chore(workflow): add AI-assisted workflow commands and configurations

Add comprehensive workflow commands for AI-assisted development:
- Claude commands: analyze, clarify, plan
- Kilocode workflows: full feature development lifecycle
- Opencode commands: specification and implementation workflows
- Roo MCP configuration for tool integration

Update .gitignore to exclude .astro build cache directories.

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

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

.specify/templates/plan-template.md

@@ -9,7 +9,7 @@
 1. Load feature spec from Input path
    → If not found: ERROR "No feature spec at {path}"
 2. Fill Technical Context (scan for NEEDS CLARIFICATION)
-   → Detect Project Type from context (web=frontend+backend, mobile=app+api)
+   → Detect Project Type from file system structure or context (web=frontend+backend, mobile=app+api)
    → Set Structure Decision based on project type
 3. Fill the Constitution Check section based on the content of the constitution document.
 4. Evaluate Constitution Check section below
@@ -18,7 +18,7 @@
    → Update Progress Tracking: Initial Constitution Check
 5. Execute Phase 0 → research.md
    → If NEEDS CLARIFICATION remain: ERROR "Resolve unknowns"
-6. Execute Phase 1 → contracts, data-model.md, quickstart.md, agent-specific template file (e.g., `CLAUDE.md` for Claude Code, `.github/copilot-instructions.md` for GitHub Copilot, `GEMINI.md` for Gemini CLI, `QWEN.md` for Qwen Code or `AGENTS.md` for opencode).
+6. Execute Phase 1 → contracts, data-model.md, quickstart.md, agent-specific template file (e.g., `CLAUDE.md` for Claude Code, `.github/copilot-instructions.md` for GitHub Copilot, `GEMINI.md` for Gemini CLI, `QWEN.md` for Qwen Code, or `AGENTS.md` for all other agents).
 7. Re-evaluate Constitution Check section
    → If new violations: Refactor design, return to Phase 1
    → Update Progress Tracking: Post-Design Constitution Check
@@ -63,8 +63,14 @@ specs/[###-feature]/
 ```
 
 ### Source Code (repository root)
+<!--
+  ACTION REQUIRED: Replace the placeholder tree below with the concrete layout
+  for this feature. Delete unused options and expand the chosen structure with
+  real paths (e.g., apps/admin, packages/something). The delivered plan must
+  not include Option labels.
+-->
 ```
-# Option 1: Single project (DEFAULT)
+# [REMOVE IF UNUSED] Option 1: Single project (DEFAULT)
 src/
 ├── models/
 ├── services/
@@ -76,7 +82,7 @@ tests/
 ├── integration/
 └── unit/
 
-# Option 2: Web application (when "frontend" + "backend" detected)
+# [REMOVE IF UNUSED] Option 2: Web application (when "frontend" + "backend" detected)
 backend/
 ├── src/
 │   ├── models/
@@ -91,15 +97,16 @@ frontend/
 │   └── services/
 └── tests/
 
-# Option 3: Mobile + API (when "iOS/Android" detected)
+# [REMOVE IF UNUSED] Option 3: Mobile + API (when "iOS/Android" detected)
 api/
 └── [same as backend above]
 
 ios/ or android/
-└── [platform-specific structure]
+└── [platform-specific structure: feature modules, UI flows, platform tests]
 ```
 
-**Structure Decision**: [DEFAULT to Option 1 unless Technical Context indicates web/mobile app]
+**Structure Decision**: [Document the selected structure and reference the real
+directories captured above]
 
 ## Phase 0: Outline & Research
 1. **Extract unknowns from Technical Context** above:
@@ -145,7 +152,7 @@ ios/ or android/
    - Quickstart test = story validation steps
 
 5. **Update agent file incrementally** (O(1) operation):
-   - Run `.specify/scripts/bash/update-agent-context.sh codex`
+   - Run `.specify/scripts/bash/update-agent-context.sh opencode`
      **IMPORTANT**: Execute it exactly as specified above. Do not add or remove any arguments.
    - If exists: Add only NEW tech from current plan
    - Preserve manual additions between markers