chore: Disable AI chat when workbenches exist

[maciaszczykm]

Test Plan

Test environment: local

Checklist

• I have added a meaningful title and summary to convey the impact of this PR to a user.
• If required, I have updated the Plural documentation accordingly.
• I have added tests to cover my changes.
• I have deployed the agent to a test environment and verified that it works as expected (required only when changing agent code).

Plural Flow: console

[linear]

PROD-5144

[soffi-ai]

Soffi AI Summary

This PR disables the legacy AI chat/thread experience in the UI when workbenches exist, effectively routing users to the newer Workbench-based AI experience instead of the old chatbot/thread flow.

The core motivation is to progressively sunset the old AI chat interface in favor of Workbenches. When a user has workbenches available, the "Chat threads" tab is hidden from the AI section, the Command Palette's Threads tab is suppressed, the floating ChatbotButton is hidden, and navigating directly to the threads URL redirects to the Workbenches page. All of this is gated on a new useWorkbenchOptions hook (extracted from SendInsightToWorkbench.tsx into its own shared module) that queries whether workbenches exist and exposes a confirmedNoWorkbenches boolean — used across multiple components to gate the legacy chat surface. A complementary useLegacyAiChatEnabled hook is added to centralize this derived state for components like the Chatbot and ChatbotButton. The useWorkbenchOptions hook is also wired into AIContext so it is broadly accessible without prop-drilling.

Commits

Commit	Summary
27a8d44	Adds the useWorkbenchOptions hook as a standalone module, extracted and shared across components.
d75e67c	Adds the useLegacyAiChatEnabled hook, which combines the aiEnabled flag and confirmedNoWorkbenches check to determine whether the old chat UI should be shown.
6882271	Wires up workbench detection across the UI: hides the 'Chat threads' tab and redirects the threads route to Workbenches when workbenches exist; suppresses the Command Palette Threads tab and ChatbotButton in the same condition.
8d5e0f1	Merge from master to incorporate upstream changes.
8714498	Applies a review suggestion, likely a minor refinement to hook usage or component logic.

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Updated: 2026-08-24 14:39 UTC

Deploy in Soffi

[maciaszczykm]

@greptileai

[greptile-apps]

Greptile Summary

The PR disables legacy AI chat surfaces when workbenches exist or workbench availability cannot be confirmed.

• Adds a shared workbench-availability hook with explicit loading, error, and confirmed-empty states.
• Hides legacy chat navigation, launchers, buttons, and command-palette history unless no workbenches are confirmed.
• Prevents /ai/threads from rendering while availability loads and redirects when workbenches exist or the query fails.

Confidence Score: 5/5

The PR appears safe to merge.

The previously reported thread-route failure is fixed: loading renders a skeleton instead of the thread outlet, while workbench presence or a query error redirects away, leaving no blocking failure.

Important Files Changed

Filename	Overview
assets/src/components/ai/AI.tsx	Gates the chat-thread tab and outlet on confirmed workbench absence; the revised loading and redirect handling closes the previously reported fail-open route.
assets/src/components/workbenches/useWorkbenchOptions.ts	Centralizes workbench query state and distinguishes confirmed absence from loading and query errors.
assets/src/components/ai/useLegacyAiChatEnabled.ts	Combines AI configuration with confirmed workbench absence into a shared legacy-chat capability gate.
assets/src/components/ai/AIContext.tsx	Prevents opening legacy chat and closes an existing chat panel when the capability becomes unavailable.
assets/src/components/layout/TopLevelSidePanel.tsx	Filters and clears legacy AI panel requests when legacy chat is disabled.
assets/src/components/commandpalette/CommandPalette.tsx	Removes thread history navigation and falls back to commands when legacy chat is unavailable.

_{Reviews (2): Last reviewed commit: "apply review suggestion" | Re-trigger Greptile}

[maciaszczykm]

@greptileai