Fix ~50 errcheck warnings across the codebase:
- Add explicit `_ =` for intentionally ignored error returns (cleanup,
best-effort operations, etc.)
- Use `defer func() { _ = ... }()` pattern for defer statements
- Handle tmux SetEnvironment, KillSession, SendKeysRaw returns
- Handle mail router.Send returns
- Handle os.RemoveAll, os.Rename in cleanup paths
- Handle rand.Read returns for ID generation
- Handle fmt.Fprint* returns when writing to io.Writer
- Fix for-select with single case to use for-range
- Handle cobra MarkFlagRequired returns
All tests pass. Code compiles without errors.
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- Replace custom contains() with strings.Contains in init.go
- Make session stop --force flag actually work
- Update session.Manager.Stop() to accept force parameter
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- status: Show town status with rig/polecat/witness counts (--json supported)
- prime: Output role context based on current directory
- init: Initialize a git repo as a Gas Town rig
Closes gt-u1j.10
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
