docs: add comprehensive development documentation

- Add architecture overview
- Add PM Agent improvements analysis
- Add parallel execution architecture
- Add CLI install improvements
- Add code style guide
- Add project overview
- Add install process analysis

docs/Development/pm-agent-improvements.md

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+# PM Agent Improvement Implementation - 2025-10-14
+
+## Implemented Improvements
+
+### 1. Self-Correcting Execution (Root Cause First) ✅
+
+**Core Change**: Never retry the same approach without understanding WHY it failed.
+
+**Implementation**:
+- 6-step error detection protocol
+- Mandatory root cause investigation (context7, WebFetch, Grep, Read)
+- Hypothesis formation before solution attempt
+- Solution must be DIFFERENT from previous attempts
+- Learning capture for future reference
+
+**Anti-Patterns Explicitly Forbidden**:
+- ❌ "エラーが出た。もう一回やってみよう"
+- ❌ Retry 1, 2, 3 times with same approach
+- ❌ "Warningあるけど動くからOK"
+
+**Correct Patterns Enforced**:
+- ✅ Error → Investigate official docs
+- ✅ Understand root cause → Design different solution
+- ✅ Document learning → Prevent future recurrence
+
+### 2. Warning/Error Investigation Culture ✅
+
+**Core Principle**: 全ての警告・エラーに興味を持って調査する
+
+**Implementation**:
+- Zero tolerance for dismissal
+- Mandatory investigation protocol (context7 + WebFetch)
+- Impact categorization (Critical/Important/Informational)
+- Documentation requirement for all decisions
+
+**Quality Mindset**:
+- Warnings = Future technical debt
+- "Works now" ≠ "Production ready"
+- Thorough investigation = Higher code quality
+- Every warning is a learning opportunity
+
+### 3. Memory Key Schema (Standardized) ✅
+
+**Pattern**: `[category]/[subcategory]/[identifier]`
+
+**Inspiration**: Kubernetes namespaces, Git refs, Prometheus metrics
+
+**Categories Defined**:
+- `session/`: Session lifecycle management
+- `plan/`: Planning phase (hypothesis, architecture, rationale)
+- `execution/`: Do phase (experiments, errors, solutions)
+- `evaluation/`: Check phase (analysis, metrics, lessons)
+- `learning/`: Knowledge capture (patterns, solutions, mistakes)
+- `project/`: Project understanding (context, architecture, conventions)
+
+**Benefits**:
+- Consistent naming across all memory operations
+- Easy to query and retrieve related memories
+- Clear organization for knowledge management
+- Inspired by proven OSS practices
+
+### 4. PDCA Document Structure (Normalized) ✅
+
+**Location**: `docs/pdca/[feature-name]/`
+
+**Structure** (明確・わかりやすい):
+```
+docs/pdca/[feature-name]/
+  ├── plan.md    # Plan: 仮説・設計
+  ├── do.md      # Do: 実験・試行錯誤  
+  ├── check.md   # Check: 評価・分析
+  └── act.md     # Act: 改善・次アクション
+```
+
+**Templates Provided**:
+- plan.md: Hypothesis, Expected Outcomes, Risks
+- do.md: Implementation log (時系列), Learnings
+- check.md: Results vs Expectations, What worked/failed
+- act.md: Success patterns, Global rule updates, Checklist updates
+
+**Lifecycle**:
+1. Start → Create plan.md
+2. Work → Update do.md continuously
+3. Complete → Create check.md
+4. Success → Formalize to docs/patterns/ + create act.md
+5. Failure → Move to docs/mistakes/ + create act.md with prevention
+
+## User Feedback Integration
+
+### Key Insights from User:
+1. **同じ方法を繰り返すからループする** → Root cause analysis mandatory
+2. **警告を興味を持って調べる癖** → Zero tolerance culture implemented
+3. **スキーマ未定義なら定義すべき** → Kubernetes-inspired schema added
+4. **plan/do/check/actでわかりやすい** → PDCA structure normalized
+5. **OSS参考にアイデアをパクる** → Kubernetes, Git, Prometheus patterns adopted
+
+### Philosophy Embedded:
+- "間違いを理解してから再試行" (Understand before retry)
+- "警告 = 将来の技術的負債" (Warnings = Future debt)
+- "コード品質向上 = 徹底調査文化" (Quality = Investigation culture)
+- "アイデアに著作権なし" (Ideas are free to adopt)
+
+## Expected Impact
+
+### Code Quality:
+- ✅ Fewer repeated errors (root cause analysis)
+- ✅ Proactive technical debt prevention (warning investigation)
+- ✅ Higher test coverage and security compliance
+- ✅ Consistent documentation and knowledge capture
+
+### Developer Experience:
+- ✅ Clear PDCA structure (plan/do/check/act)
+- ✅ Standardized memory keys (easy to use)
+- ✅ Learning captured systematically
+- ✅ Patterns reusable across projects
+
+### Long-term Benefits:
+- ✅ Continuous improvement culture
+- ✅ Knowledge accumulation over sessions
+- ✅ Reduced time on repeated mistakes
+- ✅ Higher quality autonomous execution
+
+## Next Steps
+
+1. **Test in Real Usage**: Apply PM Agent to actual feature implementation
+2. **Validate Improvements**: Measure error recovery cycles, warning handling
+3. **Iterate Based on Results**: Refine based on real-world performance
+4. **Document Success Cases**: Build example library of PDCA cycles
+5. **Upstream Contribution**: After validation, contribute to SuperClaude
+
+## Files Modified
+
+- `superclaude/commands/pm.md`: 
+  - Added "Self-Correcting Execution (Root Cause First)" section
+  - Added "Warning/Error Investigation Culture" section
+  - Added "Memory Key Schema (Standardized)" section
+  - Added "PDCA Document Structure (Normalized)" section
+  - ~260 lines of detailed implementation guidance
+
+## Implementation Quality
+
+- ✅ User feedback directly incorporated
+- ✅ Real-world practices from Kubernetes, Git, Prometheus
+- ✅ Clear anti-patterns and correct patterns defined
+- ✅ Concrete examples and templates provided
+- ✅ Japanese and English mixed (user preference respected)
+- ✅ Philosophical principles embedded in implementation
+
+This improvement represents a fundamental shift from "retry on error" to "understand then solve" approach, which should dramatically improve PM Agent's code quality and learning capabilities.