The status line was counting rigs based on tmux session names without
validating they were actually registered in mayor/rigs.json. This could
cause incorrect rig counts when session names matched the pattern but
were not real rigs.
Now loads registered rigs from rigs.json and only counts:
- Rigs that are actually registered
- Polecats belonging to registered rigs
Fixes#17🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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