feat: enhance repair command to recreate core agents and default workspace

[aronchick]

Summary

Enhance the repair command to be more comprehensive by ensuring core agents and a default workspace exist after cleanup. This addresses ROADMAP.md P1 "Agent restart" by making repair more robust and reducing the need for manual intervention.

Changes

CLI (internal/cli/cli.go)

• Added ensureCoreAgents() helper to check and create missing core agents
• Added createCoreAgent() to create individual core agents (supervisor, merge-queue, pr-shepherd)
• Added ensureDefaultWorkspace() to create default workspace if none exist
• Updated localRepair() to call these helpers after cleanup
• Improved output format to show removed/cleaned/created items separately

Daemon (internal/daemon/daemon.go)

• Added ensureCoreAgents() method mirroring CLI logic
• Added spawnCoreAgent() to spawn individual core agents
• Added ensureDefaultWorkspace() to create default workspace via tmux
• Updated handleRepairState() to recreate missing agents
• Updated response to include agents_created and workspaces_created counts

Tests (internal/cli/cli_test.go)

• TestRepairEnsuringCoreAgents: Verifies supervisor and merge-queue creation
• TestRepairEnsuringPRShepherdInForkMode: Verifies fork mode behavior
• TestRepairDoesNotDuplicateAgents: Ensures existing agents aren't replaced

Behavior

Before

$ multiclaude repair
Repairing state...
✓ Local repair completed
  Removed 2 dead agent(s)
  Fixed 3 issue(s)

After

$ multiclaude repair
Repairing state...

Ensuring core agents for repository: my-repo
  Creating missing supervisor agent...
  Creating missing merge-queue agent...
  Creating default workspace 'my-default-2'...

✓ Local repair completed
  Removed: 2 dead agent(s)
  Cleaned: 3 orphaned resource(s)
  Created: 2 core agent(s)
  Created: 1 default workspace(s)

Key Features

1. Recreates missing supervisor: If supervisor agent is missing, creates it
2. Recreates merge-queue/pr-shepherd: Based on fork mode configuration
3. Creates default workspace: If no workspaces exist, creates "my-default-2"
4. No duplication: Skips agents/workspaces that already exist
5. Better visibility: Shows what was removed vs created

Testing

All tests pass including new comprehensive repair tests:

$ go test ./...
ok  	github.com/dlorenc/multiclaude/internal/cli	10.200s
ok  	github.com/dlorenc/multiclaude/internal/daemon	3.809s

Alignment with ROADMAP.md

This change aligns with ROADMAP.md P1 "Agent restart": making the repair command more robust so agents can be automatically restored without manual intervention. This improves the "Reliable worker lifecycle" goal.

🤖 Generated with Claude Code

[buggtb]

Superseded by PR #327

PR #327 contains the same feature with an additional lint fix. This PR is superseded and likely doesn't need to be merged separately.

🤖 Merge-queue agent