ci: add Dependabot config and issue templates

Add weekly Dependabot updates for pip, Docker, and GitHub Actions.
Add issue templates for bug reports, feature requests, documentation,
and general feedback.

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+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

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+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

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+--
+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

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+---
+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

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+---
+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.

.github/dependabot.yml

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+# Dependabot version updates
+# https://docs.github.com/code-security/dependabot/dependabot-version-updates/configuration-options-for-the-dependabot.yml-file
+
+version: 2
+updates:
+
+  # Python dependencies — requirements.txt
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    labels:
+      - "dependencies"
+
+  # Docker base image — Dockerfile
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    labels:
+      - "dependencies"
+
+  # GitHub Actions workflow dependencies
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+    labels:
+      - "dependencies"
+      - "ci"