Scope git toast state by thread ref

[juliusmarminge]

Summary

• Scope git action toast state to ScopedThreadRef so progress toasts stay pinned to the environment/thread that started them.
• Update branch syncing and store writes to target the correct environment instead of the currently active one.
• Add logic and store coverage for cross-environment thread collisions and legacy thread-id toast behavior.

Testing

• bun fmt
• bun lint
• bun typecheck
• bun run test

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Note

Medium Risk
Updates toast filtering and git branch persistence to be environment-aware via ScopedThreadRef, which can impact cross-environment UX/state if any callers still assume thread-id-only behavior. Includes test coverage, but changes touch shared store and notification behavior.

Overview
Scopes git action progress toasts and toast visibility by ScopedThreadRef (environment + thread), keeping in-flight toasts pinned to the thread/environment that started them while preserving legacy threadId-only toast data via fallback.

Refactors branch syncing to write to the correct environment: setThreadBranch now takes a ScopedThreadRef, and GitActionsControl/BranchToolbarBranchSelector update server threads via environment API + setThreadBranch or update draft threads via setDraftThreadContext when no server thread exists. Adds targeted tests for cross-environment collisions, draft-thread syncing, and toast scoping.

^{Reviewed by Cursor Bugbot for commit fa9f6e2. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Scope git branch sync and toast visibility by ScopedThreadRef

• Changes setThreadBranch to accept a ScopedThreadRef instead of a ThreadId, so branch updates target the specific environment of the thread rather than always using activeEnvironmentId.
• Updates GitActionsControl to sync branch to server threads via the environment API and setThreadBranch, or to draft threads via setDraftThreadContext when no server thread exists.
• Adds shouldRenderThreadScopedToast to filter toast visibility by ScopedThreadRef (environmentId + threadId), with fallback to legacy threadId-only data.
• Updates the Toasts and AnchoredToasts components in toast.tsx to derive an active ScopedThreadRef from the route and apply the new predicate.
• Behavioral Change: toasts and branch state scoped only by threadId will still render correctly via legacy fallback, but multi-environment scenarios now filter by environment as well.

^{Macroscope summarized fa9f6e2.}

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[macroscopeapp]

Approvability

A prior Macroscope approval was dismissed. Re-evaluating eb99338…

Dismissing prior approval to re-evaluate eb99338