feat: implement connect host command with native SSH

- Add connect command with native SSH (default) and direct Go SSH (--direct) modes
- Support host lookup by name or ID
- Build SSH arguments for system SSH client
- Include timeout configuration flag
- Add comprehensive tests for command and SSH arg building
- Update project state documentation

PROJECT_STATE.md

@@ -2,7 +2,7 @@
 
 > **Purpose**: Enable seamless continuation of development by any agent/LLM across sessions
 > 
-> **Last Updated**: 2024-06-23 (Session 4)
+> **Last Updated**: 2024-06-23 (Session 5)
 > **Current Status**: Implementation In Progress - Tasks 1-8 Complete
 > **Phase**: MVP Development (Phase 1)
 
@@ -33,7 +33,7 @@
 ✅ **Bug Fix**: Fixed deadlock in JSON storage (RLock within Lock)
 
 ### What Needs to Happen Next
-🔄 **Task 9+**: Connect command, edit/remove commands
+🔄 **Task 10+**: Edit/remove commands, TUI implementation
 🔄 Build and test core features
 🔄 Prepare MVP release
 
@@ -52,12 +52,12 @@
 | **Errors** | ✅ 100% | AppError + ConnectionError + SSH error handler |
 | **SSH Client** | ✅ 100% | Password + key auth, Execute, Connect/Close |
 | **CLI Framework** | ✅ 100% | Cobra root, version, completion commands |
-| **CLI Commands** | � 25% | add + list commands done; connect/edit/remove pending |
+| **CLI Commands** | 🟡 40% | add + list + connect commands done; edit/remove pending |
 | **TUI** | 🔲 0% | Terminal user interface |
-| **Testing** | 🟡 40% | Error + SSH + add + list tests passing |
+| **Testing** | 🟡 45% | Error + SSH + add + list + connect tests passing |
 | **Documentation** | 🔲 0% | Usage guides and API docs |
 
-### Overall Progress: **~55% Complete** (Tasks 1-8 done)
+### Overall Progress: **~60% Complete** (Tasks 1-9 done)
 
 ---
 
@@ -134,7 +134,15 @@
   - `cmd/hostkeeper/list.go` — list hosts with filter (group/tag), sort, table/JSON/wide output formats
   - `cmd/hostkeeper/list_test.go` — tests for list command (filtering, formatting)
 
-#### 🔲 Task 9-14: Remaining Tasks
+#### ✅ Task 9: Connect Host Command
+- **Status**: ✅ Completed
+- **Priority**: CRITICAL
+- **Deliverables**: Connect to saved SSH hosts via native SSH or Go SSH client
+- **Files Created**:
+  - `cmd/hostkeeper/connect.go` — Connect command with native SSH (default) and direct Go SSH (--direct) modes
+  - `cmd/hostkeeper/connect_test.go` — Tests for command existence, flags, and SSH arg building
+
+#### 🔲 Task 10-14: Remaining Tasks
 - **Status**: Not Started
 - **Details**: See `docs/plans/2024-06-22-hostkeeper-implementation.md`
 
@@ -143,7 +151,7 @@
 ## 🗺️ Development Roadmap
 
 ### Current Week Focus
-**Target**: Complete Tasks 7+ (Core CLI Commands)
+**Target**: Complete Tasks 9+ (Core CLI Commands)
 
 ### This Sprint
 - [x] Project setup and dependencies
@@ -152,9 +160,12 @@
 - [x] Error handling framework
 - [x] SSH client implementation
 - [x] CLI framework setup
+- [x] Add host command
+- [x] List hosts command
+- [x] Connect host command
 
 ### Next Sprint
-- [ ] CLI commands (add, list, connect)
+- [ ] CLI commands (edit, remove)
 - [ ] Basic TUI implementation
 - [ ] Export/import functionality
 
@@ -348,7 +359,7 @@ go test ./... -watch
 ## 🎯 Success Criteria
 
 ### MVP Success Metrics
-- ✅ Can establish SSH connections
+- ✅ Can establish SSH connections (via native SSH)
 - ✅ Can manage multiple hosts
 - ✅ Can perform SFTP operations
 - ✅ Can export/import credentials
@@ -516,7 +527,8 @@ cat go.mod
 
 ### Milestone Tracking
 - [x] Milestone 1: Foundation (Tasks 1-6) - Week 1 ✅ COMPLETE
-- [ ] Milestone 2: Core Features (Tasks 7-10) - Week 2-3
+- [x] Task 7-9: Add, List, Connect commands ✅ COMPLETE
+- [ ] Milestone 2: Core Features (Tasks 7-10) - Week 2-3 (80% complete)
 - [ ] Milestone 3: Polish & Release (Tasks 11-14) - Week 4
 
 ---