feat: add CLI fallback for MCP calls in team commands

- Implemented CLI fallback using `ccw team` for various team command operations in `execute.md`, `plan.md`, `review.md`, `spec-analyst.md`, `spec-coordinate.md`, `spec-discuss.md`, `spec-reviewer.md`, `spec-writer.md`, and `test.md`.
- Updated command generation templates to include CLI fallback examples.
- Enhanced validation checks to ensure CLI fallback sections are present.
- Added quality standards for CLI fallback in team command design.
- Introduced a new `GlobalGraphExpander` class for expanding search results with cross-directory relationships.
- Added tests for `GlobalGraphExpander` to verify functionality and score decay factors.

.claude/skills/team-command-designer/phases/05-validation.md

@@ -42,6 +42,8 @@ const requiredSections = [
   { name: "TaskGet Usage", pattern: /TaskGet/ },
   { name: "TaskUpdate Usage", pattern: /TaskUpdate/ },
   { name: "SendMessage to Coordinator", pattern: /SendMessage.*coordinator/i },
+  { name: "CLI Fallback Section", pattern: /CLI 回退|CLI Fallback/ },
+  { name: "ccw team CLI Example", pattern: /ccw team log/ },
   { name: "Error Handling Table", pattern: /## Error Handling/ },
   { name: "Implementation Section", pattern: /## Implementation/ }
 ]
@@ -110,6 +112,14 @@ const patternChecks = [
       return command.includes('idle') || command.includes('return')
     },
     severity: "medium"
+  },
+  {
+    name: "CLI Fallback Present",
+    check: () => {
+      return (command.includes('CLI 回退') || command.includes('CLI Fallback')) &&
+             command.includes('ccw team log')
+    },
+    severity: "high"
   }
 ]