[maria-rcks]

On Latest the environment identification setting was hidden, so the channel artwork could not be turned on. Dev and Nightly could only show their own art.

• EnvironmentIdentificationMode gains nightly-artwork and dev-artwork. The default artwork still follows the running channel, so Latest stays off by default and Dev/Nightly look the same as before.
• Settings > Appearance > Advanced always shows the row. On Latest it offers None (default), Nightly artwork, Dev artwork. On Dev it offers Dev artwork (default), Nightly artwork, Version pill, None; Nightly mirrors that.
• Custom palette themes still fall back to the pill for every artwork mode.

Verified on a local dev server with VITE_HOSTED_APP_CHANNEL=latest and on the dev channel. On Latest, picking Nightly artwork renders the night sky header. The choice persists into Dev, which offers the extra Nightly option. An older build reading the stored nightly-artwork value still loads settings normally and shows no art. Desktop was not run; mobile does not read this setting.

Before, Latest: Advanced has no environment identification row.

After, Latest: the row defaults to None, with Nightly and Dev artwork choices.

After, Dev: Nightly artwork is available next to the default Dev artwork.

Claude Opus 5.5 (claude-opus-5-5) in T3 Code via Claude Code.

🤖 Generated with Claude Code

[macroscopeapp]

Approvability

Verdict: Approved at 8261150

Macroscope's review found this PR approvable — Adds optional Dev or Nightly artwork across release channels, including Latest, while preserving existing defaults. The change is limited to appearance settings and decorative rendering, with existing theme restrictions retained.

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[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	5.0 KiB	5.0 KiB	−6 B (−0.1%)	6.8 KiB	✅
Codex	Thread snapshot wire	3.8 KiB	3.8 KiB	0 B (0.0%)	4.9 KiB	✅
Codex	Live turn WebSocket wire	1.3 KiB	1.2 KiB	−6 B (−0.5%)	2.0 KiB	✅
Codex	Live turn WebSocket decoded	21.6 KiB	21.6 KiB	0 B (0.0%)	24.4 KiB	✅
Codex	Live turn messages	2	2	0 (0.0%)	8	✅
Claude	Total thread wire	5.1 KiB	5.0 KiB	−6 B (−0.1%)	6.8 KiB	✅
Claude	Thread snapshot wire	3.8 KiB	3.8 KiB	0 B (0.0%)	4.9 KiB	✅
Claude	Live turn WebSocket wire	1.3 KiB	1.3 KiB	−6 B (−0.5%)	2.0 KiB	✅
Claude	Live turn WebSocket decoded	21.9 KiB	21.9 KiB	0 B (0.0%)	24.4 KiB	✅
Claude	Live turn messages	2	2	0 (0.0%)	8	✅

Baseline: 5808469 · PR result: 8261150 · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 108.5 KiB
• Claude decoded thread snapshot: 108.8 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.

[coderabbitai]

No actionable comments were generated in the recent review.

Recent review info

Run configuration

• Source mode: Auto
• Repository: pingdotgg/t3code
• Branch: t3/channel-artwork-any-channel
• File: .coderabbit.config.ts
• Commit: 8261150
• Layers: Repository TS config
• Review profile: CHILL
• Plan: Advanced
• Run ID: b29353eb-90e0-492d-ad20-52dae2335d35

Commits

Reviewing files that changed from the base of the PR and between 5808469 and 8261150.

Files selected for processing: 8

• apps/web/src/components/AppSidebarLayout.tsx
• apps/web/src/components/SidebarStageBackdrop.tsx
• apps/web/src/components/chat/ComposerPrimaryActions.tsx
• apps/web/src/components/settings/AppearanceSettingsPanel.tsx
• apps/web/src/components/settings/settingsSearch.ts
• apps/web/src/components/sidebar/SidebarChrome.tsx
• apps/web/src/hooks/useSettings.ts
• packages/contracts/src/settings.ts

Included review availability: This review used your included allowance. Your plan provides up to 10 included reviews per hour; 9 remain after this review.

Walkthrough

Environment identification now supports Nightly and Dev artwork modes. The sidebar backdrop resolver, its consumers, and the appearance settings use the selected mode. Theme fallback and settings search terms are also updated.

Changes: Environment identification

Layer / File(s)	Summary
Mode contract and backdrop resolution packages/contracts/src/settings.ts, apps/web/src/components/SidebarStageBackdrop.tsx	The mode contract adds nightly-artwork and dev-artwork. The resolver and hook accept an EnvironmentIdentificationMode and select a backdrop variant based on the mode.
Backdrop mode consumers apps/web/src/components/AppSidebarLayout.tsx, apps/web/src/components/chat/ComposerPrimaryActions.tsx, apps/web/src/components/sidebar/SidebarChrome.tsx	These components pass the selected environment identification mode to the backdrop hook or resolver.
Appearance options and theme fallback apps/web/src/components/settings/AppearanceSettingsPanel.tsx, apps/web/src/hooks/useSettings.ts, apps/web/src/components/settings/settingsSearch.ts	The appearance panel displays stage-specific choices and always renders the setting row. Theme fallback also applies to modes other than pill and none, and search terms include “latest”.

Priority: Low

Estimated code review effort: 2 (Simple) | ~12 minutes

Change: Feature

Possibly related PRs

• pingdotgg/t3code#25651: Reorganizes the same environment-identification controls in AppearanceSettingsPanel.

Suggested labels: size:M

Suggested reviewers: juliusmarminge, t3dotgg

Merge Risk: Minimal · up to 82611

The artwork choices remain available as intended, and no issue requiring a fix before merge was established.

Pre-merge checks: 3 · 1

Failed checks: 1 warning

Check name	Status	Explanation	Resolution
Description check		The description follows the template's intent and covers the problem, the change, and verification. The Problem and Change content is in the Latest-channel bullets and the opening paragraph. Verificat…	Add a Scope and approval section. Link the triaged issue or the discussion that has explicit maintainer approval, including the approval comment. If no prior approval exists, explain why this change qualifies as focused configuration of an …

Passed checks: 3 passed

Check name	Status	Explanation
Title check		The title "feat(web): channel artwork choice on Latest, plus nightly or dev art on any channel" matches the main change. The diff adds nightly-artwork and dev-artwork modes to EnvironmentIdentificatio…
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

Full details: Title check

Explanation

The title "feat(web): channel artwork choice on Latest, plus nightly or dev art on any channel" matches the main change. The diff adds nightly-artwork and dev-artwork modes to EnvironmentIdentificationMode, makes the settings row always render, and passes the full mode through the sidebar and backdrop helpers. The title is specific and follows the conventional commit format. It is long at 83 characters, but it still conveys the primary change.

Full details: Description check

Explanation

The description follows the template's intent and covers the problem, the change, and verification. The Problem and Change content is in the Latest-channel bullets and the opening paragraph. Verification is detailed: it names the local dev server with VITE_HOSTED_APP_CHANNEL=latest, the observed Nightly artwork rendering, the persistence into Dev, and the older-build check. It also includes before/after screenshots, as the template requires for UI changes. The Scope and approval section is missing. The template asks for a linked triaged issue or maintainer-approved discussion, or an explanation of why the change qualifies as focused configuration of an established capability. The description does not include either. The model attribution at the end satisfies the template's agent note.

Resolution

Add a Scope and approval section. Link the triaged issue or the discussion that has explicit maintainer approval, including the approval comment. If no prior approval exists, explain why this change qualifies as focused configuration of an established capability. Explain what the existing environment identification option already controls, and why the new options stay within that capability. The template states that adding a setting alone does not count as an approval exemption.

Finishing Touches

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