feat: Add intelligent tool selection strategy and simplify plan.md analysis

- Create intelligent-tools.md as strategic guide for tool selection
- Reference intelligent-tools.md from CLAUDE.md for global access
- Add three analysis levels to plan.md (quick/standard/deep)
- Separate tool selection strategy from plan command implementation
- Maintain clear separation of concerns between strategy and execution

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

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

.claude/workflows/intelligent-tools.md

@@ -0,0 +1,87 @@
+---
+name: intelligent-tools
+description: Strategic tool selection guide - references unified tool documentation
+type: strategic-guideline
+---
+
+# Intelligent Tools Selection Strategy
+
+## Overview
+This document provides strategic guidance for selecting the appropriate analysis tool based on task characteristics and project requirements.
+
+## Tool Documentation References
+- **Gemini CLI**: @~/.claude/workflows/gemini-unified.md
+- **Codex CLI**: @~/.claude/workflows/codex-unified.md
+
+## Tool Characteristics Comparison
+
+### Gemini
+- **Strengths**:
+  - Large context window for analyzing many files simultaneously
+  - Excellent pattern recognition across modules
+  - Superior for architectural and structural analysis
+- **Optimal Use Cases**:
+  - Large codebase analysis (>50 files)
+  - Cross-module pattern detection
+  - Coding convention analysis
+  - Refactoring with broad dependencies
+
+### Codex
+- **Strengths**:
+  - Superior mathematical and algorithmic reasoning
+  - Deeper technical knowledge base
+  - Better for focused, deep analysis
+- **Optimal Use Cases**:
+  - Complex algorithm analysis
+  - Security vulnerability assessment
+  - Performance optimization
+  - Database schema design
+  - API protocol specifications
+
+## Strategic Selection Matrix
+
+| Analysis Need | Recommended Tool | Rationale |
+|--------------|------------------|-----------|
+| Project Architecture | Gemini | Needs broad context across many files |
+| Algorithm Optimization | Codex | Requires deep mathematical reasoning |
+| Security Analysis | Codex | Leverages deeper security knowledge |
+| Code Patterns | Gemini | Pattern recognition across modules |
+| Refactoring | Gemini | Needs understanding of all dependencies |
+| API Design | Codex | Technical specification expertise |
+| Test Coverage | Gemini | Cross-module test understanding |
+| Performance Tuning | Codex | Mathematical optimization capabilities |
+
+## Parallel Analysis Strategy
+
+For complex projects requiring both broad context and deep analysis:
+
+```bash
+# Use Task agents to run both tools in parallel
+Task(subagent_type="general-purpose",
+     prompt="Use Gemini (see @~/.claude/workflows/gemini-unified.md) for architectural analysis")
++
+Task(subagent_type="general-purpose",
+     prompt="Use Codex (see @~/.claude/workflows/codex-unified.md) for algorithmic analysis")
+```
+
+## Implementation Guidelines
+
+1. **Default Selection**: Let project characteristics drive tool choice
+2. **Complexity Thresholds**:
+   - Simple projects (≤50 files): Either tool based on content type
+   - Medium projects (50-200 files): Gemini for overview, Codex for specifics
+   - Large projects (>200 files): Parallel analysis with both tools
+
+3. **Content-Based Selection**:
+   - Mathematical/algorithmic content → Codex
+   - Architectural/structural content → Gemini
+   - Mixed content → Both via Task agents
+
+## Usage in Commands
+
+Commands should reference this strategy guide for tool selection decisions.
+Specific tool usage syntax and examples are documented in their respective unified guides.
+
+**See also**:
+- Gemini detailed usage: @~/.claude/workflows/gemini-unified.md
+- Codex detailed usage: @~/.claude/workflows/codex-unified.md