This commit implements Phase 3b/3c architectural improvements:
### New kugetsu CLI commands:
- `kugetsu status` - Check initialization status (replaces kugetsu-helper check-status)
- `kugetsu delegate <msg>` - Send message to PM agent (new command)
- `kugetsu doctor [--fix]` - Diagnose and fix kugetsu issues
### PM Context Injection:
- kugetsu init now reads ~/.kugetsu/pm-agent.md (if exists) and injects
it into the PM agent session at creation time
- PM context is loaded ONCE at init, not on every delegation
- This improves efficiency - kugetsu-pm content read once, not 10 times
### kugetsu-chat updated:
- Now uses `kugetsu delegate` instead of kugetsu-helper
- Now uses `kugetsu status` instead of kugetsu-helper check-status
- Simplified - no longer depends on kugetsu-helpers
### kugetsu continue:
- Removed strict issue-ref format validation
- Now accepts any session name that is tracked in index.json["issues"]
- Issue-ref format is a guideline, not a hard requirement
### Documentation updated:
- phase3a-setup.md - Updated to reflect new kugetsu commands
- kugetsu-install.sh - Simplified Phase 3a setup instructions
### Breaking changes:
- kugetsu-helpers is no longer required for Phase 3a Chat Agent
- kugetsu-chat skill v3.0 now requires kugetsu CLI with new commands
- sshd-setup.sh: Auto-detect OS (Debian/Ubuntu/Fedora/RHEL/CentOS)
- Use appropriate package manager (apt-get vs dnf)
- Add verification steps after each major phase
- Exit with error if sshd installation fails
- Exit with error if sshd doesn't start successfully
- Add troubleshooting section in output
- kugetsu-install.sh: Add verification that kugetsu binary exists
- kugetsu-setup.md: Document multi-distro installation commands
- skills/kugetsu/SKILL.md: Agent skill documentation following agentskills.io spec
- skills/kugetsu/scripts/kugetsu: Shell wrapper for opencode session management
- Commands: start, list [--all], resume, stop, help
- State tracking: used → idle (graceful) or left (interrupted)
- Auto-fill message on resume
- Confirmation prompt when resuming used session
- skills/kugetsu/scripts/kugetsu-install.sh: Installation script for users
Implements Phase 1 of issue #11 - basic session management layer
for remote agent control without Hermes dependency.
