feat: Update command validation tools and improve README documentation

.claude/skills/ccw-coordinator/README.md

@@ -40,6 +40,6 @@
 | phases/orchestrator.md | 编排逻辑 |
 | phases/state-schema.md | 状态定义 |
 | phases/actions/*.md | 动作实现 |
-| specs/chain-registry.json | 命令元数据 |
-| specs/chain-validation-rules.md | 验证规则 |
-| tools/chain-validate.js | 验证工具 |
+| specs/specs.md | 命令库、验证规则、注册表 |
+| tools/chain-validate.cjs | 验证工具 |
+| tools/command-registry.cjs | 命令注册表工具 |

.claude/skills/ccw-coordinator/SKILL.md

@@ -224,10 +224,9 @@ Bash(`mkdir -p "${workDir}/logs"`);
 | [phases/actions/action-command-execute.md](phases/actions/action-command-execute.md) | 命令执行动作 |
 | [phases/actions/action-complete.md](phases/actions/action-complete.md) | 完成动作 |
 | [phases/actions/action-abort.md](phases/actions/action-abort.md) | 中止动作 |
-| [specs/command-library.md](specs/command-library.md) | 命令库 |
-| [specs/chain-registry.json](specs/chain-registry.json) | 命令元数据 |
-| [specs/chain-validation-rules.md](specs/chain-validation-rules.md) | 验证规则 |
-| [tools/chain-validate.js](tools/chain-validate.js) | 验证工具 |
+| [specs/specs.md](specs/specs.md) | 命令库、验证规则、注册表 |
+| [tools/chain-validate.cjs](tools/chain-validate.cjs) | 验证工具 |
+| [tools/command-registry.cjs](tools/command-registry.cjs) | 命令注册表工具 |
 
 ---
 

.claude/skills/ccw-coordinator/phases/actions/action-init.md

@@ -12,6 +12,7 @@ const state = {
   session_id: `coord-${timestamp}`,
   status: 'running',
   started_at: new Date().toISOString(),
+  task_description: '',
   command_chain: [],
   current_command_index: 0,
   execution_results: [],

.claude/skills/ccw-coordinator/specs/specs.md

@@ -276,14 +276,14 @@ tdd-plan → lite-execute
 
 ## 验证工具
 
-### chain-validate.js
+### chain-validate.cjs
 
-位置: `tools/chain-validate.js`
+位置: `tools/chain-validate.cjs`
 
 验证命令链合法性：
 
 ```bash
-node tools/chain-validate.js plan execute test-cycle-execute
+node tools/chain-validate.cjs plan execute test-cycle-execute
 ```
 
 输出:

.claude/skills/ccw-coordinator/tools/chain-validate.cjs

@@ -14,9 +14,16 @@
 const fs = require('fs');
 const path = require('path');
 
-// Load registry
-const registryPath = path.join(__dirname, '..', 'specs', 'chain-registry.json');
-const registry = JSON.parse(fs.readFileSync(registryPath, 'utf8'));
+// Optional registry loading - gracefully degrade if not found
+let registry = null;
+try {
+  const registryPath = path.join(__dirname, '..', 'specs', 'chain-registry.json');
+  if (fs.existsSync(registryPath)) {
+    registry = JSON.parse(fs.readFileSync(registryPath, 'utf8'));
+  }
+} catch (error) {
+  // Registry not available - dependency validation will be skipped
+}
 
 class ChainValidator {
   constructor(registry) {
@@ -161,10 +168,15 @@ class ChainValidator {
   }
 
   validateDependencies(chain) {
+    // Skip if registry not available
+    if (!this.registry || !this.registry.commands) {
+      return;
+    }
+
     for (let i = 0; i < chain.length; i++) {
       const cmd = chain[i];
       const cmdMeta = this.registry.commands[cmd];
-      
+
       if (!cmdMeta) continue;
 
       const deps = cmdMeta.dependencies || [];
@@ -208,6 +220,11 @@ class ChainValidator {
   }
 
   validateCommandExistence(chain) {
+    // Skip if registry not available
+    if (!this.registry || !this.registry.commands) {
+      return;
+    }
+
     for (const cmd of chain) {
       if (!this.registry.commands[cmd]) {
         this.errors.push({