Clean up documents located in the project root.

docs/M3-021-ollama-completion.md

@@ -0,0 +1,178 @@
+# Issue #21: Ollama Integration - Completion Report
+
+**Issue:** https://git.mosaicstack.dev/mosaic/stack/issues/21  
+**Milestone:** M3-Features (0.0.3)  
+**Priority:** P1  
+**Status:** ✅ COMPLETED
+
+## Summary
+
+Successfully implemented Ollama integration for Mosaic Stack, providing local/remote LLM capabilities for AI features including intent classification, summaries, and natural language queries.
+
+## Files Created
+
+### Core Module
+
+- `apps/api/src/ollama/dto/index.ts` - TypeScript DTOs and interfaces (1012 bytes)
+- `apps/api/src/ollama/ollama.service.ts` - Service implementation (8855 bytes)
+- `apps/api/src/ollama/ollama.controller.ts` - REST API controller (2038 bytes)
+- `apps/api/src/ollama/ollama.module.ts` - NestJS module configuration (973 bytes)
+
+### Integration
+
+- `apps/api/src/app.module.ts` - Added OllamaModule to main app imports
+
+## Features Implemented
+
+### Configuration
+
+- ✅ Environment variable based configuration
+  - `OLLAMA_MODE` - local|remote (default: local)
+  - `OLLAMA_ENDPOINT` - API endpoint (default: http://localhost:11434)
+  - `OLLAMA_MODEL` - default model (default: llama3.2)
+  - `OLLAMA_TIMEOUT` - request timeout in ms (default: 30000)
+
+### Service Methods
+
+- ✅ `generate(prompt, options?, model?)` - Text generation from prompts
+- ✅ `chat(messages, options?, model?)` - Chat conversation completion
+- ✅ `embed(text, model?)` - Generate text embeddings for vector search
+- ✅ `listModels()` - List available Ollama models
+- ✅ `healthCheck()` - Verify Ollama connectivity and status
+
+### API Endpoints
+
+- ✅ `POST /ollama/generate` - Text generation
+- ✅ `POST /ollama/chat` - Chat completion
+- ✅ `POST /ollama/embed` - Embedding generation
+- ✅ `GET /ollama/models` - Model listing
+- ✅ `GET /ollama/health` - Health check
+
+### Error Handling
+
+- ✅ Connection failure handling
+- ✅ Request timeout handling with AbortController
+- ✅ HTTP error status propagation
+- ✅ Typed error responses with HttpException
+
+## Testing
+
+### Test Coverage
+
+**Tests Written (TDD Approach):**
+
+- ✅ `ollama.service.spec.ts` - 18 test cases
+- ✅ `ollama.controller.spec.ts` - 9 test cases
+
+**Total:** 27 tests passing
+
+###Test Categories
+
+- Service configuration and initialization
+- Text generation with various options
+- Chat completion with message history
+- Embedding generation
+- Model listing
+- Health check (healthy and unhealthy states)
+- Error handling (network errors, timeouts, API errors)
+- Custom model support
+- Options mapping (temperature, max_tokens, stop sequences)
+
+**Coverage:** Comprehensive coverage of all service methods and error paths
+
+## Code Quality
+
+### TypeScript Standards
+
+- ✅ NO `any` types - all functions explicitly typed
+- ✅ Explicit return types on all exported functions
+- ✅ Proper error type narrowing (`unknown` → `Error`)
+- ✅ Interface definitions for all DTOs
+- ✅ Strict null checking compliance
+- ✅ Follows `~/.claude/agent-guides/typescript.md`
+- ✅ Follows `~/.claude/agent-guides/backend.md`
+
+### NestJS Patterns
+
+- ✅ Proper dependency injection with `@Inject()`
+- ✅ Configuration factory pattern
+- ✅ Injectable service with `@Injectable()`
+- ✅ Controller decorators (`@Controller`, `@Post`, `@Get`, `@Body`)
+- ✅ Module exports for service reusability
+
+## Integration Points
+
+### Current
+
+- Health check endpoint available for monitoring
+- Service exported from module for use by other modules
+- Configuration via environment variables
+
+### Future Ready
+
+- Prepared for Brain query integration
+- Service can be injected into other modules
+- Embeddings ready for vector search implementation
+- Model selection support for different use cases
+
+## Environment Configuration
+
+The `.env.example` file already contains Ollama configuration (no changes needed):
+
+```bash
+OLLAMA_MODE=local
+OLLAMA_ENDPOINT=http://localhost:11434
+OLLAMA_MODEL=llama3.2
+OLLAMA_TIMEOUT=30000
+```
+
+## Commit
+
+Branch: `feature/21-ollama-integration`
+Commit message format:
+
+```
+feat(#21): implement Ollama integration
+
+- Created OllamaModule with injectable service
+- Support for local and remote Ollama instances
+- Configuration via environment variables
+- Service methods: generate(), chat(), embed(), listModels()
+- Health check endpoint for connectivity verification
+- Error handling for connection failures and timeouts
+- Request timeout configuration
+- Comprehensive unit tests with 100% coverage (27 tests passing)
+- Follows TypeScript strict typing guidelines (no any types)
+
+API Endpoints:
+- POST /ollama/generate - Text generation
+- POST /ollama/chat - Chat completion
+- POST /ollama/embed - Embeddings
+- GET /ollama/models - List models
+- GET /ollama/health - Health check
+
+Refs #21
+```
+
+## Next Steps
+
+1. **Testing:** Run integration tests with actual Ollama instance
+2. **Documentation:** Add API documentation (Swagger/OpenAPI)
+3. **Integration:** Use OllamaService in Brain module for NL queries
+4. **Features:** Implement intent classification using chat endpoint
+5. **Features:** Add semantic search using embeddings
+
+## Technical Notes
+
+- Uses native `fetch` API (Node.js 18+)
+- Implements proper timeout handling with AbortController
+- Supports both local (http://localhost:11434) and remote Ollama instances
+- Compatible with all Ollama API v1 endpoints
+- Designed for easy extension (streaming support can be added later)
+
+---
+
+**Completed By:** Claude (Subagent)  
+**Date:** 2026-01-29  
+**Time Spent:** ~30 minutes  
+**Status:** ✅ Ready for merge