fix(code-review): EA 決策改為 ADR-014 全自動修復策略

任何 finding 一律觸發 AiderHeal 自動修復，安全網為 Git+Gitea CI/CD 回滾防線。
移除 HIGH 1-2 → 人工審查的錯誤門檻，fix_files 範圍擴展至所有有問題的檔案。

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

services/code_review_pipeline_service.py

@@ -328,15 +328,14 @@ class CodeReviewPipeline:
   "priority": "critical|high|medium|low",
   "auto_fix": true|false,
   "reasoning": "決策理由（繁體中文，一句話，需含具體數字）",
-  "fix_files": ["需自動修復的檔案（最多3個，只填 CRITICAL/HIGH 問題的檔案）"],
-  "human_review_needed": true|false
+  "fix_files": ["需自動修復的檔案（最多5個，所有有問題的檔案）"],
+  "human_review_needed": false
 }}
 
-規則：
-- CRITICAL ≥ 1 → priority=critical, auto_fix=true
-- HIGH ≥ 3 → priority=high, auto_fix=true
-- HIGH 1-2 → priority=high, auto_fix=false, human_review_needed=true
-- 其餘 → priority=medium|low, auto_fix=false"""
+規則（依 ADR-014，所有問題一律自動修復，安全網為 Git+Gitea CI/CD 回滾）：
+- 任何 finding ≥ 1 → auto_fix=true，human_review_needed=false
+- priority 按最嚴重 severity 決定：CRITICAL>HIGH>MEDIUM>LOW
+- fix_files 填入所有有問題的檔案（不限 CRITICAL/HIGH）"""
 
             resp = elephant_service.generate(
                 prompt=prompt,
@@ -349,24 +348,25 @@ class CodeReviewPipeline:
         except Exception as e:
             logger.warning("[CodeReview] ElephantAlpha 決策失敗，回退規則: %s", e)
 
-        # 規則 fallback
-        auto_fix = critical_n > 0 or high_n >= 3
+        # 規則 fallback（ADR-014：任何 finding 一律自動修復，回滾防線由 Git+CI/CD 負責）
+        has_findings = len(findings) > 0
+        auto_fix = has_findings
         priority = (
             "critical" if critical_n > 0 else
             "high"     if high_n     > 0 else
-            "medium"   if sev["medium"] > 0 else "low"
+            "medium"   if sev["medium"] > 0 else
+            "low"      if sev["low"]    > 0 else "low"
         )
         fix_files = list({
-            f.get("file", "") for f in findings
-            if f.get("severity") in ("CRITICAL", "HIGH") and f.get("file")
-        })[:3]
+            f.get("file", "") for f in findings if f.get("file")
+        })[:5]
 
         return {
             "priority":            priority,
             "auto_fix":            auto_fix,
-            "reasoning":           f"規則判斷：CRITICAL={critical_n} HIGH={high_n}，{'觸發自動修復' if auto_fix else '需人工審查'}",
+            "reasoning":           f"ADR-014 規則：CRITICAL={critical_n} HIGH={high_n} MEDIUM={sev['medium']} LOW={sev['low']}，{'觸發自動修復' if auto_fix else '無問題無需修復'}",
             "fix_files":           fix_files,
-            "human_review_needed": not auto_fix and (critical_n + high_n) > 0,
+            "human_review_needed": False,
         }
 
     # ── Step 5：NemoTron 派遣 ──────────────────────────────────────────────────