docs: 更新所有命令描述并重新生成索引文件

- 更新所有69个命令文件的description字段，基于实际功能重新生成详细描述
- 重新生成5个索引文件（all-commands, by-category, by-use-case, essential-commands, command-relationships）
- 移动analyze_commands.py到scripts/目录并完善功能
- 移除临时备份文件

命令描述改进示例：
- workflow:plan: 增加了工具和代理的详细说明（Gemini, action-planning-agent）
- cli:execute: 说明了YOLO权限和多种执行模式
- memory:update-related: 详细说明了批处理策略和工具回退链

索引文件改进：
- usage_scenario从2种扩展到10种（更精细分类）
- command-relationships覆盖所有69个命令
- 区分built-in（内置调用）和sequential（用户顺序执行）关系

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

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

.claude/commands/task/breakdown.md

@@ -1,6 +1,6 @@
 ---
 name: breakdown
-description: Intelligent task decomposition with context-aware subtask generation
+description: Decompose complex task into subtasks with dependency mapping, creates child task JSONs with parent references and execution order
 argument-hint: "task-id"
 ---
 

.claude/commands/task/create.md

@@ -1,6 +1,6 @@
 ---
 name: create
-description: Create implementation tasks with automatic context awareness
+description: Generate task JSON from natural language description with automatic file pattern detection, scope inference, and dependency analysis
 argument-hint: "\"task title\""
 ---
 

.claude/commands/task/execute.md

@@ -1,6 +1,6 @@
 ---
 name: execute
-description: Execute tasks with appropriate agents and context-aware orchestration
+description: Execute task JSON using appropriate agent (@doc-generator/@implementation-agent/@test-agent) with pre-analysis context loading and status tracking
 argument-hint: "task-id"
 ---
 

.claude/commands/task/replan.md

@@ -1,6 +1,6 @@
 ---
 name: replan
-description: Replan individual tasks with detailed user input and change tracking
+description: Update task JSON with new requirements or batch-update multiple tasks from verification report, tracks changes in task-changes.json
 argument-hint: "task-id [\"text\"|file.md] | --batch [verification-report.md]"
 allowed-tools: Read(*), Write(*), Edit(*), TodoWrite(*), Glob(*), Bash(*)
 ---