refactor(issue): rename 'labels' to 'tags' in issue schemas and related code

.claude/workflows/cli-templates/schemas/discovery-finding-schema.json

@@ -118,10 +118,10 @@
                 "maximum": 5,
                 "description": "Priority 1-5 (1=critical, 5=low)"
               },
-              "labels": {
+              "tags": {
                 "type": "array",
                 "items": { "type": "string" },
-                "description": "Suggested labels for the issue"
+                "description": "Suggested tags for the issue"
               }
             },
             "description": "Pre-filled issue suggestion for export"
@@ -205,7 +205,7 @@
             "title": "Add null check in user validation",
             "type": "bug",
             "priority": 2,
-            "labels": ["bug", "auth"]
+            "tags": ["bug", "auth"]
           },
           "external_reference": null,
           "confidence": 0.85,

.claude/workflows/cli-templates/schemas/issues-jsonl-schema.json

@@ -37,10 +37,10 @@
       "type": "string",
       "description": "Original source URL (for GitHub issues)"
     },
-    "labels": {
+    "tags": {
       "type": "array",
       "items": { "type": "string" },
-      "description": "Issue labels/tags"
+      "description": "Issue tags"
     },
     "extended_context": {
       "type": "object",
@@ -120,7 +120,7 @@
       "priority": 1,
       "context": "Connection pool cleanup only happens when MAX_POOL_SIZE is reached...",
       "source": "discovery",
-      "labels": ["bug", "resource-leak", "critical"],
+      "tags": ["bug", "resource-leak", "critical"],
       "extended_context": {
         "location": "storage/sqlite_store.py:59",
         "suggested_fix": "Implement periodic cleanup or weak references",