feat: add tool activation system to reduce context usage by 92%

Implement comprehensive tool management system allowing users to
enable/disable tool groups and reduce Claude Code context usage
from 43.5k tokens (37 tools) to 3.5k tokens (5 tools) in minimal mode.

New Features:
- Tool registry organizing 37 tools into 6 groups (core, sessions,
  monitoring, backup, database, advanced)
- Configuration manager with 3 modes (all/minimal/custom)
- Interactive CLI wizard for easy setup
- Auto-approval config export for Claude Code
- Per-group enable/disable commands

CLI Commands:
- ssh-manager tools list - View current configuration
- ssh-manager tools configure - Interactive setup wizard
- ssh-manager tools enable/disable <group> - Manage groups
- ssh-manager tools reset - Reset to defaults
- ssh-manager tools export-claude - Generate auto-approval config

Files Added:
- src/tool-registry.js - Tool group definitions and helpers
- src/tool-config-manager.js - Configuration management
- cli/commands/tools.sh - CLI commands implementation
- docs/TOOL_MANAGEMENT.md - Complete user guide
- tests/test-tool-registry.js - Test suite (13 tests)

Files Modified:
- src/index.js - Conditional tool registration
- cli/ssh-manager - Integrated tools command
- README.md - Added tool management section
- CLAUDE.md - Updated for AI assistants
- package.json - Version 3.1.0, new test script

Impact:
- 92% context reduction in minimal mode (~40k tokens saved)
- Fewer approval prompts in Claude Code
- Backward compatible (no config = all tools enabled)
- Zero breaking changes

All tests passing (13 new + all existing tests)

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

Co-Authored-By: Claude <[email protected]>

Author: Jérémy Christillin

CLAUDE.md

@@ -51,6 +51,22 @@ ssh-manager codex convert to-toml            # Convert .env to TOML
 ssh-manager codex convert to-env             # Convert TOML to .env
 ```
 
+### Tool Management (NEW in v3.1)
+```bash
+ssh-manager tools list                        # Show all tools and status
+ssh-manager tools configure                   # Interactive configuration wizard
+ssh-manager tools enable <group>              # Enable a tool group
+ssh-manager tools disable <group>             # Disable a tool group
+ssh-manager tools reset                       # Reset to defaults (all tools)
+ssh-manager tools export-claude               # Export auto-approval config
+```
+
+**Tool Groups**: core (5), sessions (4), monitoring (6), backup (4), database (4), advanced (14)
+
+**Modes**: all (37 tools, ~43.5k tokens), minimal (5 tools, ~3.5k tokens), custom (variable)
+
+See [docs/TOOL_MANAGEMENT.md](docs/TOOL_MANAGEMENT.md) for complete guide.
+
 ### Development and Testing
 ```bash
 npm start                                     # Start MCP server (requires stdin)

README.md

@@ -103,6 +103,54 @@ This release adds **12 new MCP tools** transforming SSH Manager into a comprehen
 
 ---
 
+## ⚙️ Tool Management & Context Optimization
+
+**NEW in v3.1**: Reduce Claude Code context usage by 92% with tool activation management!
+
+MCP SSH Manager includes **37 tools** organized into **6 groups**. By default, all tools are enabled, but you can optimize for your specific workflow:
+
+### Quick Setup
+
+```bash
+# Interactive configuration wizard
+ssh-manager tools configure
+
+# View current configuration
+ssh-manager tools list
+
+# Enable/disable specific groups
+ssh-manager tools enable monitoring
+ssh-manager tools disable backup
+```
+
+### Configuration Modes
+
+| Mode | Tools | Context Usage | Best For |
+|------|-------|---------------|----------|
+| **All** (default) | 37 tools | ~43.5k tokens | Full feature set, most users |
+| **Minimal** | 5 tools | ~3.5k tokens | Basic SSH operations only |
+| **Custom** | 5-37 tools | Varies | Tailored to your workflow |
+
+### Tool Groups
+
+- **Core** (5 tools) - Always enabled: list, execute, upload, download, sync
+- **Sessions** (4 tools) - Persistent SSH sessions
+- **Monitoring** (6 tools) - Health checks, service status, process management
+- **Backup** (4 tools) - Database and file backups
+- **Database** (4 tools) - MySQL, PostgreSQL, MongoDB operations
+- **Advanced** (14 tools) - Deployment, sudo, tunnels, groups, aliases, etc.
+
+### Benefits
+
+- **92% context reduction** in minimal mode (~40k tokens saved)
+- **Fewer approval prompts** in Claude Code
+- **Faster loading** and cleaner interface
+- **Auto-approval configuration** export for Claude Code
+
+📖 [**Complete Tool Management Guide →**](docs/TOOL_MANAGEMENT.md)
+
+---
+
 ## 🔍 Alternative Search Terms
 
 Looking for: