[reachjalil]

Summary

• Memoize composer attachment tokens using the same pattern as pasted-text tokens.
• Previously, each composer render allocated a fresh attachment array, including when empty. That changed a Lexical SyncPlugin effect dependency and serialized the current draft before its unchanged-value bailout. Streaming parent renders could therefore repeatedly scan an untouched draft.
• Preserve normal updates when attachments change. No custom prop comparator, deferred draft state, streaming throttle, first-token delay, or send-path changes.

Scope and dependencies

• Independent change against current dev; no unmerged dependencies.
• Existing streaming improvements fix(app): isolate streaming chat render work #4104, Keep streaming responsive under long active tasks #4130, perf(chat): render a streaming answer block by block instead of re-parsing the whole message per token #4422, and perf(app): avoid reprocessing settled history during v1 streaming #4614 are merged, as is optimistic send fix(app): show sent messages immediately across new chats #4631. This addresses the remaining composer token identity issue rather than duplicating those changes.
• Open Add model-aware video attachments and fix streaming Markdown recovery #4585 changes streaming Markdown recovery and video attachments, but does not change this composer file. Attachment upload feedback, submission preparation, and Starting state are outside this change.

Verification

Incomplete: tests, builds, installs, runtime profiling, and environment setup were skipped at requester direction. Ready for review as explicitly requested; no runtime performance result is claimed.

• Passed: git diff --check and git diff --check origin/dev...HEAD (exit 0).
• Signed commit verified with git log --format="%H %G? %s" origin/dev..HEAD: signature status G.

Reviewer reproduction (not run)

1. Open a conversation and request a long streaming Markdown response.
2. While the response streams, type and edit a long multiline follow-up draft with no attachments. Confirm text and cursor remain intact, and queue or steer immediately after the last keystroke.
3. Repeat with an attachment and pasted-text chip. Add/remove an attachment and confirm chip content and submission remain current.
4. With React profiling enabled, inspect Lexical SyncPlugin while streaming without editing the draft: unchanged attachment tokens should no longer retrigger its draft-serialization effect. Confirm actual draft edits still synchronize and the first streamed token is not delayed.

Runtime assertions and a measured responsiveness comparison remain deferred.

[vercel]

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Project	Deployment	Actions	Updated
openwork-app	Ready	Preview	Sep 8, 2026 7:40pm UTC

3 Skipped Deployments

Project	Deployment	Actions	Updated
openwork-den	Skipped		Sep 8, 2026 7:40pm UTC
openwork-diagnostics	Skipped		Sep 8, 2026 7:40pm UTC
openwork-landing	Skipped	v0	Sep 8, 2026 7:40pm UTC

[diff-warden]

Warden security clearance: clear. No blocking findings (security or desktop↔den sync) in this diff (7440f5144cae6a454bcc9ec563dcbc496678d214). Automated clearance satisfies the required-review gate only — a human still reviews and merges. Analysis run