[teamleaderleo]

After Share with Me went through on a refused Cloud chat start, nothing happened until the person sent again (#29563, a P2 from #29283's review).

Why: the refusal hands the queued prompt back to the composer (harnessSwitch.fail), and a chat on another machine starts only with a send (run returns when startsOnSend and nothing is queued). The share's chat.harness.retry re-armed the switch with an empty queue, so it waited.

Fix: a share that went through retries, then sends the composer's prompt again, the same way Trust's answer already resends (trustAsk.refused(..., () => composerHandle.current?.send())). Retry after Ask the Owner does the same once the owner has shared; with no share yet it stays a plain retry. Without an onShared handler the card falls back to the old retry.

Tests: SwitchNotice.share.test.tsx checks that a share resends, that without a handler it falls back to a retry, that a recheck which finds the share resends, and that a recheck with no share is a plain retry.

Risk: low. Webview only, 4 files. It only runs after a successful share on the start-refusal card.

#29564 (the pane keeps ownerCloud: false after a share) is left for its own PR: whether a guest counts as owner is a separate decision.

Fixes #29563

🤖 Generated with Claude Code

Agent session: agent session

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Summary by cubic

Fixes Share with Me on a refused Cloud chat start, where after the share went through nothing happened until the person sent again (#29563).

The refusal hands the queued prompt back to the composer, and a chat on another machine starts only with a send, so the share now retries the start and resends the composed prompt, matching how Trust's answer already resends. Retry after Ask the Owner resends once the owner has shared; with no share yet it stays a plain retry. Without an onShared handler the card falls back to the old retry.

Tests cover the resend on share, the fallback without a handler, a recheck that finds the share and resends, and a plain retry when a recheck finds none.

^{Written for commit 53922f6. Summary will update on new commits.}

[github-actions]

cmux status _{(one comment, edited in place; each line is updated by the job that owns it)}

Review 53922f6: HQ feed card · gallery before/after runs · checks

App of this head (app.zip, kept 1 day)

gh workflow run reload-build.yml -R manaflow-ai/cmux --ref feat-cmux-next -f tag=pr29785 -f ref=fix/share-resend-and-owner-state -f platform=macos -f backend_mode=local

Gallery before/after for 53922f6: 16 states rendered, 0 images differ, 1100 more touched states not rendered. Images are in the run's artifact, not on this public PR; the independent review of this head reads them on its own, so the PR needs no hand-made screenshots of these states.

gh run download 41253316610 -R manaflow-ai/cmux -n gallery-advisory-29785-53922f61396c9279fe55bebc7a4daea6b2d2d30b (then read gallery-review.json)

States

State	Theme	Status	Diff	Picked by
agent-pane.chat-width/standard	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.chat-width/standard	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.chat-width/wide	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.chat-width/wide	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.chat-width/wide-blocks	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.chat-width/wide-blocks	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.composer-edge/short-edge	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.composer-edge/short-edge	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.composer-edge/wide-edge	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.composer-edge/wide-edge	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.composer-edge/no-edge	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.composer-edge/no-edge	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.composer-floats/scrolled-to-end	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.composer-floats/scrolled-to-end	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.composer-floats/composer-grown	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.composer-floats/composer-grown	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.continuation-spacing/shipped	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.continuation-spacing/shipped	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.continuation-spacing/two-thirds	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.continuation-spacing/two-thirds	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.continuation-spacing/half-tucked	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.continuation-spacing/half-tucked	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.continuation-spacing/before	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.continuation-spacing/before	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.copy-controls/output	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.copy-controls/output	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.docked-chat/new-chat	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.docked-chat/new-chat	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.docked-chat/after-turn	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.docked-chat/after-turn	Apple System Colors	unchanged	0%	own App.tsx
agent-pane.docked-chat/working	Apple System Colors Light	unchanged	0%	own App.tsx
agent-pane.docked-chat/working	Apple System Colors	unchanged	0%	own App.tsx

_{Pick other states with a Gallery: entry.id, entry.id/variant line in the PR body.}

Shipped in:

• cmux NEXT nightly 1.0.0-nightly.4130052256501 (28aa638015)

[teamleaderleo]

Owned by an agent session · session

[teamleaderleo]

Review (independent Codex gpt-6.1-sol, high, via the review router; full diff from merge base b06e339 to this head): SHIP at 53922f6.

[P2] [follow-up] [App.tsx:11757] - The delayed share callback sends whatever is currently in the composer without verifying that the original refusal/session is still active. If the user navigates or edits/types while sharing is in flight, it can submit an unrelated draft (and attachments) to the wrong chat. Capture and validate the refusal/session generation before retrying and sending.