feat: implement universal fuzzy search using Typesense

[sudhanshu112233shukla]

Universal Fuzzy Search Implementation

Summary

This PR implements Universal Fuzzy Search using Typesense. This feature allows users to perform typo-tolerant searches across:

• Repositories: Search by name or organization.
• Files: Search by filename or path.
• Commits: Search by commit message, author, or hash.

Fixes #536

Changes

Infrastructure

• Added typesense service to docker-compose.yml (v26.0).
• Updated @sourcebot/shared env schema to include TYPESENSE_HOST, TYPESENSE_PORT, and TYPESENSE_API_KEY.

Backend (@sourcebot/backend)

• New Service: TypesenseService (src/search/typesense.ts)
  • Handles connection to Typesense.
  • Manages schemas for repos, files, and commits collections.
  • Provides indexRepo, indexFiles, indexCommits, and search methods.
  • Includes Fail-Safe Guards: If Typesense is unreachable, indexing operations fail gracefully without crashing the main application.
• Indexing Integration: Updated RepoIndexManager (src/repoIndexManager.ts) to trigger Typesense indexing asynchronously after the standard git indexing process.
• Git Helpers: Added getAllFiles and getRecentCommits to src/git.ts.
• API Endpoint: Added GET /api/search/fuzzy to src/api.ts.

Verification

• Build: Verified yarn workspace @sourcebot/backend build succeeds.
• Unit Tests: Added src/search/typesense.test.ts (Vitest).
  • Passed 7/7 tests verifying schema creation, data mapping, and query construction.
• Manual Verification: Since Docker was unavailable in the dev environment, logic was strictly verified via unit tests and strict type checking.

Notes

• Requires docker-compose up -d typesense to be running for search to work.
• Search fails gracefully (returns error/logs warning) if the service is down.

( Screenshot result)

(Add screenshots of the UI if applicable, or API response examples)

// Example Response for /api/search/fuzzy?q=reacct
{
  "hits": [
    {
      "document": {
        "name": "facebook/react",
        "repo_id": 123
      }
    }
  ]
}

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[sudhanshu112233shukla]

@msukkari @brendan-kellam do check it , it is big change , but i am confident that it will work , please you guys also check it and tell me it it needs any more , changes , i have tested it as will , explained it in PR description , do check it , love to hear from you guys on this !!!