vikingowl 80f6e788f4 feat: implement server hub for multi-device agent management ...

Server Package (internal/server/):
- Registry: Agent registration with approval workflow, persistence
- Hub: Connection manager for connected agents, message routing
- GRPCServer: mTLS-enabled gRPC server with interceptors
- SSEBridge: Bridges agent metrics to browser SSE clients

Registry Features:
- JSON file-based persistence
- Agent lifecycle: pending -> approved -> connected -> offline
- Revocation support for certificate-based agent removal
- Automatic last-seen tracking

Hub Features:
- Bidirectional gRPC stream handling
- MetricsSubscriber interface for metric distribution
- Stale connection detection and cleanup
- Broadcast and per-agent command sending

gRPC Server:
- Unary and stream interceptors for auth
- Agent ID extraction from mTLS certificates
- Delegation to Hub for business logic

Agent Management API:
- GET/DELETE /api/v1/agents - List/remove agents
- GET /api/v1/agents/pending - Pending approvals
- POST /api/v1/agents/pending/:id/approve|reject
- GET /api/v1/agents/:id/metrics - Latest agent metrics
- GET /api/v1/agents/connected - Connected agents

Server Mode Startup:
- Full initialization of registry, hub, gRPC, SSE bridge
- Graceful shutdown with signal handling
- Agent mode now uses the agent package

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2025-12-28 07:53:23 +01:00

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