feat: 优化 Solution ID 命名机制并添加 GitHub 链接显示

- Solution ID 改用 4 位随机 uid (如 SOL-GH-123-a7x9) 避免多次规划时覆盖
- issue 卡片添加 GitHub 链接图标，支持点击跳转到对应 issue

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.claude/agents/issue-plan-agent.md

@@ -212,14 +212,14 @@ Write solution JSON to JSONL file (one line per solution):
 
 **File Format** (JSONL - each line is a complete solution):
 ```
-{"id":"SOL-GH-123-1","description":"...","approach":"...","analysis":{...},"score":0.85,"tasks":[...]}
-{"id":"SOL-GH-123-2","description":"...","approach":"...","analysis":{...},"score":0.75,"tasks":[...]}
+{"id":"SOL-GH-123-a7x9","description":"...","approach":"...","analysis":{...},"score":0.85,"tasks":[...]}
+{"id":"SOL-GH-123-b2k4","description":"...","approach":"...","analysis":{...},"score":0.75,"tasks":[...]}
 ```
 
 **Solution Schema** (must match CLI `Solution` interface):
 ```typescript
 {
-  id: string;                    // Format: SOL-{issue-id}-{N}
+  id: string;                    // Format: SOL-{issue-id}-{uid}
   description?: string;
   approach?: string;
   tasks: SolutionTask[];
@@ -232,9 +232,14 @@ Write solution JSON to JSONL file (one line per solution):
 **Write Operation**:
 ```javascript
 // Append solution to JSONL file (one line per solution)
-const solutionId = `SOL-${issueId}-${seq}`;
+// Use 4-char random uid to avoid collisions across multiple plan runs
+const uid = Math.random().toString(36).slice(2, 6);  // e.g., "a7x9"
+const solutionId = `SOL-${issueId}-${uid}`;
 const solutionLine = JSON.stringify({ id: solutionId, ...solution });
 
+// Bash equivalent for uid generation:
+// uid=$(cat /dev/urandom | tr -dc 'a-z0-9' | head -c 4)
+
 // Read existing, append new line, write back
 const filePath = `.workflow/issues/solutions/${issueId}.jsonl`;
 const existing = existsSync(filePath) ? readFileSync(filePath) : '';
@@ -311,7 +316,7 @@ Each line is a solution JSON containing tasks. Schema: `cat .claude/workflows/cl
 6. Evaluate each solution with `analysis` and `score`
 7. Write solutions to `.workflow/issues/solutions/{issue-id}.jsonl` (append mode)
 8. For HIGH complexity: generate 2-3 candidate solutions
-9. **Solution ID format**: `SOL-{issue-id}-{N}` (e.g., `SOL-GH-123-1`, `SOL-GH-123-2`)
+9. **Solution ID format**: `SOL-{issue-id}-{uid}` where uid is 4 random alphanumeric chars (e.g., `SOL-GH-123-a7x9`)
 10. **GitHub Reply Task**: If issue has `github_url` or `github_number`, add final task to comment on GitHub issue with completion summary
 
 **CONFLICT AVOIDANCE** (for batch processing of similar issues):

.claude/commands/issue/plan.md

@@ -203,7 +203,7 @@ ${issueList}
 7. Single solution → auto-bind; Multiple → return for selection
 
 ### Rules
-- Solution ID format: SOL-{issue-id}-{seq}
+- Solution ID format: SOL-{issue-id}-{uid} (uid: 4 random alphanumeric chars, e.g., a7x9)
 - Single solution per issue → auto-bind via ccw issue bind
 - Multiple solutions → register only, return pending_selection
 - Tasks must have quantified acceptance.criteria

.claude/workflows/cli-templates/schemas/solution-schema.json

@@ -7,9 +7,9 @@
   "properties": {
     "id": {
       "type": "string",
-      "description": "Unique solution identifier: SOL-{issue-id}-{seq}",
-      "pattern": "^SOL-.+-[0-9]+$",
-      "examples": ["SOL-GH-123-1", "SOL-ISS-20251229-1"]
+      "description": "Unique solution identifier: SOL-{issue-id}-{4-char-uid} where uid is 4 alphanumeric chars",
+      "pattern": "^SOL-.+-[a-z0-9]{4}$",
+      "examples": ["SOL-GH-123-a7x9", "SOL-ISS-20251229-001-b2k4"]
     },
     "description": {
       "type": "string",

ccw/src/templates/dashboard-js/views/issue-manager.js

@@ -338,6 +338,14 @@ function renderIssueCard(issue) {
             ${t('issues.boundSolution') || 'Bound'}
           </span>
         ` : ''}
+        ${issue.github_url ? `
+          <a href="${issue.github_url}" target="_blank" rel="noopener noreferrer"
+             class="flex items-center gap-1 text-muted-foreground hover:text-foreground transition-colors"
+             onclick="event.stopPropagation()" title="View on GitHub">
+            <i data-lucide="github" class="w-3.5 h-3.5"></i>
+            ${issue.github_number ? `#${issue.github_number}` : 'GitHub'}
+          </a>
+        ` : ''}
       </div>
     </div>
   `;