Implement mirrorstack app module init command

[I-am-nothing]

Description

The mirrorstack app module init <name> command exists but needs improvements to match V2 module structure:

• SDK imports are commented out
• Templates should use modulesdk types from app-module-sdk
• Generated code should be compilable
• Missing mcp/ directory
• Missing test files

Acceptance Criteria

• Generated module compiles: cd {name}/api && go build ./...
• Uses github.com/mirrorstack-ai/app-module-sdk
• mirrorstack.yaml follows V2 spec (platform/app structure)
• mcp/ directory with stub files
• MIRRORSTACK.md with proper template
• Test files generated (_test.go, .test.tsx)

[I-am-nothing]

🤖 PM Proposal

Analysis:

• Complexity: complex
• Effort: M
• Suggested agent: Agent Backend
• Estimated deadline: 2026-03-18 17:00 (UTC+8)

Proposed sub-tasks:

1. Uncomment SDK imports & make templates compilable → mirrorstack-cli → Agent Backend

   • Uncomment require github.com/mirrorstack-ai/app-module-sdk in generated go.mod
   • Uncomment modulesdk imports in module.go and cmd/main.go
   • Wire up modulesdk.ExtractContext middleware, modulesdk.Start() bootstrap, and modulesdk.WriteJSON/error helpers in handlers
   • Ensure go build ./... passes on generated output

2. Update mirrorstack.yaml to V2 spec → mirrorstack-cli → Agent Backend

   • Add events, schedules, setup, resources sections (matching ModuleManifest struct from SDK)
   • Ensure platform/app structure matches SDK's PlatformUI/AppUI types

3. Add mcp/ directory with stub files → mirrorstack-cli → Agent Backend

   • Create mcp/ directory in scaffold
   • Add stub mcp/server.go (MCP tool/resource registration)
   • Add stub mcp/tools.go (example tool definitions)

4. Add test files → mirrorstack-cli → Agent Backend

   • api/module_test.go — unit test stub for module
   • api/handler/public_test.go — handler test stub using httptest
   • api/service/{name}_test.go — service test stub
   • web/platform/pages/{Title}Page.test.tsx — React component test
   • web/app/pages/{Title}Page.test.tsx — React component test

Files to modify:

• scaffold/templates.go — Update existing templates (uncomment SDK, add V2 YAML fields), add new template functions for mcp/ and test files
• scaffold/scaffold.go — Add mcp/ directory and test files to the Create() function's file list

Notes:

• All sub-tasks are in the same file set, so a single agent can handle them sequentially
• The generated go.mod needs chi and app-module-sdk as dependencies since the templates use both
• Test files should be minimal stubs that compile but demonstrate the testing pattern

To approve: Move this issue from Backlog → Todo on the project board.

[mirrorstack-bot]

🤖 PM Agent: Testing bot identity