* Fix workflow triggers to use 'main' branch instead of 'master'
* Switch to semantic version tags for GitHub Actions instead of SHAs for better maintainability
* Fix golangci-lint by adding go mod tidy and specifying paths ./... for linting
* feat: Restructure workflows following Single Responsibility Principle
- Remove old monolithic workflows (ci.yml, ci-cd.yml, cd.yml)
- Add focused workflows: lint.yml, test.yml, build.yml, security.yml, docker-build.yml, deploy.yml
- Each workflow has a single, clear responsibility
- Follow 2025 best practices with semantic versioning, OIDC auth, build attestations
- Add comprehensive README.md with workflow documentation
- Configure Dependabot for automated dependency updates
Workflows now run independently and can be triggered separately for better CI/CD control.
* fix: Resolve CI/CD workflow failures and GraphQL integration test issues
- Fix Application struct mismatch in application_builder.go
- Add global config.Cfg variable and BleveIndexPath field
- Regenerate GraphQL code to fix ProcessArgField errors
- Add search.InitBleve() call in main.go
- Fix all errcheck issues (12 total) in main.go files and test files
- Fix staticcheck issues (deprecated handler.NewDefaultServer, tagged switch)
- Remove all unused code (50 unused items including mock implementations)
- Fix GraphQL 'transport not supported' error in integration tests
- Add comprehensive database cleanup for integration tests
- Update GraphQL server setup with proper error presenter
* feat: Complete backend CI/CD workflow setup
- Add comprehensive GitHub Actions workflows for Go backend
- Build workflow with binary compilation and attestation
- Test workflow with coverage reporting and race detection
- Lint workflow with golangci-lint and security scanning
- Docker build workflow with multi-architecture support
- Deploy workflow for production deployment
- Security workflow with vulnerability scanning
- All workflows follow Single Responsibility Principle
- Use semantic versioning and latest action versions
- Enable security features: OIDC auth, attestations, minimal permissions
* fix: correct Go build path to ./cmd/api
- Fix build workflow to target ./cmd/api instead of ./cmd
- The main.go file is located in cmd/api/ subdirectory
* fix: correct Dockerfile build path to ./cmd/api
- Fix Docker build to target ./cmd/api instead of root directory
- The main.go file is located in cmd/api/ subdirectory
This commit addresses all the high-priority tasks outlined in the TASKS.md file, significantly improving the application's observability, completing key features, and refactoring critical parts of the codebase.
### Observability
- **Centralized Logging:** Implemented a new structured, context-aware logging system using `zerolog`. A new logging middleware injects request-specific information (request ID, user ID, trace ID) into the logger, and all application logging has been refactored to use this new system.
- **Prometheus Metrics:** Added Prometheus metrics for database query performance by creating a GORM plugin that automatically records query latency and totals.
- **OpenTelemetry Tracing:** Fully instrumented all application services in `internal/app` and data repositories in `internal/data/sql` with OpenTelemetry tracing, providing deep visibility into application performance.
### Features
- **Analytics:** Implemented like, comment, and bookmark counting. The respective command handlers now call the analytics service to increment counters when these actions are performed.
- **Enrichment Tool:** Built a new, extensible `enrich` command-line tool to fetch data from external sources. The initial implementation enriches author data using the Open Library API.
### Refactoring & Fixes
- **Decoupled Testing:** Refactored the testing utilities in `internal/testutil` to be database-agnostic, promoting the use of mock-based unit tests and improving test speed and reliability.
- **Build Fixes:** Resolved numerous build errors, including a critical import cycle between the logging, observability, and authentication packages.
- **Search Service:** Fixed the search service integration by implementing the `GetWorkContent` method in the localization service, allowing the search indexer to correctly fetch and index work content.
