feat: restore all 30 slash commands with comprehensive documentation

Restored 26 additional commands from commit d4a17fc, bringing total from 5 to 30 commands.

## New Commands Added (26):
- /analyze - Code and architecture analysis
- /brainstorm - Structured brainstorming sessions
- /build - Build and compilation workflows
- /business-panel - Multi-expert business analysis
- /cleanup - Code cleanup and refactoring
- /design - System design and architecture
- /document - Documentation generation
- /estimate - Effort and time estimation
- /explain - Code explanation
- /git - Git operations and workflows
- /help - Command help and usage
- /implement - Implementation workflows
- /improve - Code improvement suggestions
- /index - Project indexing (alias for index-repo)
- /load - Load saved sessions
- /pm - Project management workflows
- /reflect - Reflection and retrospectives
- /save - Save current session
- /select-tool - Tool selection guidance
- /spawn - Spawn parallel tasks
- /spec-panel - Multi-expert specification analysis
- /task - Task management
- /test - Testing workflows
- /troubleshoot - Debugging and troubleshooting
- /workflow - Custom workflow automation

## Documentation Updates:
- Created docs/reference/commands-list.md with categorized command reference
- Updated README.md with expandable 30-command list
- Updated README-zh.md with Chinese translations
- Updated README-ja.md with Japanese translations
- Updated README-kr.md with Korean translations
- Changed statistics: "3 plugins" → "30 commands"
- Added command categories: Planning & Design, Development, Testing & Quality,
  Documentation, Version Control, Project Management, Research & Analysis, Utilities

## Files Changed:
- 60 files changed, 7930 insertions(+), 267 deletions(-)
- Added 26 commands to plugins/superclaude/commands/
- Added 26 commands to src/superclaude/commands/
- Created comprehensive command documentation

Commands restored from: d4a17fc (superclaude/commands/)
Total: 30 commands now available

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

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

plugins/superclaude/commands/spawn.md

@@ -0,0 +1,85 @@
+---
+name: spawn
+description: "Meta-system task orchestration with intelligent breakdown and delegation"
+category: special
+complexity: high
+mcp-servers: []
+personas: []
+---
+
+# /sc:spawn - Meta-System Task Orchestration
+
+## Triggers
+- Complex multi-domain operations requiring intelligent task breakdown
+- Large-scale system operations spanning multiple technical areas
+- Operations requiring parallel coordination and dependency management
+- Meta-level orchestration beyond standard command capabilities
+
+## Usage
+```
+/sc:spawn [complex-task] [--strategy sequential|parallel|adaptive] [--depth normal|deep]
+```
+
+## Behavioral Flow
+1. **Analyze**: Parse complex operation requirements and assess scope across domains
+2. **Decompose**: Break down operation into coordinated subtask hierarchies
+3. **Orchestrate**: Execute tasks using optimal coordination strategy (parallel/sequential)
+4. **Monitor**: Track progress across task hierarchies with dependency management
+5. **Integrate**: Aggregate results and provide comprehensive orchestration summary
+
+Key behaviors:
+- Meta-system task decomposition with Epic → Story → Task → Subtask breakdown
+- Intelligent coordination strategy selection based on operation characteristics
+- Cross-domain operation management with parallel and sequential execution patterns
+- Advanced dependency analysis and resource optimization across task hierarchies
+## MCP Integration
+- **Native Orchestration**: Meta-system command uses native coordination without MCP dependencies
+- **Progressive Integration**: Coordination with systematic execution for progressive enhancement
+- **Framework Integration**: Advanced integration with SuperClaude orchestration layers
+
+## Tool Coordination
+- **TodoWrite**: Hierarchical task breakdown and progress tracking across Epic → Story → Task levels
+- **Read/Grep/Glob**: System analysis and dependency mapping for complex operations
+- **Edit/MultiEdit/Write**: Coordinated file operations with parallel and sequential execution
+- **Bash**: System-level operations coordination with intelligent resource management
+
+## Key Patterns
+- **Hierarchical Breakdown**: Epic-level operations → Story coordination → Task execution → Subtask granularity
+- **Strategy Selection**: Sequential (dependency-ordered) → Parallel (independent) → Adaptive (dynamic)
+- **Meta-System Coordination**: Cross-domain operations → resource optimization → result integration
+- **Progressive Enhancement**: Systematic execution → quality gates → comprehensive validation
+
+## Examples
+
+### Complex Feature Implementation
+```
+/sc:spawn "implement user authentication system"
+# Breakdown: Database design → Backend API → Frontend UI → Testing
+# Coordinates across multiple domains with dependency management
+```
+
+### Large-Scale System Operation
+```
+/sc:spawn "migrate legacy monolith to microservices" --strategy adaptive --depth deep
+# Enterprise-scale operation with sophisticated orchestration
+# Adaptive coordination based on operation characteristics
+```
+
+### Cross-Domain Infrastructure
+```
+/sc:spawn "establish CI/CD pipeline with security scanning"
+# System-wide infrastructure operation spanning DevOps, Security, Quality domains
+# Parallel execution of independent components with validation gates
+```
+
+## Boundaries
+
+**Will:**
+- Decompose complex multi-domain operations into coordinated task hierarchies
+- Provide intelligent orchestration with parallel and sequential coordination strategies
+- Execute meta-system operations beyond standard command capabilities
+
+**Will Not:**
+- Replace domain-specific commands for simple operations
+- Override user coordination preferences or execution strategies
+- Execute operations without proper dependency analysis and validation