fix(tui): show the queued-message preview above the composer, not below

[gnanam1990]

Summary

A message typed while a run is active is queued for the next turn. Its [queued] … preview rendered on the line below the input box; this moves it to directly above the box so it reads as "waiting to send," sitting on top of what you're currently typing, instead of being visually detached from the composer by the status line beneath it. Footer height is unchanged — the preview line just relocates from below to above the box.

Test plan

• go build ./...
• go vet ./internal/tui/
• go test ./internal/tui/ -count=1 (new: TestQueuedPromptPreviewSitsAboveComposer asserts the preview line index is above the composer box top border)

Summary by CodeRabbit

• Bug Fixes
  • Adjusted the queued message preview so it now appears above the composer area on its own line, improving clarity in the footer.
  • Kept the rest of the footer layout behavior unchanged, including status and hint placement.
• Tests
  • Added coverage to confirm the queued prompt preview renders in the correct position relative to the composer.

[github-actions]

Zero automated PR review

Verdict: No blockers found

Blockers

• None found.

Validation

• [pass] Diff hygiene: git diff --check
• [pass] Tests: go test ./...
• [pass] Build: go run ./cmd/zero-release build
• [pass] Smoke build: go run ./cmd/zero-release smoke

Scope

Head: d52b26f4db80
Changed files (2): internal/tui/model.go, internal/tui/queued_message_test.go

This deterministic review checks validation status and basic diff hygiene. A human reviewer still owns product judgment and design quality.

[gnanam1990]

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: 12fcb090-6049-42b5-a702-96564c32fd9e

📥 Commits

Reviewing files that changed from the base of the PR and between 85273ea and d52b26f.

📒 Files selected for processing (2)

• internal/tui/model.go
• internal/tui/queued_message_test.go

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Walkthrough

The queued-message "waiting to send" preview in footerView is repositioned to render above the composer box instead of after it. A new test verifies the queued preview line appears strictly above the composer's top border line.

Changes

Queued Preview Ordering

Layer / File(s)	Summary
Reposition queued preview render order internal/tui/model.go	The conditional queued message preview block, including its trailing newline, is moved to render immediately before composerBox, removing its prior placement after the composer.
Test for preview ordering internal/tui/queued_message_test.go	New test TestQueuedPromptPreviewSitsAboveComposer queues a prompt during a pending run, renders the footer, and asserts the "queued" line appears above the composer's "╭" border line.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• Gitlawb/zero#168: Also modifies internal/tui/model.go's footer/composer rendering logic, refactoring footer composition and composer chrome.
• Gitlawb/zero#300: Also modifies the TUI footer layout in internal/tui/model.go, specifically the row above the composer.

Suggested reviewers: Vasanthdev2004

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly matches the main change: moving the queued-message preview above the composer in the TUI.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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