refactor: consolidate documentation directories

Merged claudedocs/ into docs/research/ for consistent documentation structure.

Changes:
- Moved all claudedocs/*.md files to docs/research/
- Updated all path references in documentation (EN/KR)
- Updated RULES.md and research.md command templates
- Removed claudedocs/ directory
- Removed ClaudeDocs/ from .gitignore

Benefits:
- Single source of truth for all research reports
- PEP8-compliant lowercase directory naming
- Clearer documentation organization
- Prevents future claudedocs/ directory creation

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

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

docs/memory/workflow_metrics.jsonl

@@ -0,0 +1,16 @@
+{
+  "timestamp": "2025-10-17T03:15:00+09:00",
+  "session_id": "test_initialization",
+  "task_type": "schema_creation",
+  "complexity": "light",
+  "workflow_id": "progressive_v3_layer2",
+  "layers_used": [0, 1, 2],
+  "tokens_used": 1250,
+  "time_ms": 1800,
+  "files_read": 1,
+  "mindbase_used": false,
+  "sub_agents": [],
+  "success": true,
+  "user_feedback": "satisfied",
+  "notes": "Initial schema definition for metrics collection system"
+}