feat(copilot): copilot tool refactor

[Sg312]

Summary

• Moves all copilot tools client side
• Removes redis polling for copilot tools
• Handles tool detection purely via SSE stream

Fixes #(issue)

Type of Change

• New feature

Testing

Manual testing

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

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Project	Deployment	Preview	Comments	Updated (UTC)
sim	Ready	Preview	Comment	Aug 19, 2025 0:44am

1 Skipped Deployment

Project	Deployment	Preview	Comments	Updated (UTC)
docs	Skipped			Aug 19, 2025 0:44am

[greptile-apps]

Greptile Summary

This PR implements a major architectural refactor of the copilot tool system, moving from a Redis-backed interrupt/approval model to a simplified client-server execution pattern. The refactor introduces several key changes:

Architecture Changes:

• Tool Execution Model: Removes the complex Redis-backed interrupt system (requiresInterrupt = true) and replaces it with direct tool execution via the /api/copilot/methods endpoint
• Client-Server Separation: Creates a clear separation between client-side tools (UI state management, parameter normalization) and server-side tools (actual execution logic)
• Unified Communication: Standardizes tool communication through the /api/copilot/methods route with completion callbacks to sim-agent

New Client Tools Added: 16 new client-side tools were added to support comprehensive workflow operations including: workflow building/editing (BuildWorkflowClientTool, EditWorkflowClientTool), environment variable management (GetEnvironmentVariablesClientTool, SetEnvironmentVariablesClientTool), Google Drive operations (ListGDriveFilesClientTool, ReadGDriveFileClientTool, GDriveRequestAccessTool), documentation search (SearchDocumentationClientTool), and other utilities like API requests and OAuth credential management.

Server-Side Additions: Two new server-side completion handlers were added (runWorkflowServerTool, gdriveRequestAccessServerTool) that echo back status/confirmation data for callback purposes rather than performing complex business logic.

Notification System Refactor: The notification system was completely overhauled - the notify() function became a no-op, the /api/copilot/confirm endpoint was removed entirely (along with its tests), and completion notifications now flow through the methods route with callbacks to sim-agent.

Enhanced Features: Added authentication flexibility (session-only auth), auto-injection of session userId for OAuth methods, prefetch functionality for blocks/tools metadata, and comprehensive debug logging throughout the documentation search functionality.

The refactor maintains backward compatibility while significantly simplifying the execution model, reducing Redis dependencies, and providing a more consistent tool development pattern. All new client tools follow the same architectural pattern using BaseTool, postToMethods utility functions, and standardized error handling.

Confidence score: 2/5

• This PR introduces breaking architectural changes with significant complexity that require extensive testing and could destabilize the copilot system
• Score reflects the removal of entire test suites, extensive debugging code that should be temporary, and complex state management changes that could introduce hard-to-detect bugs
• Pay close attention to all copilot functionality, the removed /api/copilot/confirm endpoint and its test coverage, and the extensive debug logging in documentation search tools that should be cleaned up before production

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