feat(A1.7): Add install_skill MCP tool for one-command workflow automation

Implements complete end-to-end skill installation in a single command:
fetch_config → scrape_docs → enhance_skill_local → package_skill → upload_skill

Changes:
- MCP Tool: Added install_skill_tool() to server.py (~300 lines)
  - Input validation (config_name XOR config_path)
  - 5-phase orchestration with error handling
  - Dry-run mode for workflow preview
  - Mandatory AI enhancement (30-60 sec, 3/10→9/10 quality boost)
  - Auto-upload to Claude (if ANTHROPIC_API_KEY set)

- CLI Integration: New install command
  - Created install_skill.py CLI wrapper (~150 lines)
  - Updated main.py with install subcommand
  - Added entry point to pyproject.toml

- Testing: Comprehensive test suite
  - Created test_install_skill.py with 13 tests
  - Tests cover validation, dry-run, orchestration, error handling
  - All tests passing (13/13)

- Documentation: Updated all user-facing docs
  - CLAUDE.md: Added MCP tool (10 tools total) and CLI examples
  - README.md: Added prominent one-command workflow section
  - FLEXIBLE_ROADMAP.md: Marked A1.7 as complete

Features:
- Zero friction: One command instead of 5 separate steps
- Quality guaranteed: Mandatory enhancement ensures 9/10 quality
- Complete automation: From config to uploaded skill
- Intelligent: Auto-detects config type (name vs path)
- Flexible: Dry-run, unlimited, no-upload modes
- Well-tested: 13 unit tests with mocking

Usage:
  skill-seekers install --config react
  skill-seekers install --config configs/custom.json --no-upload
  skill-seekers install --config django --unlimited
  skill-seekers install --config react --dry-run

Closes #204

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

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

CLAUDE.md

@@ -67,14 +67,15 @@ This file provides guidance to Claude Code (claude.ai/code) when working with co
 
 ## 🔌 MCP Integration Available
 
-**This repository includes a fully tested MCP server with 9 tools:**
+**This repository includes a fully tested MCP server with 10 tools:**
 - `mcp__skill-seeker__list_configs` - List all available preset configurations
 - `mcp__skill-seeker__generate_config` - Generate a new config file for any docs site
 - `mcp__skill-seeker__validate_config` - Validate a config file structure
 - `mcp__skill-seeker__estimate_pages` - Estimate page count before scraping
 - `mcp__skill-seeker__scrape_docs` - Scrape and build a skill
 - `mcp__skill-seeker__package_skill` - Package skill into .zip file (with auto-upload)
-- `mcp__skill-seeker__upload_skill` - Upload .zip to Claude (NEW)
+- `mcp__skill-seeker__upload_skill` - Upload .zip to Claude
+- `mcp__skill-seeker__install_skill` - **NEW!** Complete one-command workflow (fetch → scrape → enhance → package → upload)
 - `mcp__skill-seeker__split_config` - Split large documentation configs
 - `mcp__skill-seeker__generate_router` - Generate router/hub skills
 
@@ -188,6 +189,53 @@ skill-seekers package output/godot/
 # Result: godot.zip ready to upload to Claude
 ```
 
+### **NEW!** One-Command Install Workflow (v2.1.1)
+
+The fastest way to install a skill - complete automation from config to uploaded skill:
+
+```bash
+# Install React skill from official configs (auto-uploads to Claude)
+skill-seekers install --config react
+# Time: 20-45 minutes total (scraping 20-40 min + enhancement 60 sec + upload 5 sec)
+
+# Install from local config file
+skill-seekers install --config configs/custom.json
+
+# Install without uploading (package only)
+skill-seekers install --config django --no-upload
+
+# Unlimited scraping (no page limits - WARNING: can take hours)
+skill-seekers install --config godot --unlimited
+
+# Preview workflow without executing
+skill-seekers install --config react --dry-run
+
+# Custom output directory
+skill-seekers install --config vue --destination /tmp/skills
+```
+
+**What it does automatically:**
+1. ✅ Fetches config from API (if config name provided)
+2. ✅ Scrapes documentation
+3. ✅ **AI Enhancement (MANDATORY)** - 30-60 sec, quality boost from 3/10 → 9/10
+4. ✅ Packages skill to .zip
+5. ✅ Uploads to Claude (if ANTHROPIC_API_KEY set)
+
+**Why use this:**
+- **Zero friction** - One command instead of 5 separate steps
+- **Quality guaranteed** - Enhancement is mandatory, ensures professional output
+- **Complete automation** - From config name to uploaded skill
+- **Time savings** - Fully automated workflow
+
+**Phases executed:**
+```
+📥 PHASE 1: Fetch Config (if config name provided)
+📖 PHASE 2: Scrape Documentation
+✨ PHASE 3: AI Enhancement (MANDATORY - no skip option)
+📦 PHASE 4: Package Skill
+☁️  PHASE 5: Upload to Claude (optional)
+```
+
 ### Interactive Mode
 
 ```bash