────────────────────────────────
+// Sliding-window counter per key (IP). After `max` hits within `windowMs`,
 // further attempts are blocked until the window resets.
-const loginAttempts = new Map(); // ip -> { count, resetAt }
-const RATE_WINDOW_MS  = 15 * 60 * 1000; // 15 minutes
-const RATE_MAX_FAILS  = 10;
-
-function checkLoginRate(ip) {
-  const now  = Date.now();
-  const entry = loginAttempts.get(ip);
-  if (!entry || now > entry.resetAt) {
-    loginAttempts.set(ip, { count: 0, resetAt: now + RATE_WINDOW_MS });
-    return true; // allow
-  }
-  return entry.count < RATE_MAX_FAILS;
-}
-
-function recordLoginFailure(ip) {
-  const now   = Date.now();
-  const entry = loginAttempts.get(ip);
-  if (!entry || now > entry.resetAt) {
-    loginAttempts.set(ip, { count: 1, resetAt: now + RATE_WINDOW_MS });
-  } else {
-    entry.count++;
-  }
-}
-
-function clearLoginFailures(ip) {
-  loginAttempts.delete(ip);
-}
+function makeRateLimiter(max, windowMs) {
+  const attempts = new Map(); // key -> { count, resetAt }
 
   // Purge stale entries every 30 minutes to prevent unbounded memory growth
   setInterval(() => {
     const now = Date.now();
-  for (const [ip, entry] of loginAttempts) {
-    if (now > entry.resetAt) loginAttempts.delete(ip);
+    for (const [key, entry] of attempts) {
+      if (now > entry.resetAt) attempts.delete(key);
     }
   }, 30 * 60 * 1000).unref();
 
+  return {
+    allowed(key) {
+      const entry = attempts.get(key);
+      if (!entry || Date.now() > entry.resetAt) return true;
+      return entry.count < max;
+    },
+    record(key) {
+      const now   = Date.now();
+      const entry = attempts.get(key);
+      if (!entry || now > entry.resetAt) {
+        attempts.set(key, { count: 1, resetAt: now + windowMs });
+      } else {
+        entry.count++;
+      }
+    },
+    clear(key) {
+      attempts.delete(key);
+    },
+  };
+}
+
+// 10 failed logins per IP per 15 minutes
+const loginLimiter = makeRateLimiter(10, 15 * 60 * 1000);
+// 5 reset emails per IP per 15 minutes (counts every request, success or not)
+const resetLimiter = makeRateLimiter(5, 15 * 60 * 1000);
+
+// Regenerates the session ID before establishing a login (prevents session fixation)
+function establishSession(req, user, cb) {
+  req.session.regenerate(err => {
+    if (err) return cb(err);
+    req.session.userId   = user.id;
+    req.session.username = user.username;
+    req.session.role     = user.role;
+    cb(null);
+  });
+}
+
 // GET /api/auth/setup-needed — true when no users exist (first-run)
 router.get('/setup-needed', (req, res) => {
   const { n } = db.prepare('SELECT COUNT(*) AS n FROM users').get();
@@ -75,18 +87,18 @@ router.post('/setup', async (req, res) => {
     "INSERT INTO users (username, password_hash, role) VALUES (?, ?, 'admin')"
   ).run(username.trim(), hash);
 
-  req.session.userId   = result.lastInsertRowid;
-  req.session.username = username.trim();
-  req.session.role     = 'admin';
-
-  res.status(201).json({ id: result.lastInsertRowid, username: username.trim(), role: 'admin' });
+  const user = { id: result.lastInsertRowid, username: username.trim(), role: 'admin' };
+  establishSession(req, user, err => {
+    if (err) return res.status(500).json({ error: 'Failed to create session.' });
+    res.status(201).json(user);
+  });
 });
 
 // POST /api/auth/login
 router.post('/login', async (req, res) => {
   const ip = req.ip || req.socket.remoteAddress || 'unknown';
 
-  if (!checkLoginRate(ip)) {
+  if (!loginLimiter.allowed(ip)) {
     return res.status(429).json({ error: 'Too many failed login attempts. Please try again later.' });
   }
 
@@ -95,23 +107,22 @@ router.post('/login', async (req, res) => {
 
   const user = db.prepare('SELECT * FROM users WHERE username = ? COLLATE NOCASE').get(username.trim());
   if (!user) {
-    recordLoginFailure(ip);
+    loginLimiter.record(ip);
     return res.status(401).json({ error: 'Invalid username or password.' });
   }
 
   const match = await bcrypt.compare(password, user.password_hash);
   if (!match) {
-    recordLoginFailure(ip);
+    loginLimiter.record(ip);
     return res.status(401).json({ error: 'Invalid username or password.' });
   }
 
-  clearLoginFailures(ip);
-  req.session.userId   = user.id;
-  req.session.username = user.username;
-  req.session.role     = user.role;
-
+  loginLimiter.clear(ip);
+  establishSession(req, user, err => {
+    if (err) return res.status(500).json({ error: 'Failed to create session.' });
     res.json({ id: user.id, username: user.username, role: user.role });
   });
+});
 
 // POST /api/auth/logout
 router.post('/logout', (req, res) => {
@@ -123,7 +134,13 @@ router.get('/me', (req, res) => {
   if (!req.session || !req.session.userId) {
     return res.status(401).json({ error: 'Not authenticated.' });
   }
-  res.json({ id: req.session.userId, username: req.session.username, role: req.session.role });
+  const user = db.prepare('SELECT oidc_sub FROM users WHERE id = ?').get(req.session.userId);
+  res.json({
+    id: req.session.userId,
+    username: req.session.username,
+    role: req.session.role,
+    oidc_linked: !!(user && user.oidc_sub),
+  });
 });
 
 // POST /api/auth/change-password — any logged-in user can change their own password
@@ -148,6 +165,12 @@ router.post('/change-password', async (req, res) => {
 
 // POST /api/auth/forgot-password — always 200 to avoid user enumeration
 router.post('/forgot-password', async (req, res) => {
+  const ip = req.ip || req.socket.remoteAddress || 'unknown';
+  if (!resetLimiter.allowed(ip)) {
+    return res.status(429).json({ error: 'Too many reset requests. Please try again later.' });
+  }
+  resetLimiter.record(ip);
+
   const { email } = req.body;
   if (!email) return res.status(400).json({ error: 'Email is required.' });
 
@@ -162,7 +185,9 @@ router.post('/forgot-password', async (req, res) => {
       db.prepare('INSERT INTO password_reset_tokens (user_id, token_hash, expires_at) VALUES (?, ?, ?)').run(user.id, tokenHash, expiresAt);
     })();
 
-    const baseUrl   = `${req.protocol}://${req.get('host')}`;
+    // Prefer the configured base URL; deriving it from the Host header lets an
+    // attacker poison reset links (host header injection)
+    const baseUrl   = (process.env.APP_BASE_URL || `${req.protocol}://${req.get('host')}`).replace(/\/+$/, '');
     const resetLink = `${baseUrl}/#reset?token=${token}`;
 
     try {
@@ -200,5 +225,181 @@ router.post('/reset-password', async (req, res) => {
   res.json({ ok: true });
 });
 
+// ── OIDC helpers ─────────────────────────────────────────────────────────────
+
+function getOidcSettings() {
+  return {
+    enabled:       process.env.OIDC_ENABLED === '1' || process.env.OIDC_ENABLED === 'true',
+    discovery_url: process.env.OIDC_DISCOVERY_URL || '',
+    client_id:     process.env.OIDC_CLIENT_ID     || '',
+    client_secret: process.env.OIDC_CLIENT_SECRET || '',
+    redirect_uri:  process.env.OIDC_REDIRECT_URI  || '',
+    button_label:  process.env.OIDC_BUTTON_LABEL  || 'Sign in with SSO',
+  };
+}
+
+async function getOidcClient(settings) {
+  const { Issuer } = require('openid-client');
+  const issuer = await Issuer.discover(settings.discovery_url);
+  return new issuer.Client({
+    client_id:     settings.client_id,
+    client_secret: settings.client_secret,
+    redirect_uris: [settings.redirect_uri],
+    response_types: ['code'],
+  });
+}
+
+// GET /api/auth/oidc/config — public, returns whether OIDC is enabled + button label
+router.get('/oidc/config', (req, res) => {
+  const s = getOidcSettings();
+  res.json({ enabled: s.enabled, button_label: s.button_label });
+});
+
+// GET /api/auth/oidc/authorize — initiates the OIDC flow (redirect to provider)
+router.get('/oidc/authorize', async (req, res) => {
+  try {
+    const settings = getOidcSettings();
+    if (!settings.enabled) return res.status(400).json({ error: 'OIDC is not enabled.' });
+
+    const { generators } = require('openid-client');
+    const client = await getOidcClient(settings);
+
+    const code_verifier = generators.codeVerifier();
+    const code_challenge = generators.codeChallenge(code_verifier);
+    const state = generators.state();
+    const nonce = generators.nonce();
+
+    req.session.oidc = { code_verifier, state, nonce };
+
+    const authUrl = client.authorizationUrl({
+      scope: 'openid email profile',
+      state,
+      nonce,
+      code_challenge,
+      code_challenge_method: 'S256',
+    });
+
+    // Ensure session is persisted before redirecting (saveUninitialized is false)
+    req.session.save(() => res.redirect(authUrl));
+  } catch (err) {
+    console.error('[oidc] authorize error:', err.message);
+    res.redirect('/#oidc-error=' + encodeURIComponent('Failed to initiate SSO login.'));
+  }
+});
+
+// GET /api/auth/oidc/callback — handles the provider redirect
+router.get('/oidc/callback', async (req, res) => {
+  try {
+    const settings = getOidcSettings();
+    if (!settings.enabled) return res.redirect('/#oidc-error=' + encodeURIComponent('OIDC is not enabled.'));
+
+    const oidcSession = req.session.oidc;
+    if (!oidcSession) {
+      console.error('[oidc] callback: no oidc session data found — session may have expired or cookie lost');
+      return res.redirect('/#oidc-error=' + encodeURIComponent('Session expired. Please try again.'));
+    }
+
+    const client = await getOidcClient(settings);
+    const params = client.callbackParams(req);
+
+    const tokenSet = await client.callback(settings.redirect_uri, params, {
+      code_verifier: oidcSession.code_verifier,
+      state:         oidcSession.state,
+      nonce:         oidcSession.nonce,
+    });
+
+    const claims = tokenSet.claims();
+    const sub    = claims.sub;
+    const issuer = claims.iss;
+
+    delete req.session.oidc;
+
+    // Self-service linking flow
+    if (oidcSession.linking && oidcSession.linkUserId) {
+      const existing = db.prepare(
+        'SELECT id FROM users WHERE oidc_issuer = ? AND oidc_sub = ? AND id != ?'
+      ).get(issuer, sub, oidcSession.linkUserId);
+      if (existing) {
+        return res.redirect('/#oidc-error=' + encodeURIComponent('This identity is already linked to another account.'));
+      }
+
+      db.prepare("UPDATE users SET oidc_sub = ?, oidc_issuer = ?, updated_at = datetime('now') WHERE id = ?")
+        .run(sub, issuer, oidcSession.linkUserId);
+      console.log('[oidc] linked identity to userId=%s', oidcSession.linkUserId);
+      return res.redirect('/#oidc-linked');
+    }
+
+    // Login flow — look up user by OIDC identity
+    const user = db.prepare(
+      'SELECT id, username, role FROM users WHERE oidc_issuer = ? AND oidc_sub = ?'
+    ).get(issuer, sub);
+
+    if (!user) {
+      console.warn('[oidc] callback: identity not linked to any user');
+      return res.redirect('/#oidc-error=' + encodeURIComponent(
+        'No account is linked to this identity. Ask an admin to link your account, or sign in with your password and link it yourself.'
+      ));
+    }
+
+    console.log('[oidc] login success for userId=%s', user.id);
+    establishSession(req, user, err => {
+      if (err) return res.redirect('/#oidc-error=' + encodeURIComponent('SSO login failed. Please try again.'));
+      // Load account access into session (mirrors login behavior)
+      if (user.role !== 'admin') {
+        req.session.accounts = db.prepare('SELECT account_id, role FROM user_accounts WHERE user_id = ?').all(user.id);
+      }
+      res.redirect('/');
+    });
+  } catch (err) {
+    console.error('[oidc] callback error:', err.message);
+    res.redirect('/#oidc-error=' + encodeURIComponent('SSO login failed. Please try again.'));
+  }
+});
+
+// GET /api/auth/oidc/link — logged-in user initiates linking flow
+router.get('/oidc/link', async (req, res) => {
+  if (!req.session || !req.session.userId) {
+    return res.redirect('/#oidc-error=' + encodeURIComponent('You must be signed in to link your account.'));
+  }
+
+  try {
+    const settings = getOidcSettings();
+    if (!settings.enabled) return res.redirect('/#oidc-error=' + encodeURIComponent('OIDC is not enabled.'));
+
+    const { generators } = require('openid-client');
+    const client = await getOidcClient(settings);
+
+    const code_verifier = generators.codeVerifier();
+    const code_challenge = generators.codeChallenge(code_verifier);
+    const state = generators.state();
+    const nonce = generators.nonce();
+
+    req.session.oidc = { code_verifier, state, nonce, linking: true, linkUserId: req.session.userId };
+
+    const authUrl = client.authorizationUrl({
+      scope: 'openid email profile',
+      state,
+      nonce,
+      code_challenge,
+      code_challenge_method: 'S256',
+    });
+
+    req.session.save(() => res.redirect(authUrl));
+  } catch (err) {
+    console.error('[oidc] link error:', err.message);
+    res.redirect('/#oidc-error=' + encodeURIComponent('Failed to initiate SSO linking.'));
+  }
+});
+
+// POST /api/auth/oidc/unlink — logged-in user removes their own OIDC link
+router.post('/oidc/unlink', (req, res) => {
+  if (!req.session || !req.session.userId) {
+    return res.status(401).json({ error: 'Not authenticated.' });
+  }
+  db.prepare("UPDATE users SET oidc_sub = NULL, oidc_issuer = NULL, updated_at = datetime('now') WHERE id = ?")
+    .run(req.session.userId);
+  res.json({ ok: true });
+});
+
 module.exports = router;
 module.exports.validatePassword = validatePassword;

src/routes/pdf.js

@@ -4,7 +4,7 @@ const express = require('express');
 const router = express.Router();
 const db = require('../db/database');
 const { generateCheckPdf } = require('../services/pdfService');
-const { isEditorForAccount } = require('../middleware/auth');
+const { canAccessAccount, isEditorForAccount } = require('../middleware/auth');
 
 /**
  * POST /api/pdf
@@ -30,10 +30,11 @@ router.post('/', async (req, res) => {
   }
 
   // Fetch checks in the order provided; verify each belongs to the declared account
+  const checkStmt = db.prepare('SELECT * FROM checks WHERE id = ?');
   let checks;
   try {
     checks = checkIds.map(id => {
-      const check = db.prepare('SELECT * FROM checks WHERE id = ?').get(id);
+      const check = checkStmt.get(id);
       if (!check) throw new Error(`Check ID ${id} not found`);
       if (check.account_id !== resolvedAccountId) throw new Error(`Check ID ${id} does not belong to this account`);
       return check;
@@ -70,4 +71,60 @@ router.post('/', async (req, res) => {
   }
 });
 
+/**
+ * POST /api/pdf/preview
+ * Body: { account_id: X }
+ *
+ * Generates a layout preview PDF using dummy check data — no real checks touched.
+ * Shows all three slots filled with sample data so every visible field is visible.
+ */
+router.post('/preview', async (req, res) => {
+  const resolvedAccountId = parseInt(req.body.account_id, 10);
+  if (!resolvedAccountId) return res.status(400).json({ error: 'account_id required' });
+  // The preview renders the MICR line (routing + account number) — same access
+  // rules as reading the account itself
+  if (!canAccessAccount(req.session, resolvedAccountId)) {
+    return res.status(403).json({ error: 'Access denied.' });
+  }
+
+  const account = db.prepare('SELECT * FROM account WHERE id = ?').get(resolvedAccountId);
+  if (!account) return res.status(404).json({ error: 'Account not found.' });
+
+  const fields = db.prepare('SELECT * FROM layout_fields WHERE account_id = ?').all(resolvedAccountId);
+
+  const DUMMY_CHECK = {
+    id: 0,
+    check_no: 1001,
+    payee: 'Sample Payee Name',
+    amount: 1234.56,
+    check_date: new Date().toISOString().slice(0, 10),
+    memo: 'Sample Memo',
+    payee_address1: '123 Sample Street',
+    payee_address2: 'City, ST 12345',
+    payee_address3: null,
+    payee_address4: null,
+    printed: 0,
+    account_id: resolvedAccountId,
+  };
+
+  const checks = [
+    { ...DUMMY_CHECK, check_no: 1001 },
+    { ...DUMMY_CHECK, check_no: 1002 },
+    { ...DUMMY_CHECK, check_no: 1003 },
+  ];
+
+  try {
+    const pdfBuffer = await generateCheckPdf(account, checks, fields);
+    res.set({
+      'Content-Type': 'application/pdf',
+      'Content-Disposition': 'inline; filename="layout-preview.pdf"',
+      'Content-Length': pdfBuffer.length,
+    });
+    res.send(pdfBuffer);
+  } catch (err) {
+    console.error('Preview PDF error:', err);
+    res.status(500).json({ error: 'Preview generation failed.' });
+  }
+});
+
 module.exports = router;

src/routes/qbo-import.js

@@ -6,7 +6,7 @@ const multer  = require('multer');
 const os      = require('os');
 const fs      = require('fs');
 
-const upload = multer({ dest: os.tmpdir() });
+const upload = multer({ dest: os.tmpdir(), limits: { fileSize: 10 * 1024 * 1024 } });
 const { isEditorForAccount } = require('../middleware/auth');
 
 // ── CSV helpers ───────────────────────────────────────────────────────────────
@@ -165,6 +165,29 @@ function extractRows(text, type) {
 
 // ── Confirm helpers ───────────────────────────────────────────────────────────
 
+// Records come back from the client as JSON, not from the parsed file —
+// re-validate them server-side. Normalizes amount/check_no in place.
+// Returns an error string, or null if all records are valid.
+function validateRecords(records, type) {
+  for (const rec of records) {
+    if (!rec || typeof rec !== 'object') return 'Invalid record.';
+    if (!/^\d{4}-\d{2}-\d{2}$/.test(rec.date || '')) {
+      return 'Each record must have a date in YYYY-MM-DD format.';
+    }
+    const amount = Number(rec.amount);
+    if (!isFinite(amount) || amount <= 0) {
+      return 'Each record amount must be a positive number.';
+    }
+    rec.amount = Math.round(amount * 100) / 100;
+    if (type === 'checks' && rec.check_no !== null && rec.check_no !== undefined) {
+      const n = parseInt(rec.check_no, 10);
+      if (!Number.isInteger(n) || n < 1) return 'Check numbers must be positive integers.';
+      rec.check_no = n;
+    }
+  }
+  return null;
+}
+
 function confirmChecks(db, records, account_id) {
   const existing = new Set(
     db.prepare('SELECT check_no FROM checks WHERE account_id = ?').all(account_id).map(r => r.check_no)
@@ -312,6 +335,8 @@ router.post('/confirm', express.json(), (req, res) => {
   if (records.length > 1000) {
     return res.status(400).json({ error: 'Cannot import more than 1000 records at a time.' });
   }
+  const validationError = validateRecords(records, type);
+  if (validationError) return res.status(400).json({ error: validationError });
 
   const db = require('../db/database');
   try {

src/routes/users.js

@@ -11,7 +11,7 @@ const { validatePassword } = require('./auth');
 router.use(requireAuth, requireAdmin);
 
 function userWithAccounts(id) {
-  const user = db.prepare('SELECT id, username, email, role, created_at FROM users WHERE id = ?').get(id);
+  const user = db.prepare('SELECT id, username, email, role, oidc_sub, oidc_issuer, created_at FROM users WHERE id = ?').get(id);
   if (!user) return null;
   user.accounts = db.prepare('SELECT account_id, role FROM user_accounts WHERE user_id = ?').all(id);
   return user;
@@ -19,7 +19,7 @@ function userWithAccounts(id) {
 
 // GET /api/users
 router.get('/', (req, res) => {
-  const users = db.prepare('SELECT id, username, email, role, created_at FROM users ORDER BY id ASC').all();
+  const users = db.prepare('SELECT id, username, email, role, oidc_sub, oidc_issuer, created_at FROM users ORDER BY id ASC').all();
   users.forEach(u => {
     u.accounts = db.prepare('SELECT account_id, role FROM user_accounts WHERE user_id = ?').all(u.id);
   });
@@ -57,60 +57,86 @@ router.post('/', async (req, res) => {
 
 // PUT /api/users/:id
 router.put('/:id', async (req, res) => {
-  const user = db.prepare('SELECT id, role FROM users WHERE id = ?').get(req.params.id);
+  const userId = parseInt(req.params.id, 10);
+  const user = db.prepare('SELECT id, role FROM users WHERE id = ?').get(userId);
   if (!user) return res.status(404).json({ error: 'User not found.' });
 
-  const { username, password, role, accounts, email } = req.body;
+  const { username, password, role, accounts, email, oidc_sub, oidc_issuer } = req.body;
 
+  // ── Validate everything before writing anything ──
   if (role && !['admin', 'editor', 'viewer'].includes(role)) {
     return res.status(400).json({ error: 'Invalid role.' });
   }
+  if (role && role !== 'admin' && user.role === 'admin') {
+    const { n } = db.prepare("SELECT COUNT(*) AS n FROM users WHERE role = 'admin' AND id != ?").get(userId);
+    if (n === 0) return res.status(400).json({ error: 'Cannot demote the last admin.' });
+  }
+  if (password) {
+    const pwErr = validatePassword(password);
+    if (pwErr) return res.status(400).json({ error: pwErr });
+  }
 
-  if (username && username.trim() !== '') {
+  let newSub, newIssuer;
+  if (oidc_sub !== undefined) {
+    newSub    = oidc_sub    ? oidc_sub.trim()    : null;
+    newIssuer = oidc_issuer ? oidc_issuer.trim() : null;
+    if (newSub && !newIssuer) {
+      return res.status(400).json({ error: 'OIDC issuer is required when setting OIDC subject.' });
+    }
+    if (newSub) {
+      const existing = db.prepare(
+        'SELECT id FROM users WHERE oidc_issuer = ? AND oidc_sub = ? AND id != ?'
+      ).get(newIssuer, newSub, userId);
+      if (existing) return res.status(409).json({ error: 'This OIDC identity is already linked to another user.' });
+    }
+  }
+
+  const passwordHash = password ? await bcrypt.hash(password, 12) : null;
+
+  // ── Apply all changes atomically ──
   try {
+    db.transaction(() => {
+      if (username && username.trim() !== '') {
         db.prepare("UPDATE users SET username = ?, updated_at = datetime('now') WHERE id = ?")
-        .run(username.trim(), req.params.id);
+          .run(username.trim(), userId);
+      }
+      if (role) {
+        db.prepare("UPDATE users SET role = ?, updated_at = datetime('now') WHERE id = ?")
+          .run(role, userId);
+      }
+      if (email !== undefined) {
+        db.prepare("UPDATE users SET email = ?, updated_at = datetime('now') WHERE id = ?")
+          .run(email ? email.trim() : null, userId);
+      }
+      if (passwordHash) {
+        db.prepare("UPDATE users SET password_hash = ?, updated_at = datetime('now') WHERE id = ?")
+          .run(passwordHash, userId);
+      }
+      if (oidc_sub !== undefined) {
+        db.prepare("UPDATE users SET oidc_sub = ?, oidc_issuer = ?, updated_at = datetime('now') WHERE id = ?")
+          .run(newSub, newSub ? newIssuer : null, userId);
+      }
+      if (Array.isArray(accounts)) {
+        db.prepare('DELETE FROM user_accounts WHERE user_id = ?').run(userId);
+        const effectiveRole = role || user.role;
+        if (effectiveRole !== 'admin' && accounts.length > 0) {
+          const stmt = db.prepare('INSERT OR IGNORE INTO user_accounts (user_id, account_id, role) VALUES (?, ?, ?)');
+          accounts.forEach(a => stmt.run(userId, a.id, a.role === 'editor' ? 'editor' : 'viewer'));
+        }
+      }
+      // If role or account assignments changed, invalidate all active sessions for
+      // this user so the new permissions take effect immediately.
+      if (role || Array.isArray(accounts)) {
+        db.prepare("DELETE FROM sessions WHERE CAST(json_extract(sess, '$.userId') AS INTEGER) = ?")
+          .run(userId);
+      }
+    })();
   } catch (err) {
     if (err.message.includes('UNIQUE')) return res.status(409).json({ error: 'Username already taken.' });
     throw err;
   }
-  }
 
-  if (role) {
-    db.prepare("UPDATE users SET role = ?, updated_at = datetime('now') WHERE id = ?")
-      .run(role, req.params.id);
-  }
-
-  if (email !== undefined) {
-    db.prepare("UPDATE users SET email = ?, updated_at = datetime('now') WHERE id = ?")
-      .run(email ? email.trim() : null, req.params.id);
-  }
-
-  if (password) {
-    const pwErr = validatePassword(password);
-    if (pwErr) return res.status(400).json({ error: pwErr });
-    const hash = await bcrypt.hash(password, 12);
-    db.prepare("UPDATE users SET password_hash = ?, updated_at = datetime('now') WHERE id = ?")
-      .run(hash, req.params.id);
-  }
-
-  if (Array.isArray(accounts)) {
-    db.prepare('DELETE FROM user_accounts WHERE user_id = ?').run(req.params.id);
-    const effectiveRole = role || user.role;
-    if (effectiveRole !== 'admin' && accounts.length > 0) {
-      const stmt = db.prepare('INSERT OR IGNORE INTO user_accounts (user_id, account_id, role) VALUES (?, ?, ?)');
-      accounts.forEach(a => stmt.run(req.params.id, a.id, a.role === 'editor' ? 'editor' : 'viewer'));
-    }
-  }
-
-  // If role or account assignments changed, invalidate all active sessions for this user
-  // so the new permissions take effect immediately rather than at session expiry.
-  if (role || Array.isArray(accounts)) {
-    db.prepare("DELETE FROM sessions WHERE CAST(json_extract(sess, '$.userId') AS INTEGER) = ?")
-      .run(parseInt(req.params.id, 10));
-  }
-
-  res.json(userWithAccounts(req.params.id));
+  res.json(userWithAccounts(userId));
 });
 
 // DELETE /api/users/:id

src/services/depositPdfService.js

@@ -44,7 +44,7 @@ const SL = {
   cX: 0.65,
 
   // ── Depositor block ───────────────────────────────────────────────────────
-  depositorY: 0.28,   // Y of company name (first depositor line)
+  depositorY: 0.42,   // Y of company name (first depositor line)
 
   // ── Date ─────────────────────────────────────────────────────────────────
   dateY:      1.38,   // Y of DATE label
@@ -87,8 +87,8 @@ const SL = {
   checkCountValY:   6.1,    // check count value start
 
   // ── Colours ───────────────────────────────────────────────────────────────
-  bgLineColor:   '#888888',
-  bgLabelColor:  '#444444',
+  bgLineColor:   '#333333',
+  bgLabelColor:  '#111111',
   bgHeaderColor: '#000000',
 };
 
@@ -238,7 +238,17 @@ function generateDepositSlip(account, deposit, items) {
     const depositTotal = subTotal - (deposit.cash_back || 0);
     const checkCount   = items.length;
 
-    const totalRows  = SL.firstCheckRow + SL.maxChecks;
+    // Split items: first 30 on front, up to 30 more on back
+    const frontItems  = items.slice(0, SL.maxChecks);
+    const backItems   = items.slice(SL.maxChecks, SL.maxChecks * 2);
+    const hasBackPage = backItems.some(it => (it.amount || 0) > 0 || it.check_no || it.payee);
+    const backTotal   = hasBackPage ? backItems.reduce((s, i) => s + (i.amount || 0), 0) : 0;
+
+    // When back page exists, add one extra row on front for "FROM REVERSE"
+    const fromReverseRow = hasBackPage ? SL.firstCheckRow + SL.maxChecks : null;
+    const totalRows  = fromReverseRow != null
+      ? SL.firstCheckRow + SL.maxChecks + 1
+      : SL.firstCheckRow + SL.maxChecks;
     const totalRowY_ = rowTopY(totalRows);
     const gridBottom = totalRowY_ + SL.rowH;
 
@@ -304,7 +314,7 @@ function generateDepositSlip(account, deposit, items) {
     doc.text('TOTAL $', SL.cX * PT, rowY(totalRows) * PT - 5, { lineBreak: false });
 
     // Top disclaimer (above grid)
-    doc.font('Helvetica').fontSize(5).fillColor('#666666')
+    doc.font('Helvetica').fontSize(5).fillColor('#333333')
        .text(
          'DEPOSITS MAY NOT BE AVAILABLE FOR IMMEDIATE WITHDRAWAL',
          SL.cX * PT, SL.disclaimerY * PT,
@@ -312,7 +322,7 @@ function generateDepositSlip(account, deposit, items) {
        );
 
     // Bottom disclaimer (below grid)
-    doc.font('Helvetica').fontSize(5).fillColor('#666666')
+    doc.font('Helvetica').fontSize(5).fillColor('#333333')
        .text(
          'Checks and other items are received for deposit subject to the provisions of the Uniform Commercial Code or any applicable collection agreements.',
          SL.cX * PT, (gridBottom + 0.05) * PT,
@@ -321,7 +331,7 @@ function generateDepositSlip(account, deposit, items) {
 
     // DEPOSIT TICKET header
     doc.font('Helvetica-Bold').fontSize(9).fillColor(SL.bgHeaderColor)
-       .text('D E P O S I T   T I C K E T', SL.cX * PT, 0.08 * PT,
+       .text('D E P O S I T   T I C K E T', SL.cX * PT, 0.20 * PT,
              { width: (SL.W - SL.cX - 0.05) * PT, align: 'center', lineBreak: false });
 
     // ── Depositor block — account info, then bank info stacked below ────────
@@ -368,26 +378,33 @@ function generateDepositSlip(account, deposit, items) {
 
     function drawAmountRow(amount, rowIdx) {
       const y = (rowY(rowIdx) - 0.015) * PT;
-      doc.font('Courier').fontSize(8).fillColor('#000000');
+      doc.font('Courier-Bold').fontSize(8).fillColor('#000000');
       drawDigitAmount(doc, amount, dollarsRightX, y);
     }
 
     drawAmountRow(deposit.currency || 0, SL.currencyRow);
     drawAmountRow(deposit.coin     || 0, SL.coinRow);
 
-    items.slice(0, SL.maxChecks).forEach((item, i) => {
+    frontItems.forEach((item, i) => {
       const r = SL.firstCheckRow + i;
       const y = (rowY(r) - 0.015) * PT;
       if (item.check_no) {
-        doc.font('Courier').fontSize(7).fillColor('#000000')
+        doc.font('Courier-Bold').fontSize(7).fillColor('#000000')
            .text(String(item.check_no).slice(0, 8),
-                 (SL.cX + 0.16) * PT, y,
+                 (SL.cX + 0.28) * PT, y,
                  { width: SL.checkNoW * PT, lineBreak: false });
       }
       drawAmountRow(item.amount || 0, r);
     });
 
-    drawAmountRow(checksTotal, totalRows);
+    // "FROM REVERSE" row carries back-page subtotal onto the front
+    if (fromReverseRow != null) {
+      doc.font('Courier').fontSize(6).fillColor(SL.bgLabelColor)
+         .text('FROM REVERSE', SL.cX * PT, rowY(fromReverseRow) * PT - 4, { lineBreak: false });
+      drawAmountRow(backTotal, fromReverseRow);
+    }
+
+    drawAmountRow(depositTotal, totalRows);
 
     // ── Rotated left strip elements ─────────────────────────────────────────
     // All elements use rotate(90): text flows downward on the page, which reads
@@ -440,10 +457,124 @@ function generateDepositSlip(account, deposit, items) {
 
     doc.restore(); // end slip position translate
 
+    if (hasBackPage) {
+      doc.addPage();
+      renderDepositBackPage(doc, backItems, backTotal);
+    }
+
     doc.end();
   });
 }
 
+// ── Back page renderer ────────────────────────────────────────────────────────
+
+function renderDepositBackPage(doc, backItems, backTotal) {
+  // Same slip position and width as front (slipX=0, W=3.375").
+  // No left strip elements; grid starts near the top.
+  // Vertically center the grid on the 8.5" page.
+  // Grid height = (checksRow + maxChecks + 1 TOTAL row + 1 border) * rowH = 33 * 0.175 = 5.775"
+  // Allow ~0.45" above grid for title + column headers; remainder splits top/bottom.
+  const BK_GRID_HEIGHT = (1 + SL.maxChecks + 1 + 1) * SL.rowH; // 33 rows
+  const BK_TITLE_AREA  = 0.45;
+  const BK_GRID_TOP    = (SL.H - BK_GRID_HEIGHT - BK_TITLE_AREA) / 2 + BK_TITLE_AREA;
+  const BK_TITLE_Y     = (SL.H - BK_GRID_HEIGHT - BK_TITLE_AREA) / 2;
+  const BK = {
+    gridTop:   BK_GRID_TOP,
+    titleY:    BK_TITLE_Y,
+    checksRow: 0,
+    firstRow:  1,
+    maxChecks: SL.maxChecks,  // 30
+  };
+  const totalRows  = BK.firstRow + BK.maxChecks;  // "TOTAL $" row index
+
+  const bkRowTopY = r => BK.gridTop + r * SL.rowH;
+  const bkRowY    = r => BK.gridTop + r * SL.rowH + SL.rowH * 0.7;
+
+  const gridTopPt = bkRowTopY(0) * PT;
+  const gridBotPt = (bkRowTopY(totalRows) + SL.rowH) * PT;
+
+  doc.save();
+  doc.translate(SL.slipX * PT, 0);
+
+  // ── Title ─────────────────────────────────────────────────────────────────
+  doc.font('Helvetica-Bold').fontSize(9).fillColor(SL.bgHeaderColor)
+     .text('A D D I T I O N A L   C H E C K   L I S T I N G',
+           SL.cX * PT, BK.titleY * PT,
+           { width: (SL.W - SL.cX - 0.05) * PT, align: 'center', lineBreak: false });
+
+  // ── Grid verticals (same column positions as front) ───────────────────────
+  const dollarsRightX  = SL.colCentsR - SL.colCentsW - SL.colDollarSep;
+  const dividerX       = (dollarsRightX - 7 * SL.digitW) * PT;
+  const dollarsCentsX  = dollarsRightX * PT;
+
+  doc.moveTo(dividerX,       gridTopPt).lineTo(dividerX,       gridBotPt).lineWidth(0.5).stroke(SL.bgLineColor);
+  doc.moveTo(dollarsCentsX,  gridTopPt).lineTo(dollarsCentsX,  gridBotPt).lineWidth(0.5).stroke(SL.bgLineColor);
+  doc.moveTo(SL.colCentsR * PT, gridTopPt).lineTo(SL.colCentsR * PT, gridBotPt).lineWidth(0.5).stroke(SL.bgLineColor);
+
+  // Column headers
+  doc.font('Helvetica').fontSize(6).fillColor(SL.bgLabelColor);
+  const hdrY = (BK.gridTop - 0.10) * PT;
+  doc.text('DOLLARS', dollarsCentsX - 7 * SL.digitW * PT, hdrY,
+           { width: 7 * SL.digitW * PT, align: 'center', lineBreak: false });
+  doc.text('CENTS', (SL.colCentsR - SL.colCentsW) * PT, hdrY,
+           { width: SL.colCentsW * PT, align: 'center', lineBreak: false });
+
+  // "CHECKS:" header label
+  doc.font('Courier').fontSize(7).fillColor(SL.bgLabelColor)
+     .text('CHECKS:', SL.cX * PT, bkRowY(BK.checksRow) * PT - 5, { lineBreak: false });
+
+  // ── Horizontal grid lines ─────────────────────────────────────────────────
+  for (let r = 0; r <= totalRows + 1; r++) {
+    const y = bkRowTopY(r) * PT;
+    const isOuter = r === 0 || r === totalRows + 1;
+    doc.moveTo(SL.stripX * PT, y).lineTo(SL.colCentsR * PT, y)
+       .lineWidth(isOuter ? 0.75 : 0.3).stroke(SL.bgLineColor);
+  }
+
+  // ── Row numbers (continuing from front: 31–60) ────────────────────────────
+  doc.font('Courier').fontSize(6).fillColor(SL.bgLabelColor);
+  for (let i = 0; i < BK.maxChecks; i++) {
+    const r = BK.firstRow + i;
+    doc.text(String(SL.maxChecks + i + 1), SL.cX * PT, bkRowY(r) * PT - 4,
+             { width: 14, align: 'right', lineBreak: false });
+  }
+
+  // ── "TOTAL $" footer label ────────────────────────────────────────────────
+  doc.font('Courier-Bold').fontSize(7).fillColor('#000000')
+     .text('T O T A L  $', SL.cX * PT, bkRowY(totalRows) * PT - 5, { lineBreak: false });
+
+  // ── "Forward to other side" in left strip (rotated) ───────────────────────
+  const fwdY = bkRowTopY(totalRows) + SL.rowH * 0.5;
+  doc.save();
+  doc.translate(SL.stripCenterX * PT, fwdY * PT);
+  doc.rotate(90);
+  doc.font('Helvetica').fontSize(6).fillColor(SL.bgLabelColor)
+     .text('Forward to other side', 0, 0, { lineBreak: false });
+  doc.restore();
+
+  // ── Amount data ───────────────────────────────────────────────────────────
+  backItems.forEach((item, i) => {
+    const r = BK.firstRow + i;
+    const y = (bkRowY(r) - 0.015) * PT;
+    if (item.check_no) {
+      doc.font('Courier-Bold').fontSize(7).fillColor('#000000')
+         .text(String(item.check_no).slice(0, 8),
+               (SL.cX + 0.28) * PT, y,
+               { width: SL.checkNoW * PT, lineBreak: false });
+    }
+    if ((item.amount || 0) > 0) {
+      doc.font('Courier-Bold').fontSize(8).fillColor('#000000');
+      drawDigitAmount(doc, item.amount, dollarsRightX, y);
+    }
+  });
+
+  // Back page total
+  doc.font('Courier-Bold').fontSize(8).fillColor('#000000');
+  drawDigitAmount(doc, backTotal, dollarsRightX, (bkRowY(totalRows) - 0.015) * PT);
+
+  doc.restore();
+}
+
 // ── Amount rendering helpers ──────────────────────────────────────────────────
 
 /**

src/services/pdfService.js

@@ -131,14 +131,22 @@ function generateCheckPdf(account, checks, fields) {
     const offX = (account.offset_right - account.offset_left);
     const offY = (account.offset_down - account.offset_up);
 
-    // Render checks in pages of 3; add a new page for each additional group
-    const pages = Math.ceil(checks.length / 3);
+    // Determine slot assignment based on check_position setting
+    const position = account.check_position || '3-per-page';
+    const SLOT_MAP = { top: 0, middle: 1, bottom: 2 };
+    const fixedSlot = SLOT_MAP[position]; // undefined for '3-per-page'
+    const checksPerPage = fixedSlot !== undefined ? 1 : 3;
+
+    const pages = Math.ceil(checks.length / checksPerPage);
     for (let page = 0; page < pages; page++) {
       if (page > 0) doc.addPage();
 
       for (let slot = 0; slot < 3; slot++) {
-      const check = checks[page * 3 + slot] || null;
-      const slotOriginY = slot * SLOT_HEIGHT_IN + (slot === 0 ? -0.25 : 0);
+      // For fixed-slot mode, only render in the designated slot
+      if (fixedSlot !== undefined && slot !== fixedSlot) continue;
+      const checkIndex = fixedSlot !== undefined ? page : page * 3 + slot;
+      const check = checks[checkIndex] || null;
+      const slotOriginY = slot * SLOT_HEIGHT_IN;
 
       // Helper: convert inches (relative to slot) to PDF points (absolute page)
       const pt = (xIn, yIn) => ({
@@ -227,17 +235,27 @@ function generateCheckPdf(account, checks, fields) {
       }
 
       // --- MICR line ---
+      // Anchor the second transit symbol (the 'A' after routing) at 2 59/64" from left.
+      // Routing extends left from that anchor; account + check extend right.
       const micrLine = formatMicrLine(account.routing_number, account.account_number, check.check_no);
-      const micrPos = pt(0.3, MICR_Y_IN);
+      const ANCHOR_IN = 2 + 59 / 64;
 
       if (hasMicrFont) {
-        doc.font('MICR').fontSize(12).fillColor('#000000')
-           .text(micrLine, micrPos.x, micrPos.y, { lineBreak: false });
+        doc.font('MICR').fontSize(12).fillColor('#000000');
       } else {
-        doc.font('Courier').fontSize(10).fillColor('#000000')
-           .text(micrLine, micrPos.x, micrPos.y, { lineBreak: false });
+        doc.font('Courier').fontSize(10).fillColor('#000000');
       }
 
+      // Prefix = everything up to and including the second 'A' (first A + routing + second A).
+      const secondA = micrLine.indexOf('A', 1) + 1;
+      const prefix = micrLine.slice(0, secondA);
+      const prefixWidthPts = doc.widthOfString(prefix);
+      const anchorXPts = (ANCHOR_IN + offX) * POINTS_PER_INCH;
+      const micrXPts = anchorXPts - prefixWidthPts;
+      const micrYPts = (slotOriginY + MICR_Y_IN + offY) * POINTS_PER_INCH;
+
+      doc.text(micrLine, micrXPts, micrYPts, { lineBreak: false });
+
       } // end slot loop
     } // end page loop