fix(copilot): expand tool metadata, fix thinking text rendering, clean up display logic

[waleedlatif1]

Summary

• Expanded MothershipToolName union and TOOL_UI_METADATA to cover all tool IDs — every tool now shows a human-readable display title instead of falling back to raw snake_case names
• Fixed thinking/reasoning text not rendering in chat — live streaming now wraps reasoning events in <thinking> XML, and loaded history converts stored thinking blocks the same way, both feeding into the existing parseSpecialTags rendering pipeline
• Removed formatToolName fallback and getOverrideDisplayTitle indirection; TOOL_UI_METADATA is now the single source of truth for tool display names
• Fixed phase: 'subagent' on deploy/key management tools — corrected to phase: 'management'
• Removed stale "Go backend" references in log messages and comments

Type of Change

• Bug fix

Testing

Tested manually

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)

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Mar 26, 2026 5:53am

[cursor]

PR Summary

Medium Risk
Moderate risk: changes how SSE reasoning/stored thinking blocks are transformed into chat text and centralizes tool display titles to a new comprehensive TOOL_UI_METADATA, which could impact streaming/chat rendering and tool label/icon consistency.

Overview
Updates Copilot chat rendering to properly display model reasoning and stored thinking blocks by wrapping them in <thinking>...</thinking> so they flow through the existing special-tag parser during both live streaming and history load.

Expands MothershipToolName and makes TOOL_UI_METADATA a complete, single source of truth for tool titles/phases, then simplifies message tool display logic to rely on this map (removing snake_case title formatting and override title resolution). Tool icon mappings are also extended to cover the expanded tool set.

Includes small cleanups: renames “Go backend” references to “server/copilot”, tightens types for persisted chat resources, removes unused client tool base types, and makes the workflow-tool name set internal.

^{Written by Cursor Bugbot for commit 3464600. Configure here.}

[greptile-apps]

Greptile Summary

This PR delivers three focused fixes to the copilot chat experience: expands MothershipToolName and TOOL_UI_METADATA to full coverage so every tool displays a human-readable title, fixes thinking/reasoning text that was silently dropped during live streaming and history replay, and simplifies the tool-name resolution pipeline by removing the formatToolName fallback and getOverrideDisplayTitle indirection in favour of TOOL_UI_METADATA as the single source of truth.\n\nKey changes:\n- TOOL_UI_METADATA promoted from Partial<Record<MothershipToolName, …>> to a full Record<…> — TypeScript now enforces completeness at compile time, and ~40 new tool entries are added with correct phase values (management for deploy/key tools, previously wrong).\n- Live streaming: the new reasoning SSE case in use-chat.ts wraps content chunks in <thinking>…</thinking> XML, feeding the existing parseSpecialTags pipeline. Both start and end phases use ensureTextBlock() so the closing tag is always written regardless of interleaved blocks.\n- History replay: mapStoredBlock now converts stored thinking-typed blocks to text blocks with the <thinking> wrapper before passing them to the rendering pipeline.\n- Dead code removed: ClientToolCallState enum, BaseClientToolMetadata, DynamicTextFormatter, WORKFLOW_EXECUTION_TIMEOUT_MS, ChatResource alias, and WORKFLOW_TOOL_NAME_SET (un-exported) are all gone.\n- Stale "Go backend" references updated to generic "server"/"copilot" language throughout.

Confidence Score: 5/5

Safe to merge — all three bugs are correctly addressed and no regressions were found.

The reasoning event handling correctly uses ensureTextBlock() for both start and end phases. Dead code removal is clean: ClientToolCallState is still exported from tool-display-registry.ts and imported from there by its consumers; WORKFLOW_EXECUTION_TIMEOUT_MS had no external usages; WORKFLOW_TOOL_NAME_SET is only used internally. The TOOL_UI_METADATA Record promotion gives compile-time completeness guarantees.

No files require special attention.

Important Files Changed

Filename	Overview
apps/sim/app/workspace/[workspaceId]/home/types.ts	Expands MothershipToolName union by ~40 entries and converts TOOL_UI_METADATA from Partial to a full Record, ensuring every tool maps to human-readable metadata at compile time.
apps/sim/app/workspace/[workspaceId]/home/hooks/use-chat.ts	Adds reasoning SSE event handling (wrapping chunks in thinking XML tags during live streaming) and converts stored thinking blocks to text blocks on history load; both correctly use ensureTextBlock() for safe tag insertion.
apps/sim/app/workspace/[workspaceId]/home/components/message-content/message-content.tsx	Removes formatToolName fallback, mapToolStatusToClientState, and getOverrideDisplayTitle indirection; displayTitle now resolves purely via TOOL_UI_METADATA with a raw-name fallback.
apps/sim/app/workspace/[workspaceId]/home/components/message-content/utils.ts	TOOL_ICONS expanded to cover all new MothershipToolName entries, with context_compaction and open_resource relocated to their correct semantic sections.
apps/sim/lib/copilot/tools/client/base-tool.ts	Removes ClientToolCallState enum, ClientToolDisplay, BaseClientToolMetadata, DynamicTextFormatter, and WORKFLOW_EXECUTION_TIMEOUT_MS — all confirmed unused after the displayTitle simplification.

_{Reviews (2): Last reviewed commit: "fix(copilot): guard null reasoning data,..." | Re-trigger Greptile}

[waleedlatif1]

@greptile

[waleedlatif1]

@cursor review

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

^{Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}