Fix remote Main loops closing on connect: the pane launches a sketch, not graphcoded (#253)

[scgopi]

Fixes #253.

What was wrong

A Main (sketch) loop opened on a remote project never reached its agent. The reporter's transcript shows the whole failure:

── Loop session is not running; waiting for graphcoded to start it. ──
shell closed: exit status 255
── Connection failed (exit 1). Retrying in 1s. Press Ctrl-C to stop. ──
── Remote session ended while disconnected. ──
Process exited. Press any key to close the terminal.

The remote connect dial in GhosttyTerminalView+Remote.remoteAgentScripts splits a missing session by owner: a turn-based loop restores itself, everything else waits for graphcoded. That split was written when the only attended type was turn-based (8a27eb1, 192e450, Aug 11–12). The sketch type landed three days later (5f7e85b) as a second attended type (runsUnattended is goal-or-time only, so the daemon deliberately never ensures a sketch) and never taught the remote dial about itself.

So a remote sketch:

1. connect — no session, not turn-based → "waiting for graphcoded", exit 255. Nothing will ever start it.
2. In a Codespace gh flattens every nonzero exit to 1, which the reconnect loop retries.
3. reconnect — no session, and no boot marker (only a fresh launch writes one) → the "same boot" branch reads as the loop finished while disconnected → exit 0, pane closes.

Local sketches were unaffected: the local pane has no such gate.

The fix

• LoopType.runsUnattended is now the single rule for who launches a loop; LoopNode.runsUnattended delegates to it.
• Both remote dials gate the pane-owned restore on !loopType.runsUnattended, so a sketch gets the same resume-or-fresh launch a turn-based loop gets, on connect and behind a proven reboot.
• Regression tests in RemoteLoopSurvivalTests for the Claude and Copilot (the reporter's backend) sketch dials.

Verification

• xcodebuild test in a worktree: 1508 tests in 156 suites passed (1506 before, +2 added), both new tests green.
• swiftlint 0 errors, swift format lint --strict clean on the changed files.

🤖 Generated with Claude Code

https://claude.ai/code/session_01Pxwzz1AZnVE3peZ8qMejLa