feat(db): integrate DuckDB connection and create projects table

[DaxServer]

No description provided.

[coderabbitai]

📝 Walkthrough

Summary by CodeRabbit

• New Features
  • Added backend support for project metadata storage and retrieval using a new database and API endpoint.
  • Introduced a new API route to fetch all projects with their details.
• Chores
  • Updated backend dependencies to include DuckDB support.
  • Improved backend database initialization and lifecycle management.
  • Enhanced .gitignore to exclude database files.
• Tests
  • Added comprehensive tests for project API handlers and database management.
• Documentation
  • Added TypeScript declarations for auto-imported frontend APIs to streamline development.

Walkthrough

This update introduces a DuckDB-backed project metadata store to the backend, including database initialization, connection management, and schema setup. New API endpoints and handler logic for retrieving project metadata are added, along with corresponding tests. The frontend receives auto-imported TypeScript declarations for common Vue and Pinia APIs, and project-related files are now ignored in .gitignore.

Changes

File(s)	Change Summary
.gitignore	Added openrefine.db* pattern to ignore DuckDB database files.
backend/package.json	Added dependency: @duckdb/node-api@^1.3.0-alpha.21.
backend/src/db.ts	New module for DuckDB connection lifecycle: initializeDb, getDb, closeDb.
backend/src/sql/create_projects_table.sql	New SQL schema file creating _meta_projects table with metadata fields and JSON config.
backend/src/api/project/handlers.ts	Added getAllProjects async function to fetch all projects from the database.
backend/src/api/project/routes.ts	New Elysia route module with /project prefix and GET / endpoint using getAllProjects.
backend/src/api/project/index.ts	New module re-exporting all from routes and handlers.
backend/src/index.ts	Integrated initializeDb and registered projectRoutes in the main backend entrypoint.
backend/test/api/project/handlers.test.ts	New test suite for getAllProjects, covering empty and populated project scenarios.
backend/test/db.test.ts	New tests for database connection management: initialization, retrieval, closure, and error handling.
frontend/auto-imports.d.ts	New auto-generated TypeScript declarations for globally available Vue, Pinia, and router APIs and types.

Sequence Diagram(s)

sequenceDiagram
    participant App as Backend App
    participant DB as DuckDB (via db.ts)
    participant SQL as SQL Schema File
    participant API as Client/API Consumer

    Note over App,DB: Startup
    App->>DB: initializeDb()
    DB->>SQL: Load create_projects_table.sql
    DB->>DB: Create _meta_projects table if not exists
    DB-->>App: Return DB connection

    Note over API,App: Fetch all projects
    API->>App: GET /project/
    App->>DB: getDb()
    App->>DB: SELECT * FROM _meta_projects ORDER BY created_at DESC
    DB-->>App: Projects as JSON
    App-->>API: { data: [...] }

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sequenceDiagram
    participant Test as Test Suite
    participant DB as DuckDB (db.ts)
    participant SQL as SQL Schema File

    Test->>DB: initializeDb(':memory:')
    DB->>SQL: Load create_projects_table.sql
    DB->>DB: Create _meta_projects table
    Test->>DB: getDb()
    Test->>DB: Insert project (optional)
    Test->>DB: Query projects
    DB-->>Test: Project data
    Test->>DB: closeDb()
    DB-->>Test: Connection closed

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📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Free

📥 Commits

Reviewing files that changed from the base of the PR and between f93f50b and 43b6f63.

⛔ Files ignored due to path filters (1)

• bun.lock is excluded by !**/*.lock

📒 Files selected for processing (11)

• .gitignore (1 hunks)
• backend/package.json (1 hunks)
• backend/src/api/project/handlers.ts (1 hunks)
• backend/src/api/project/index.ts (1 hunks)
• backend/src/api/project/routes.ts (1 hunks)
• backend/src/db.ts (1 hunks)
• backend/src/index.ts (2 hunks)
• backend/src/sql/create_projects_table.sql (1 hunks)
• backend/test/api/project/handlers.test.ts (1 hunks)
• backend/test/db.test.ts (1 hunks)
• frontend/auto-imports.d.ts (1 hunks)

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