* perf(tmux): batch session queries in gt down to reduce N+1 subprocess calls
Add SessionSet type to tmux package for O(1) session existence checks.
Instead of calling HasSession() (which spawns a subprocess) for each
rig/session during shutdown, now calls ListSessions() once and uses
in-memory map lookups.
Changes:
- internal/tmux/tmux.go: Add SessionSet type with GetSessionSet() and Has()
- internal/cmd/down.go: Use SessionSet for dry-run checks and session stops
- internal/session/town.go: Add StopTownSessionWithCache() variant
- internal/tmux/tmux_test.go: Add test for SessionSet
With 5 rigs, this reduces subprocess calls from ~15 to 1 during shutdown
preview, saving 60-150ms of execution time.
Closes: gt-xh2bh
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
* perf(tmux): optimize SessionSet to avoid intermediate slice allocation
- Build map directly from tmux output instead of calling ListSessions()
- Use strings.IndexByte for efficient newline parsing
- Pre-size map using newline count to avoid rehashing
- Simplify nil checks in Has() and Names()
* fix(sling): restore bd cook directory context for formula-on-bead mode
The bd cook command needs to run from the target rig's directory to
access the correct formula database. This was accidentally removed
in a previous commit, causing TestSlingFormulaOnBeadRoutesBDCommandsToTargetRig
to fail.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
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