Support for multiple indices

[pqnet]

No description provided.

[Copilot]

Pull Request Overview

This PR adds support for multiple indices and updates various modules and tests accordingly. Key changes include updates to migration logic for a new multi-index schema, integration of a new DatabaseService for document and index operations, and corresponding API and documentation updates.

Reviewed Changes

Copilot reviewed 15 out of 17 changed files in this pull request and generated 1 comment.

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File	Description
test/database/migrations/001-initialize-schema.test.ts	Tests for schema initialization, migration from old schema handling.
test/database-service.test.ts	New tests for index operations and document embedding.
test/api-integration.test.js	Integration tests covering API endpoints for indices and documents.
test/api-compatibility.test.ts	Compatibility tests for document formats and index queries.
server/utils/getDb.ts	Updated to run migrations and load the sqlite-vec extension.
server/utils/getDatabaseService.ts	New utility to create and memoize the DatabaseService instance.
server/utils/DatabaseService.ts	Adds methods for document insertion, index management, and search.
server/database/schema.ts	New migration framework for managing schema changes.
server/database/migrations/001-initialize-schema/index.ts	Migration logic to initialize or migrate to the multi-index schema.
server/api/indices/index.ts	API endpoint for listing and creating indices.
server/api/documents/index.post.ts	API endpoint for inserting documents with dynamic index processing.
server/api/documents/index.get.ts	API endpoint for searching documents by vector embedding.
nitro.config.ts	Configuration updates to support the better-sqlite3 connector.
README.md	Documentation updates explaining multi-index support and usage.

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Comments suppressed due to low confidence (2)

server/api/documents/index.post.ts:1

• The updated code uses dbService via getDatabaseService but the file does not import it. Please add: import getDatabaseService from '../../server/utils/getDatabaseService'; at the top of the file.

import { Primitive } from "db0";

server/api/documents/index.get.ts:1

• The handler references getDatabaseService without an import. Add an import statement for getDatabaseService at the top of the file, for example: import getDatabaseService from '../../server/utils/getDatabaseService';.

import { Primitive } from "db0";

[Copilot]

It appears that getDatabaseService is used but not imported. Consider adding an import statement such as: import getDatabaseService from '../../server/utils/getDatabaseService'; at the top of the file.