Add issue templates for bug reports and feature requests

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: Bug report
+about: Create a report to help us improve
+title: "[BUG]"
+labels: bug
+assignees: YoshihitoAso
+
+---
+
+## Describe the bug
+A clear and concise description of what the bug is.
+
+## Expected behavior
+A clear and concise description of what you expected to happen.
+
+## Additional context
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[FEATURE]"
+labels: enhancement
+assignees: YoshihitoAso
+
+---
+
+## Is your feature request related to a problem? Please describe.
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+## Describe the solution you'd like
+A clear and concise description of what you want to happen.
+
+## Describe alternatives you've considered
+A clear and concise description of any alternative solutions or features you've considered.
+
+## Additional context
+Add any other context or screenshots about the feature request here.

.github/auto_assign.yml

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+# Set addAssignees to 'author' to set the PR creator as the assignee.
+addAssignees: author
+
+# Set to true to add assignees to pull requests
+addReviewers: true
+
+# A list of reviewers to be added to pull requests (GitHub user name)
+reviewers:
+  - YoshihitoAso
+
+# A number of reviewers added to the pull request
+# Set 0 to add all the reviewers (default: 0)
+numberOfReviewers: 0
+
+runOnDraft: true

.github/dependabot.yml

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+version: 2
+updates:
+  - package-ecosystem: "uv"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+      day: "monday"
+      time: "00:00"
+    allow:
+      - dependency-name: "*"
+        dependency-type: "direct"
+    groups:
+      all-dependencies:
+        patterns:
+          - "*"
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    allow:
+      - dependency-name: "*"
+        dependency-type: "direct"
+    groups:
+      all-dependencies:
+        patterns:
+          - "*"
+
+  - package-ecosystem: docker-compose
+    directory: "/"
+    schedule:
+      interval: "monthly"
+    ignore:
+    - dependency-name: "*"
+      update-types: ["version-update:semver-major"]
+    groups:
+      all-dependencies:
+        patterns:
+          - "*"
+
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    allow:
+      - dependency-name: "*"
+        dependency-type: "direct"
+    groups:
+      all-dependencies:
+        patterns:
+          - "*"

.github/pull_request_template.md

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+## 📌 Description
+
+<!-- Please provide a clear and concise description of the changes. -->
+
+## ✅ Related Issues
+
+<!-- Link to related issues using "Fixes #issue_number" or "Closes #issue_number". -->
+- Close #
+
+## 🔄 Changes
+
+<!-- List the major changes in this PR. -->
+
+- 
+
+## 📌 Checklist
+
+- [ ] I have added tests where necessary.
+- [ ] I have updated the documentation where necessary.

.github/workflows/auto-assign.yml

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+name: Auto Assign
+on:
+  pull_request:
+    types: [opened, ready_for_review]
+
+jobs:
+  add-reviews:
+    permissions:
+      contents: read
+      pull-requests: write
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - uses: kentaro-m/auto-assign-action@f4648c0a9fdb753479e9e75fc251f507ce17bb7e # v2.0.0