- Updated CI workflow to run `go vet` and `go test` for all modules on every push/PR.
- Implemented a `changes` job to rebuild only affected Docker images based on modified paths.
- Introduced caching for Docker builds to speed up subsequent runs by leveraging registry-based cache.
- Modified Dockerfiles for `ai-gateway`, `discord-bot`, `ha-gateway`, and `tts-gateway` to copy `go.mod` and `go.sum` files first, allowing for better caching of dependencies.
- Added `go.sum` file for `tts-gateway` to ensure proper dependency management.
- Ensured that `go mod download` is executed in the correct order to optimize layer caching.
- Implemented new gRPC service `AIService` in `proto/ai/v1/ai.proto` for handling natural language queries.
- Generated Go code for the gRPC service and messages in `gen/ai/v1/`.
- Created `services/ai-gateway/` directory structure with necessary files for the service.
- Added configuration loading and structured logging.
- Implemented domain logic for intent parsing and interaction with Home Assistant.
- Established outbound adapters for Ollama and Home Assistant with mTLS support.
- Updated `go.work` to include the new service and maintain existing dependencies.
- Modified `discord-bot` to use the new `ai-gateway` for AI interactions.
- Added deployment manifest for Kubernetes and CI/CD configuration for building and deploying the service.
