feat: include short description with each critical CVE in summary

summary now lists only CRITICAL vulnerabilities, formatted as
"CVE-ID: description" pairs joined by "; ". Description comes from
trivy's Title field, falling back to the first sentence of Description.

.github/workflows/cve-edge-post.yml

@@ -2,7 +2,10 @@ name: helm-catalog-cve-edge-post
 
 # manifests/helm 카탈로그의 컨테이너 이미지 취약점을 스캔해 단일 JSON 요약으로 출력한다.
 #   [{"image": "...", "low": 0, "high": 0, "medium": 0, "critical": 0,
-#     "scanned_at": "2026-07-13T06:19:44Z", "summary": "CVE-xxxx-xxxxx, ..."}, ...]
+#     "scanned_at": "2026-07-13T06:19:44Z",
+#     "summary": "CVE-xxxx-xxxxx: short description; CVE-yyyy-yyyyy: ..."}, ...]
+# summary 는 CRITICAL 취약점만 대상이며, CVE ID 별로 trivy 가 제공하는 Title(또는
+# Description 첫 문장)을 짧은 설명으로 붙인다.
 # 생성된 JSON 은 POST https://edge.gke.paasup.io/api/v1/cve-scans 로 전송한다.
 # (X-CVE-API-Key 헤더 필요 — Repo Secret CVE_API_KEY, SSL 검증은 --insecure 로 스킵)
 #
@@ -131,14 +134,22 @@ jobs:
                   data = json.load(f)
               image = data.get("ArtifactName", os.path.basename(path))
               counts = {"LOW": 0, "HIGH": 0, "MEDIUM": 0, "CRITICAL": 0}
-              critical_ids = set()
+              critical_desc = {}
               for result in data.get("Results") or []:
                   for vuln in result.get("Vulnerabilities") or []:
                       sev = vuln.get("Severity")
                       if sev in counts:
                           counts[sev] += 1
                           if sev == "CRITICAL":
-                              critical_ids.add(vuln["VulnerabilityID"])
+                              vid = vuln["VulnerabilityID"]
+                              if vid not in critical_desc:
+                                  desc = vuln.get("Title") or (vuln.get("Description") or "").split(". ")[0]
+                                  critical_desc[vid] = desc.strip()
+
+              summary = "; ".join(
+                  f"{vid}: {desc}" if desc else vid
+                  for vid, desc in sorted(critical_desc.items())
+              )
               results.append({
                   "image": image,
                   "low": counts["LOW"],
@@ -146,7 +157,7 @@ jobs:
                   "medium": counts["MEDIUM"],
                   "critical": counts["CRITICAL"],
                   "scanned_at": scanned_at,
-                  "summary": ", ".join(sorted(critical_ids)),
+                  "summary": summary,
               })
 
           with open(out_path, "w") as f: