feat(runner): adds sql query runner ai tab auto completion

[Rudra-Sankha-Sinhamahapatra]

Description of Changes

• What was changed?
• Added TAB AI suggestions ( ai will generate and if user clicks tab it will auto complete it)
• Why was it changed?
  To make things easy for the user with ai based suggestions directly on monaco code editor
• Any related issues or discussions?

Closes #221 (If applicable, delete this line if not)

Checklist

• My changes are scoped and focused
• I have tested the code locally

Notes to reviewer

• Are there any specific things the reviewer should focus on?

Here's the screen recording

Screen.Recording.2025-12-05.at.7.mp4

cc: @letstri @geekyharsh05

[railway-app]

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[Copilot]

Pull request overview

This PR adds AI-powered tab autocompletion to the SQL query runner, enabling real-time intelligent code suggestions powered by Google's Gemini model. The feature integrates the monacopilot library with Monaco editor to provide context-aware SQL completions based on the database schema.

Key Changes:

• Implemented AI code completion endpoint using Google Gemini 2.0 Flash model with custom SQL-aware prompts
• Integrated monacopilot library in the runner editor with debounced requests and proper cleanup handling
• Added database schema context builder to provide AI with table, column, and enum information

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
pnpm-lock.yaml	Adds monacopilot package dependency to the monorepo lockfile
apps/api/package.json	Adds monacopilot dependency to API package (appears unused)
apps/desktop/package.json	Adds monacopilot dependency to desktop application
apps/api/src/orpc/routers/ai/index.ts	Exports new codeCompletion endpoint in AI router
apps/api/src/orpc/routers/ai/code-completion.ts	Implements AI code completion endpoint with Gemini model and SQL-aware prompt engineering
apps/desktop/src/routes/(protected)/_protected/database/$id/sql/-components/runner/runner-editor.tsx	Integrates monacopilot with Monaco editor, implements debounced completion requests with cleanup logic
apps/desktop/src/entities/database/utils/monaco.ts	Adds databaseAICompletionContext function to build schema context for AI completions

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

Comments suppressed due to low confidence (1)

apps/api/package.json:41

• The monacopilot dependency appears to be unused in the API package. This is a frontend Monaco editor library and should only be included in the desktop app package. Consider removing this dependency from apps/api/package.json.

    "loops": "catalog:",

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[letstri]

After many tests, unfortunately, I decided not to accept this PR.