chore: release v2.5.0 with content optimization and script externalization

- Remove ~1048 lines of non-Claude-Code-specific content (-10.9%)
- Externalize health check and reinstall scripts to examples/scripts/
- Clean up table of contents and fix broken references
- Update version numbers and statistics across all documentation

Removed sections:
- DeepSeek Integration (200 lines)
- Git Archaeology Pattern (250 lines)
- Emergency Hotfix Checklist (140 lines)
- Maturity Model & Success Metrics (95 lines)
- Generic Prompt Templates (105 lines)
- Task-specific checklists

New files:
- examples/scripts/check-claude.{sh,ps1}
- examples/scripts/clean-reinstall-claude.{sh,ps1}

Stats: 9593 → 8545 lines, focus on Claude Code-specific content

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

examples/scripts/check-claude.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+echo -e "\n=== Claude Code Health Check ==="
+echo -e "\n--- Node & npm ---"
+node --version
+npm --version
+
+echo -e "\n--- Claude Installation ---"
+which claude
+if [ $? -eq 0 ]; then
+    echo "✓ Claude found in PATH"
+else
+    echo "✗ Claude not in PATH"
+fi
+
+echo -e "\n--- Running Claude Doctor ---"
+if claude doctor; then
+    echo "✓ Claude doctor completed"
+else
+    echo "✗ Claude doctor failed"
+fi
+
+echo -e "\n--- API Key Status ---"
+if [ -n "$ANTHROPIC_API_KEY" ]; then
+    echo "✓ ANTHROPIC_API_KEY is set"
+else
+    echo "✗ ANTHROPIC_API_KEY not set"
+fi
+
+echo -e "\n--- MCP Servers ---"
+claude mcp list
+
+echo -e "\n--- Config Location ---"
+if [ -f ~/.claude.json ]; then
+    echo "✓ Config found at: ~/.claude.json"
+else
+    echo "⚠ No config file at: ~/.claude.json"
+fi
+
+echo -e "\n=== Health Check Complete ==="