fix(copilot): show custom block names in read tool rows

[j15z]

Summary

• Resolve organization custom block read paths through the client block registry
• Show custom block labels and icons in Copilot tool rows instead of raw type IDs
• Subscribe tool rows and the message parser to custom-block overlay hydration: built-in blocks are in the static registry from first render, but custom blocks arrive from an async query after mount, so a row rendered before hydration (e.g. reloading a chat) resolved to the raw type id and never recomputed

Type of Change

• Bug fix

Testing

• bunx vitest run (71 focused tests)
• bun run type-check
• bun run lint
• bun run apps/sim/scripts/check-block-registry.ts origin/staging
• bun run check:audits
• bun run docs-manifest:check

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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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Aug 24, 2026 8:45pm

[cursor]

PR Summary

Low Risk
Display-only Copilot UI changes with targeted tests; no auth, data, or execution-path changes.

Overview
Copilot read tool rows now resolve organization/custom-blocks/*.json paths through the block registry, so labels show human names (e.g. Invoice Parser) instead of raw type ids.

getReadTargetBlock and resolveToolDisplay were extended for those paths; ToolCallItem and MessageContent subscribe to useCustomBlockOverlayVersion so icons and titles refresh when the custom-block overlay hydrates after mount (same signal as notifyBlockOverlayChanged). MessageContent re-runs parseBlocks when the overlay version changes so display titles update in the transcript.

Tests cover path resolution, display text, and jsdom hydration scenarios for icons and read titles.

^{Reviewed by Cursor Bugbot for commit 913dd20. Bugbot is set up for automated code reviews on this repo. Configure here.}

[greptile-apps]

Greptile Summary

The PR resolves organization custom-block read paths through the client block registry and refreshes existing Copilot read rows when custom-block metadata hydrates.

• Adds custom-block label and icon resolution for organization read paths.
• Subscribes parsed messages and tool rows to overlay updates.
• Adds regression coverage for metadata that becomes available after mount.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains; the previously reported stale metadata path now subscribes to overlay changes and re-resolves both labels and icons after hydration.

Important Files Changed

Filename	Overview
apps/sim/lib/copilot/tools/client/read-block.ts	Extends read-target resolution to organization custom-block schemas through the overlay-aware block registry.
apps/sim/app/workspace/[workspaceId]/home/components/message-content/message-content.tsx	Recomputes parsed tool-call display titles whenever the custom-block overlay version changes.
apps/sim/app/workspace/[workspaceId]/home/components/message-content/components/agent-group/tool-call-item.tsx	Re-resolves read-target icons on overlay updates so rows mounted before hydration refresh correctly.
apps/sim/app/workspace/[workspaceId]/home/components/message-content/message-content-overlay.test.tsx	Verifies that an already-mounted read title refreshes after custom-block registry hydration.

_{Reviews (2): Last reviewed commit: "fix(copilot): refresh custom block metad..." | Re-trigger Greptile}

[j15z]

@greptile

[j15z]

@cursor review

[cursor]

✅ Bugbot reviewed your changes and found no new issues!

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^{Reviewed by Cursor Bugbot for commit 913dd20. Configure here.}