claude-multi Files

Added

• doctor fix auto-installs pinned Claude binary: when the compatible binary at ~/.claude-multi/bin is missing or running an incompatible version, doctor fix now installs Claude Code v2.1.153 (the last version before 3rd-party API breakage) before fixing wrappers. Works from both CLI and TUI.
• Version verification on pinned binary: getPinnedBinaryVersion() reads the installed version and triggers a reinstall if it's v2.1.154+.
• COMPATIBLE_CLAUDE_VERSION constant (src/version.ts): single source of truth for the pinned version (2.1.153).
• PINNED_CLAUDE_BIN in src/paths.ts: shared path constant (previously duplicated in wrapper.ts and health.ts).

Changed

• Global version banner: now reads "Run 'claude-multi doctor fix' to install a compatible version" instead of the passive "wait for a fix" message.
• TUI "Fix wrappers" action: installs the pinned binary first if missing, then fixes wrappers. Both the menu option and the f key in the health screen follow this flow.
• Wrapper scripts now use pinned binary by default: getClaudePath() checks ~/.claude-multi/bin before falling back to global which claude, so new instances automatically use the compatible version.

Fixed

• Tests: integration tests updated for current version and help output.