Adds support for alternative AI runtime backends (Codex, OpenCode) alongside
the default Claude backend through a runtime abstraction layer.
- internal/runtime/runtime.go - Runtime-agnostic helper functions
- Extended RuntimeConfig with provider-specific settings
- internal/opencode/ for OpenCode plugin support
- Updated session managers to use runtime abstraction
- Removed unused ensureXxxSession functions
- Fixed daemon.go indentation, updated terminology to runtime
Backward compatible: Claude remains default runtime.
Co-Authored-By: Ben Kraus <ben@cinematicsoftware.com>
Co-Authored-By: Cameron Palmer <cameronmpalmer@users.noreply.github.com>
The orphan-processes check previously killed any Claude process without
a tmux ancestor, which incorrectly targeted user's personal Claude
sessions running in regular terminals.
Now the check is informational only:
- Changed from FixableCheck to BaseCheck (no auto-fix)
- Returns StatusOK with details listing processes outside tmux
- Message advises user to verify processes are expected
- Removed Fix method and related helpers
The orphan-sessions check remains fixable since it only targets gt-*
sessions that don't match valid Gas Town patterns.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
