Add full project structure: backend, frontend, Docker, and CI workflows

- Organize backend into src/ (routes/, services/, db/) per package.json entrypoint
- Add migrations/import-mdb.js for one-time .mdb → SQLite migration
- Add public/ frontend: check ledger table, slide-in new/edit panel, PDF generation
- Add docker/Dockerfile and docker-compose.yml for self-hosted deployment
- Add .github/workflows: Docker Hub build+push on main/tags, TODO→Issues scanner
- Add GnuMICR font files (GPL-2.0) for MICR E-13B line rendering

fonts/CHANGELOG

@@ -0,0 +1,26 @@
+
+GnuMICR Changelog
+
+December 10, 2003
+0.30 Re-generated the TTF font using pfaedit (so I can recreate)
+     Generated otf font file using pfaedit
+     Added StdVW to StemSnapV array (Thanks t1lint!)
+     Fixed typo IsFixedPitch -> isFixedPitch
+     Rebuilt pfa and pfb with t1utils v. 1.29
+     Removed blather about distribution w/ a commercial
+	application, that's not consistent w/ the GPL.
+     Updated contact information.
+
+August 12, 2000
+0.22 Included a converted TTF font (also untested)
+
+August 2, 2000
+0.21 Added Unique ID number for the font
+     Added some copyright information
+
+July 2, 2000
+0.2  Recompiled fonts with 64 char lines (oops)
+
+July 1, 2000
+0.1  First public release
+