feat(web): drag sidebar threads between categories

[tarik02]

What Changed

• Backport feat(web): drag sidebar threads between categories pingdotgg/t3code#8001 onto the fork's current main.
• Allow dragging threads between Pinned, Regular, Snoozed, and Settled on web and desktop.
• Apply the destination lifecycle state on drop. Pinned keeps the selected position; the other categories use their normal sort order. Dropping into Snoozed opens the existing duration menu.
• Replace the pinned-only sorter with one dnd-kit board and preserve the fork's F2 thread rename shortcut.
• Keep mobile lifecycle menus consistent with the category rules.

Why

The sidebar previously allowed reordering only inside Pinned. This backport brings the upstream cross-category drag behavior to the fork without retaining the earlier divergent implementation.

UI Changes

Before: drag and drop only reordered threads within Pinned.

After: the upstream recording covers pinned reorder, moves between categories, the snooze menu, card-to-compact morphing, auto-scroll, and viewport stability.

recording-a377fc69-049a-472c-9a65-b0a7aa970521.mp4

Verification

• vp fmt --check <24 changed files>
• vp lint <22 changed TypeScript files> --report-unused-disable-directives
• vp run --filter @t3tools/web --filter t3 --filter @t3tools/mobile --filter @t3tools/contracts typecheck
• vp test run apps/server/src/orchestration/decider.pinned.test.ts apps/server/src/orchestration/decider.snoozed.test.ts apps/web/src/components/Sidebar.dnd.logic.test.ts apps/web/src/components/Sidebar.logic.test.ts (158 passed)
• git diff --check

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes
• I included a video for animation/interaction changes

Model: GPT-5.6-sol
Harness: Codex in T3 Code

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Gate snooze drops on exclusive-lifecycle support

When the current web or desktop client connects to a pre-313 server, this check enables cross-section snooze drops using the already-existing threadSnooze capability. The parent server advertises that capability, but its thread.snooze and thread.unsnooze handlers preserve pinnedAt and settledOverride; consequently, a thread dragged from Pinned or Settled into Snooze returns to its old section after Wake or expiry instead of Regular as the new UI promises. Version this semantic with a new capability, or perform compatible cleanup before enabling these drops.

AGENTS.md reference: AGENTS.md:L19-L21

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[github-actions]

Thread transfer impact

⚠️ The latest CI run did not produce a thread transfer result for fe06825.

This comment will update automatically after the next completed run.