[AI091]

While the sidebar is filtered to one project, New opened a project picker instead of starting in that project. It now opens a draft in the selected project, keeping the viewed environment when it belongs to that scope.

This keeps the sidebar-button scope accepted in the original triage. Shift-click, multiple selected projects, the folder sidebar, keyboard shortcuts, the command palette, SnapShot, and the landing route retain main's behavior.

Merged current main again on 2026-11-10 with a merge commit. The only conflict was the import block in Sidebar.tsx; the button still reuses the sidebar's resolved project groups.

Validation on the merged branch: vp run check:changed refs/remotes/origin/main passed format, lint, knip, affected typechecks, and React Compiler checks, and the 129 unit tests it selected passed. The browser test files it selected could not launch locally (no Playwright browser installed on this machine), so those are left to CI. A fresh pass in the web client on an isolated dev server with synthetic projects covered: the unscoped picker, scoping to one project, Shift-click keeping the viewed project, and a plain click opening the draft in the scoped project.

Implemented with gpt-6.1-sol through the Codex harness. Revived (merged with current main and re-verified) by Claude Fable 5.2 through the Claude Code harness in T3 Code.

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — This PR changes where new chats and initial landing drafts are created for users with a scoped sidebar, affecting several existing entry points across web and desktop. An unresolved hydration-timing concern could also cause the initial chat to target the wrong project before persisted settings are applied.

Not approved because:

• 1 blocking correctness issue found at or above your repo's Minimum Blocking Severity

^{Adjust the Minimum Blocking Severity for this repo — including turning it Off — in Settings. You can add or adjust custom eligibility rules. Learn more.}

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Walkthrough

When the sidebar has a project scope, new-thread actions use a project from that scope. The draft landing page also limits project selection to scope members. Without a scope, existing project-selection behavior remains.

Changes: Sidebar project scope

Layer / File(s)	Summary
Resolve scope for project selection apps/web/src/hooks/useSidebarProjectScope.ts, apps/web/src/routes/_chat.index.tsx	The new hook returns the project group matching the sidebar scope. The draft landing page filters candidate projects to scope members when a scope exists; otherwise, it considers all projects.
Resolve a scoped thread destination apps/web/src/lib/chatThreadActions.ts, apps/web/src/lib/chatThreadActions.test.ts, apps/web/src/hooks/useHandleNewThread.ts, apps/web/src/hooks/useHandleNewThread.test.ts	The resolver keeps the active thread or draft project when it belongs to the scope. Otherwise, it returns the scope’s representative project. useHandleNewThread exposes the resolved reference when scoped and null when unscoped. Tests cover in-scope and out-of-scope viewed threads.
Use the scoped destination for new threads apps/web/src/components/Sidebar.tsx, apps/web/src/routes/_chat.tsx, docs/user/thread-sidebar.md	A non-Shift click on New in the scoped sidebar creates a thread in the scoped project and closes the mobile sidebar when applicable. The chat.new shortcut uses the resolved scoped project. The documentation describes this behavior.

Estimated code review effort: 3 (Moderate) | ~20 minutes

Change: Feature · Severity of issue fixed: Low

Sequence Diagram(s)

sequenceDiagram
  participant ChatRouteGlobalShortcuts
  participant useHandleNewThread
  participant useSidebarProjectScope
  participant resolveScopedNewThreadProjectRef
  ChatRouteGlobalShortcuts->>useHandleNewThread: Read scopedNewThreadProjectRef
  useHandleNewThread->>useSidebarProjectScope: Read the sidebar project scope
  useHandleNewThread->>resolveScopedNewThreadProjectRef: Resolve the destination from the active thread or draft
  useHandleNewThread-->>ChatRouteGlobalShortcuts: Return the scoped project reference
  ChatRouteGlobalShortcuts->>ChatRouteGlobalShortcuts: Create the thread with the scoped project reference

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Suggested reviewers: juliusmarminge, t3dotgg

Merge Risk: Minimal · up to 69430

No concrete merge-blocking behavior is established. Maintainers should confirm that the shortcut and landing-page changes are within the intended scope.

Security architecture risk: Low · up to 69430

New chats now follow the selected project scope, which can affect their target machine. Selection remains limited to known project groups, and no new permission bypass was identified. Downstream authorization has not been fully verified.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• inferred — The assessed effect is destination selection among projects represented in the client's current catalog, potentially spanning machines within a grouped project. It affects draft ownership and the environment queried for project defaults. The inspected changes do not demonstrate additional tenant, service, credential, or datastore authority.

Trust Boundaries and Controls

• inferred — The persisted scope key is a routing preference, not proof of authorization. Resolving it against current groups and matching both IDs constrains normal destination selection; bypassing the picker bypasses a destination-selection interface, not an evidenced permission control. Server-side authorization for project-file reads and eventual draft promotion remains outside the verified scope.

Pre-merge checks: 2 · 2

Failed checks: 2 warnings

Check name	Status	Explanation	Resolution
Out of Scope Changes check		The linked issue covers scoped sidebar New. The PR also changes the global chat.new shortcut and the / landing draft. The issue does not request these entry points. The review comments identify `c…	Remove the chat.new and / landing-draft behavior changes from this PR, or obtain and link explicit maintainer approval for that additional scope. Split the additional behavior into a separate PR if it is not approved here.
Description check		The description covers the problem, implementation, scope, and verification, but it does not accurately describe the changes. It says keyboard shortcuts retain main’s behavior, while the PR changes th…	Correct the description to state that chat.new and the landing draft use the sidebar scope. Provide explicit maintainer approval for those additional behavior changes, or remove them from this PR. Keep the verification details and note th…

Passed checks: 2 passed

Check name	Status	Explanation
Linked Issues check		Issue [#11895] requires sidebar New to use the selected project when the sidebar has a project scope. The PR adds scope resolution, preserves a viewed project that belongs to the scope, and falls back…
Title check		The title clearly and concisely describes the main change: New threads start in the sidebar's scoped project.

Full details: Linked Issues check

Explanation

Issue [#11895] requires sidebar New to use the selected project when the sidebar has a project scope. The PR adds scope resolution, preserves a viewed project that belongs to the scope, and falls back to the scoped project otherwise. Sidebar.tsx uses the direct creation path for non-Shift New actions. Existing project-selection and Shift-click paths remain available. The added tests cover in-scope and fallback resolution.

Full details: Out of Scope Changes check

Explanation

The linked issue covers scoped sidebar New. The PR also changes the global chat.new shortcut and the / landing draft. The issue does not request these entry points. The review comments identify chat.new parity as a separate decision and report no maintainer approval for the added scope. CONTRIBUTING.md requires explicit maintainer approval for intentional product behavior changes beyond a linked issue.

Resolution

Remove the chat.new and / landing-draft behavior changes from this PR, or obtain and link explicit maintainer approval for that additional scope. Split the additional behavior into a separate PR if it is not approved here.

Full details: Description check

Explanation

The description covers the problem, implementation, scope, and verification, but it does not accurately describe the changes. It says keyboard shortcuts retain main’s behavior, while the PR changes the chat.new shortcut to create in the scoped project. The cited approval covers the sidebar button, but the description does not establish approval for the shortcut and landing-route changes.

Resolution

Correct the description to state that chat.new and the landing draft use the sidebar scope. Provide explicit maintainer approval for those additional behavior changes, or remove them from this PR. Keep the verification details and note the browser tests that could not run locally.

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• apps/web/src/routes/_chat.tsx

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Actionable comments posted: 1

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Inline comments:
Review comments at @apps/web/src/routes/_chat.index.tsx:
- Line 56: Update the landing-page project candidate selection to filter
`projects` by `projectScope.memberProjectRefs` before sorting, rather than
deriving candidates from `projectScope.members`, so every scoped project’s
activity is considered.

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📒 Files selected for processing (14)

• apps/web/src/components/CommandPalette.tsx
• apps/web/src/components/Sidebar.logic.test.ts
• apps/web/src/components/Sidebar.logic.ts
• apps/web/src/components/Sidebar.tsx
• apps/web/src/components/desktop/SnapShotCoordinator.tsx
• apps/web/src/components/sidebar/SidebarThreadHeader.tsx
• apps/web/src/hooks/useHandleNewThread.test.ts
• apps/web/src/hooks/useHandleNewThread.ts
• apps/web/src/hooks/useSidebarProjectScope.ts
• apps/web/src/lib/chatThreadActions.test.ts
• apps/web/src/lib/chatThreadActions.ts
• apps/web/src/routes/_chat.index.tsx
• apps/web/src/routes/_chat.tsx
• docs/user/thread-sidebar.md

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• apps/web/src/components/Sidebar.logic.ts

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[juliusmarminge]

Note

This comment is posted by Julius' dot

Julius’s triage of #11895 approves scoped sidebar New, keeps Shift+click / chat.newLocal tied to the viewed project, and explicitly leaves chat.new parity for a separate decision. This PR additionally changes chat.new in _chat.tsx and the / landing draft in _chat.index.tsx; #14185 currently has no maintainer reply.

Can a maintainer confirm those two additional entry points belong in the approved scope, or should this PR stay with the sidebar button? The prior-approval rule requires agreement on direction and scope. Leaving this open for that specific decision; the approved sidebar enhancement remains useful.

[nandorocker]

This addresses my accepted request in #11895. I’d be happy to help with verification. Could we move forward with the approved sidebar-button behavior and handle shortcut/landing-page parity separately? I also see the workflows are awaiting maintainer approval.

[liaugust]

+1 on this. I hit it today: with the sidebar filtered to one project, New still opens the project picker instead of starting the thread in that project.

@AI091, the branch now conflicts with main. Could you rebase it? If the maintainers want to land only the sidebar-button part first, which #11895 already approved, splitting chat.new and the / landing draft into a follow-up might help this get merged sooner.

[AI091]

Thanks, rebased onto main and split as suggested. This PR now only changes the sidebar's New button, the part approved in the #11895 triage.

[maria-rcks]

Note

Written by gpt-6.1-sol on behalf of Maria

Merged current main without rebasing and kept this to the sidebar button. It now reuses the sidebar's resolved single-project scope instead of a separate obsolete hook. Shift-click, multiple scopes, and other entry points keep main's behavior.

Blacksmith check:changed passed, including 133 tests. Chrome verified scope switching from another project, draft reuse, Shift-click, the unscoped and multiple-project pickers, and narrow-screen sidebar dismissal. The updated PR body includes the interaction recording.

[joshka]

I've collected the open threads about which project "New thread" starts in (sidebar button, ⌘N, Shift+click, the sidebar filter, mobile, command names) in one Ideas discussion, with options and a proposal: #29849. It may be easier to decide this one against the whole picture there.

🤖 Claude Opus 5.5

[AI091]

@maria-rcks any verdict on this 🙏 ? , having to do two mouse clicks for this is currently my biggest issue in an other wise great experience

[t3dotgg]

Note

🤖 Claude Opus 5.5 responding on behalf of Theo

Closing. This PR has been open for more than 3 weeks, and main has moved a long way since then. If the change still matters, open a fresh PR from current main.