fix(copilot): scope panel chat drafts per chat

[waleedlatif1]

Summary

• The workflow panel keyed copilot drafts by workspace + workflow only. A draft is cleared on submit and never on chat switch, and the scope key is what remounts the input (key={draftScopeKey} in mothership-chat.tsx), so selecting a different chat in the same workflow carried the previous chat's typed text, contexts, and file attachments into it. The home chat already keys drafts per chat id — this brings the panel in line.
• Deleting a chat now prunes its draft. With per-chat keys it would otherwise sit in persisted storage forever, unreachable.
• A store migration drops drafts saved under the old workflow-only key instead of leaving them as entries nothing reads. Home drafts are untouched — their key shape did not change.
• Hoisted the key builder to module scope and documented the keyspace on the store.

Known trade-off: when a workflow has no chat selected the key is …:new, so the first send flips the key once and remounts the input. Text typed in that window is flushed to the new bucket rather than the new chat's. The deeper fix is for UserInput to react to draftScopeKey changes (flush old, restore new) instead of relying on the key remount — that belongs in a follow-up covering both surfaces at once.

Type of Change

• Bug fix

Testing

Tested manually. bun run type-check, bun run lint, and bun run check:audits (36 audits) pass. Added unit tests for the store migration, verified they fail when the key pattern is broken.

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 27, 2026 5:54am

[cubic-dev-ai]

No issues found across 3 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

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[greptile-apps]

Greptile Summary

The PR scopes workflow-panel Copilot drafts by workspace, workflow, and chat, preventing text and attachments from carrying between chats.

• Clears the corresponding persisted draft after a chat is deleted.
• Adds a versioned store migration that removes obsolete workflow-only draft keys while preserving home and per-chat drafts.
• Adds migration tests for legacy, home, per-chat, and empty persisted states.

Confidence Score: 5/5

The PR appears safe to merge; no actionable correctness, security, or repository-rule violations were identified.

The new key consistently scopes panel drafts to the active workflow and its workflow-scoped chat selection, deletion clears the key captured for the initiating workflow, and the migration preserves all currently consumed key shapes.

Important Files Changed

Filename	Overview
apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/panel.tsx	Extends the panel draft key with the selected chat ID and removes that scoped draft after successful chat deletion.
apps/sim/stores/mothership-drafts/store.ts	Documents draft key formats and adds a version-1 persistence migration that prunes obsolete workflow-only keys.
apps/sim/stores/mothership-drafts/store.test.ts	Verifies migration behavior for legacy workflow drafts, home drafts, per-chat drafts, and missing state.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart LR
  Selection[Selected workflow and chat] --> Key[Build workspace/workflow/chat key]
  Key --> Draft[Persist or restore scoped draft]
  Delete[Delete chat succeeds] --> Clear[Clear matching scoped draft]
  Legacy[Persisted v0 state] --> Migrate[Remove workflow-only keys]
  Migrate --> Drafts[Preserve home and per-chat keys]

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