perf(server): index projected thread lookups

[leoisadev1]

Problem

Projector updates and command invariants repeatedly scan the projected thread array to find the same record. Large environments pay that lookup cost for each update.

Changes

Index thread identity lookups and preserve the index across immutable patches. Use the same lookup in command invariants. Keep thread ordering, prior snapshots, and archived/deleted row semantics unchanged.

Verification

• Parent verification passed all 32 projector, command-invariant, and orchestration-engine tests on current main, including isolated SQLite migrations and command handling.
• The new 2,000-thread regression checks limited identity reads, immutable prior state, and archived/deleted records.
• Server package TypeScript checking, targeted lint, formatting, and diff checks passed. Additional configured Effect diagnostics remain a CI gate.
• This is a pure server lookup change with unchanged event and client contracts. No UI changes, provider calls, or measured end-to-end latency percentage are claimed.

Implemented and verified by gpt-6-astra in T3 Code through the Grok harness.

[vercel]

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

1 Skipped Deployment

Project	Deployment	Actions	Updated
akeru-bot-landing	Skipped		Sep 8, 2026 7:46pm UTC

[greptile-apps]

Greptile Summary

No issues found that require changes before merging. The updated protocol observation behavior, browser attachment flow, and paginated workspace search behavior were exercised successfully, including boundary conditions.

Confidence Score: 5/5

Safe to merge.

No defects were confirmed in the exercised behavior.

Files Needing Attention: None.

T-Rex Logs

What T-Rex did

• Executed focused tests covering disabled defaults, bounded queues, unbounded replay, notification callbacks, and Codex request replies.
• Ran the focused provider suite covering attachment acquisition, lazy behavior, and runtime headers, plus an eight-case runtime test across multiple connectors and transports; the provider suite passed 93 tests and the eight-case runtime test passed all eight cases, confirming browser metadata and authorization propagation remain correct.
• Executed paging, deadline-expiry, and cancellation coverage for workspace content search; the focused test passed all three changed-code scenarios and the existing WorkspaceSearchIndex suite passed 11 tests; the update avoids a stale next-page call after the time budget expires while preserving paging and cleanup.
• Ran the after-command observation workflow and log; the after log recorded the command, working directory, output, and exit code, with 4 files passed and 12 focused tests, confirming the behavior of disabled defaults, bounded/unbounded queues, and Codex callbacks.
• Restored production baseline and verified clean against HEAD, and removed the temporary authored test file from the source tree.

_{Ran code and verified through T-Rex}

_{Reviews (1): Last reviewed commit: "Merge remote-tracking branch 'origin/mai..." | Re-trigger Greptile}