fix(web): keep completed assistant copy actions visible

[maxwellyoung]

Completed assistant responses hide their copy action when the pointer leaves the row, including after selecting response text. Keep the shared assistant footer visible and remove its unused hover group and visibility toggle.

Fixes #4046.

Validation: 142 focused timeline tests pass. In the isolated local web client, selected response text and moved the pointer away: the footer disappears before the change and remains visible after it. Clicking Copy copies the complete response, including its list, rather than only the selected paragraph.

Web typechecking reports TS2554 in fileEditorVirtualization.test.ts:260. The same error occurs on unchanged main at eced382.

Before: selected response text, then moved the pointer outside the row.

After: the same selection and pointer movement leaves the copy action visible.

copy-footer-after.webm

Note

Keep completed assistant copy actions visible and harden desktop update state across re-checks

• Preserves downloaded desktop update state through check-start, check-failure, update-available, and no-update transitions so a previously downloaded update stays actionable instead of being discarded or errored
• Adds the Antigravity provider as a built-in driver with release-asset resolution, model catalog integration, client settings schema, and icon support across server, web, and mobile
• Introduces exponential backoff for managed relay connector restarts (1s base, 60s cap, 30s stable-uptime window) to prevent crash loops
• Migrates mobile and web UI components from JavaScript theme-color lookups to class-based Uniwind styling and appearance-provider-driven theming across settings, connection rows, file trees, and terminal surfaces
• Adds new contracts for DPoP failure categories, desktop app activation, provider setup/installation, assistant citations, and browser profiles; adds database migrations 041–047
• Risk: resolveSessionCookieName in utils.ts now derives cookie names from environment identity for remote non-development servers; existing sessions on those servers will be invalidated. model.MODEL_SLUG_ALIASES_BY_PROVIDER in model.ts removes Claude slug aliases, which may affect custom model resolution for users relying on alias-based slug lookups. SQLite busy_timeout is now 5,000ms in Sqlite.ts; workloads previously failing fast on lock contention will now wait instead.

^{Macroscope summarized 85d5cfc.}

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[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — The implementation is a small, localized UI fix that makes completed assistant copy actions visible without changing copy-state or data behavior. An unresolved comment identifies a concrete regression-test assertion that can pass even if hover gating returns, so human attention is warranted.

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[macroscopeapp]

Two small follow-ups on the assistant footer visibility change: an orphaned group/assistant marker and an assertion that cannot fail.

^{Posted via Macroscope — UI Consistency}

Dismissing prior approval to re-evaluate 85d5cfc

[macroscopeapp]

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The top 3 files driving up this estimate:

File	Diff Size	Estimate
apps/web/src/components/chat/ChatComposer.tsx	218.09KB	$10.90
apps/web/src/components/ChatView.tsx	192.11KB	$9.61
apps/server/src/provider/Layers/OpenCodeAdapter.ts	127.24KB	$6.36

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[t3dotgg]

Note

🤖 Codex responding on behalf of Theo

Closing this for now because the reporter confirmed that #4046 no longer occurs, and we are keeping the current footer visibility behavior. Thank you for working on copy access and for providing the before/after recording and test results. If the copy action still becomes inaccessible on current main, or we have misunderstood what your change fixes, please reopen this PR or leave a comment so we can reopen it.