chore: add issue templates with integration criteria (refs #2)

Adds Gitea issue templates to prevent missed integration points:
- feature.yaml: Includes Integration Criteria section for navigation,
  routing, and state management requirements
- bug.yaml: Structured bug reporting with platform selection
- chore.yaml: Technical debt and maintenance tasks

The Integration Criteria section ensures features specify:
- Desktop sidebar / mobile nav placement
- Route paths and default landing page
- Mobile screen type in navigation store

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.gitea/issue_template/feature.yaml

@@ -0,0 +1,109 @@
+name: Feature Request
+about: Propose a new feature for MotoVaultPro
+title: "[Feature]: "
+labels:
+  - type/feature
+  - status/backlog
+body:
+  - type: markdown
+    attributes:
+      value: |
+        ## Feature Request
+        Use this template to propose new features. Be specific about requirements and integration points.
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Problem / User Need
+      description: What problem does this feature solve? Who needs it and why?
+      placeholder: "As a [user type], I want to [goal] so that [benefit]..."
+    validations:
+      required: true
+
+  - type: textarea
+    id: solution
+    attributes:
+      label: Proposed Solution
+      description: Describe the feature and how it should work
+      placeholder: "When the user does X, the system should Y..."
+    validations:
+      required: true
+
+  - type: textarea
+    id: non-goals
+    attributes:
+      label: Non-goals / Out of Scope
+      description: What is explicitly NOT part of this feature?
+      placeholder: |
+        - Advanced analytics (future enhancement)
+        - Data export functionality
+        - etc.
+    validations:
+      required: false
+
+  - type: textarea
+    id: acceptance-criteria
+    attributes:
+      label: Acceptance Criteria (Feature Behavior)
+      description: What must be true for this feature to be complete?
+      placeholder: |
+        - [ ] User can see X
+        - [ ] System displays Y when Z
+        - [ ] Works on mobile viewport (320px) with touch-friendly targets
+        - [ ] Works on desktop viewport (1920px) with keyboard navigation
+    validations:
+      required: true
+
+  - type: textarea
+    id: integration-criteria
+    attributes:
+      label: Integration Criteria (App Flow)
+      description: How does this feature integrate into the app? This prevents missed navigation/routing.
+      value: |
+        ### Navigation
+        - [ ] Desktop sidebar: [not needed / add as item #X / replace existing]
+        - [ ] Mobile bottom nav: [not needed / add to left/right items]
+        - [ ] Mobile hamburger menu: [not needed / add to menu items]
+
+        ### Routing
+        - [ ] Desktop route path: `/garage/[feature-name]`
+        - [ ] Is this the default landing page after login? [yes / no]
+        - [ ] Replaces existing placeholder/route: [none / specify what]
+
+        ### State Management
+        - [ ] Mobile screen type needed in navigation store? [yes / no]
+        - [ ] New Zustand store needed? [yes / no]
+    validations:
+      required: true
+
+  - type: textarea
+    id: implementation-notes
+    attributes:
+      label: Implementation Notes
+      description: Technical hints, existing patterns to follow, files to modify
+      placeholder: |
+        - Current placeholder: frontend/src/App.tsx lines X-Y
+        - Create new feature directory: frontend/src/features/[name]/
+        - Backend APIs already exist for X, Y, Z
+        - Follow pattern in: frontend/src/features/vehicles/
+    validations:
+      required: false
+
+  - type: textarea
+    id: test-plan
+    attributes:
+      label: Test Plan
+      description: How will this feature be tested?
+      placeholder: |
+        **Unit tests:**
+        - Component tests for X, Y, Z
+
+        **Integration tests:**
+        - Test data fetching with mocked API responses
+
+        **Manual testing:**
+        - Verify mobile layout at 320px, 768px viewports
+        - Verify desktop layout at 1920px viewport
+        - Test with 0 items, 1 item, 10+ items
+    validations:
+      required: false