[Bug] Claude Code hangs indefinitely with worktree probe timeout in specific project directory

Bug Description
Body: Claude Code hangs indefinitely on any prompt in one specific project directory. The same account and machine work normally in other directories. The request is never issued. /usage after ~2 minutes of a hanging hello? in a fresh session: Total duration (API): 0s Usage: 0 input, 0 output, 0 cache read, 0 cache write Debug log shows the client preparing the message and then going silent — only heartbeats and presence pulses after: 21:06:22.745 [DEBUG] Sending 23 skills via attachment (initial) 21:06:22.776 [DEBUG] [remote-bridge] Sending 1 message(s) 21:06:24.388 [DEBUG] [presence ...] terminal focus → blurred (nothing further) Possibly related, appears in every session in this directory: [bridge:worktree] collectWorktreeState failed: worktree probe timed out [remote-bridge] worktree_state → <other-org>/<other-repo>: null The named repo is a different project I collaborate on, not the directory I'm running in. Reproduces across: v2.1.259 and v2.1.260, Haiku 4.5 and Sonnet 5, fresh sessions with empty context. Ruled out: slash commands work (local, no API); a different directory on the same machine works; MCP servers all authenticated; plugin with 375 skills disabled (skill payload dropped 90k→10k chars); 0 hooks in registry; no quota issue (6% session, 26% weekly); no open incidents on status.claude.com; project settings.local.json contains only a Bash permission allowlist. Env: macOS, native install at ~/.local/bin/claude, Claude Pro. Replace the repo placeholder with the real name or leave it redacted — your call, it's your friend's project. That worktree line is the detail I'd most want them to look at, since it's the only thing in the logs pointing at cross-project state.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.260
• Feedback ID: 840a4a89-4502-4dc3-9b20-f24fb06933d2

Errors

[]