🤖 feat: allow collapsing attached reviews in the chat decoration

[ammar-agent]

Summary

Make the "Attached Reviews" panel in the chat composer collapsible by rendering it through the shared ChatInputDecoration primitive, so a pending message with many attached reviews can be tucked away without detaching them.

Background

Reviews attached to the pending message were always rendered fully expanded above the textarea. When several reviews are attached, the panel could consume a large portion of the composer area and push the input around. Every other composer-adjacent decoration (pending reviews banner, pinned TODO list, queued message, background processes) already uses the collapsible ChatInputDecoration chrome; the attached-reviews panel was the odd one out.

Implementation

• AttachedReviewsPanel now wraps its contents in ChatInputDecoration:
  • Collapsed summary shows the review icon + attached count.
  • Expanded body keeps the existing review blocks and the "Clear all" action (shown when more than one review is attached).
• Expansion intent persists per-workspace via usePersistedState under a new getAttachedReviewsExpandedKey(workspaceId) storage key, defaulting to expanded to preserve the prior always-visible behavior.
• The panel renders inside the chat-input card (which already supplies the gutter), so the decoration's top border + horizontal padding are dropped and a bottom divider is kept above the textarea, matching the panel's prior placement.
• ChatInput passes workspaceId to the panel (only rendered in the workspace variant).

Validation

• make typecheck, make static-check, and targeted eslint on the touched files all pass.

Risks

Low. Scope is limited to the composer's attached-reviews preview; detach/clear/edit handlers are unchanged, and the default expanded state preserves existing behavior. Worst case is a per-workspace UI preference being mis-persisted, which self-heals on toggle.

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Generated with mux • Model: anthropic:claude-opus-4-8 • Thinking: xhigh • Cost: n/a

[ammar-agent]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. 🎉

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