feat(mobile): rename a thread from the row menu

[sideeffffect]

What changed

The thread row long-press menu previously offered only Archive and Delete. This adds a Rename item, matching the web per-thread action menu.

Selecting Rename opens a small dialog prefilled with the current title; confirming dispatches thread.meta.update { title }.

Appears in every thread-row menu variant across both list implementations (the v1 ThreadListRow and the v2 ThreadListV2Row) and on both surfaces (compact Home list and the iPad sidebar).

Why

Renaming a thread is a core action on the web client but was unreachable anywhere in the mobile app.

How

• RenameThreadDialogHost (new) — an imperative, cross-platform text-input dialog styled to match the existing ConfirmDialogHost. React Native's Alert.prompt is iOS-only, so Android needs a custom modal. Mounted once at the app root. Rename stays disabled until the trimmed value is non-empty, and an unchanged title dispatches nothing.
• useThreadListActions gains renameThread, reusing the existing threadEnvironment.updateMetadata command — no new command or contract.
• The row components take an optional onRenameThread prop and render the item when provided.

No server, contract, or shared-runtime changes.

Scope

Split out of the original combined PR per request. Sibling PRs cover the other row-menu actions independently: Regenerate title and Unarchive.

Testing

• tsc --noEmit, vp fmt --check, vp lint: clean
• Mobile unit suite: 617 tests / 99 files pass

Screenshots

I don't have an Android device/emulator here to capture before/after images as CONTRIBUTING.md requests — happy to add them. The change adds "Rename" above the existing Archive/Delete items in the row long-press menu.

🤖 Generated with Claude Code

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Note

Low Risk
Client-only UI and menu wiring that reuses an existing metadata update path; no server or contract changes.

Overview
Adds Rename to thread row long-press menus on Home and the iPad sidebar, for both v1 and v2 list rows, aligning mobile with the web thread menu.

Choosing Rename opens a new cross-platform showRenameThreadDialog modal (mounted via RenameThreadDialogHost at the app root, patterned after ConfirmDialogHost). The field is prefilled with the current title; Rename stays disabled until the trimmed name is non-empty, and confirming an unchanged title skips the update.

useThreadListActions.renameThread drives the flow and calls the existing threadEnvironment.updateMetadata command with the new title, with an alert on failure.

^{Reviewed by Cursor Bugbot for commit d7cb11a. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Add rename thread action to thread row menus in mobile

• Adds a 'Rename' option to the long-press/context menu in both ThreadListRow and ThreadListV2Row, visible when a rename handler is provided.
• Introduces RenameThreadDialogHost, a modal with a prefilled text input and Cancel/Rename actions; confirm is disabled until the trimmed value is non-empty and differs from the original.
• Adds showRenameThreadDialog, an imperative function to trigger the modal from anywhere in the app.
• Wires the rename flow through useThreadListActions, which calls updateMetadata to persist the new title and shows an alert on failure.
• The rename action is available in both the home screen thread list and the navigation sidebar.

^{Macroscope summarized d7cb11a.}

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[macroscopeapp]

Approvability

Verdict: Needs human review

This PR introduces a new user-facing feature (rename thread from row menu) with a new dialog component and integration across multiple screens. While it uses existing APIs and follows established patterns, new capability warrants human review.

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Cursor Bugbot has reviewed your changes using high effort and found 1 potential issue.

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[t3dotgg]

This was added already sorry