diff --git a/.github/workflows/opencode-review.yml b/.github/workflows/opencode-review.yml
index 5fbd3bb..bdbb023 100644
--- a/.github/workflows/opencode-review.yml
+++ b/.github/workflows/opencode-review.yml
@@ -487,6 +487,11 @@ jobs:
           <opencode-evidence>
           $(sed -n '1,900p' "$OPENCODE_EVIDENCE_FILE")
           </opencode-evidence>
+          Use CodeGraph for blast-radius, call graph, and test-coverage questions before broad local reads.
+          Prefer deletion, stdlib/native platform features, and already-installed dependencies before proposing new code or packages, but do not simplify away trust-boundary validation, data-loss handling, security, accessibility, or required tests.
+          For Korean prose, preserve facts, identifiers, numbers, and quotes while removing only formulaic filler or translationese.
+          When Strix evidence supports it, name the concrete CWE/KISA-style class such as injection, auth/authz, secrets, crypto, path traversal/file upload, XSS/CSRF/SSRF, error disclosure, or debug/deployment config; do not invent a category without evidence.
+          Before APPROVE, the summary must include at least one exact changed file path inspected as changed-file evidence. Never approve with a reason or summary that says no changes, no files, or no actionable changes were found when bounded evidence lists changed files; that control block is invalid.
           First line exactly:
           <!-- opencode-review-gate head_sha=${HEAD_SHA} run_id=${RUN_ID} run_attempt=${RUN_ATTEMPT} -->
           Then exactly one control block:
@@ -576,6 +581,11 @@ jobs:
           <opencode-evidence>
           $(sed -n '1,900p' "$OPENCODE_EVIDENCE_FILE")
           </opencode-evidence>
+          Use CodeGraph for blast-radius, call graph, and test-coverage questions before broad local reads.
+          Prefer deletion, stdlib/native platform features, and already-installed dependencies before proposing new code or packages, but do not simplify away trust-boundary validation, data-loss handling, security, accessibility, or required tests.
+          For Korean prose, preserve facts, identifiers, numbers, and quotes while removing only formulaic filler or translationese.
+          When Strix evidence supports it, name the concrete CWE/KISA-style class such as injection, auth/authz, secrets, crypto, path traversal/file upload, XSS/CSRF/SSRF, error disclosure, or debug/deployment config; do not invent a category without evidence.
+          Before APPROVE, the summary must include at least one exact changed file path inspected as changed-file evidence. Never approve with a reason or summary that says no changes, no files, or no actionable changes were found when bounded evidence lists changed files; that control block is invalid.
           First line exactly:
           <!-- opencode-review-gate head_sha=${HEAD_SHA} run_id=${RUN_ID} run_attempt=${RUN_ATTEMPT} -->
           Then exactly one control block:
@@ -665,6 +675,11 @@ jobs:
           <opencode-evidence>
           $(sed -n '1,900p' "$OPENCODE_EVIDENCE_FILE")
           </opencode-evidence>
+          Use CodeGraph for blast-radius, call graph, and test-coverage questions before broad local reads.
+          Prefer deletion, stdlib/native platform features, and already-installed dependencies before proposing new code or packages, but do not simplify away trust-boundary validation, data-loss handling, security, accessibility, or required tests.
+          For Korean prose, preserve facts, identifiers, numbers, and quotes while removing only formulaic filler or translationese.
+          When Strix evidence supports it, name the concrete CWE/KISA-style class such as injection, auth/authz, secrets, crypto, path traversal/file upload, XSS/CSRF/SSRF, error disclosure, or debug/deployment config; do not invent a category without evidence.
+          Before APPROVE, the summary must include at least one exact changed file path inspected as changed-file evidence. Never approve with a reason or summary that says no changes, no files, or no actionable changes were found when bounded evidence lists changed files; that control block is invalid.
           First line exactly:
           <!-- opencode-review-gate head_sha=${HEAD_SHA} run_id=${RUN_ID} run_attempt=${RUN_ATTEMPT} -->
           Then exactly one control block:
diff --git a/scripts/ci/opencode_review_normalize_output.py b/scripts/ci/opencode_review_normalize_output.py
index 2a850c6..32145f8 100755
--- a/scripts/ci/opencode_review_normalize_output.py
+++ b/scripts/ci/opencode_review_normalize_output.py
@@ -4,11 +4,122 @@
 from __future__ import annotations
 
 import json
+import re
 import sys
 from pathlib import Path
 from typing import Any
 
 
+STRUCTURAL_FAILURE_PHRASES = (
+    "structural exploration was not possible",
+    "structural exploration not possible",
+    "structural exploration is not required",
+    "structural exploration not required",
+    "structural analysis is not required",
+    "structural analysis not required",
+    "structural review is not required",
+    "structural review not required",
+    "no structural exploration required",
+    "no structural analysis required",
+    "no structural review required",
+    "structural exploration is unnecessary",
+    "structural analysis is unnecessary",
+    "structural review is unnecessary",
+    "changed files could not be inspected",
+    "source files could not be inspected",
+    "required files could not be inspected",
+    "could not access changed files",
+    "could not access the changed files",
+    "could not access source files",
+    "could not access the source files",
+    "could not access required files",
+    "could not access required evidence",
+    "evidence was truncated",
+    "truncated evidence",
+    "no changes detected",
+    "no changes were detected",
+    "no changes found",
+    "no changes were found",
+    "no files or changes were found",
+    "no files or changes found",
+    "no actionable changes to review",
+    "no changes to review",
+    "no changed files",
+)
+
+STRUCTURAL_FAILURE_PATTERNS = (
+    re.compile(
+        r"\b(?:could not|cannot|can't|unable to)\s+"
+        r"(?:inspect|access|review)\s+(?:the\s+)?"
+        r"(?:changed|source|required)\s+files?\b"
+    ),
+    re.compile(
+        r"\b(?:changed|source|required)\s+files?\s+"
+        r"(?:could not|cannot|can't|were not|was not)\s+"
+        r"(?:be\s+)?(?:inspected|accessed|reviewed)\b"
+    ),
+    re.compile(
+        r"\b(?:structural\s+(?:exploration|analysis|review))\s+"
+        r"(?:was\s+)?(?:unavailable|incomplete|blocked|not possible)\b"
+    ),
+    re.compile(
+        r"\bno\s+(?:files?\s+or\s+)?changes?\s+"
+        r"(?:were\s+)?(?:detected|found|present)\b"
+    ),
+    re.compile(r"\bno\s+(?:actionable\s+)?changes?\s+to\s+review\b"),
+    re.compile(r"\b(?:no|zero)\s+changed\s+files?\b"),
+)
+
+CHANGED_FILE_EVIDENCE_PATTERN = re.compile(
+    r"(?<![A-Za-z0-9_])(?:[A-Za-z0-9_.-]+/)+[A-Za-z0-9_.@+-]+"
+    r"|(?<![A-Za-z0-9_])[A-Za-z0-9_.-]+\."
+    r"(?:py|js|jsx|ts|tsx|mjs|cjs|sh|bash|yml|yaml|json|jsonc|toml|lock|md|txt|css|scss|html|sql|go|rs|java|kt|swift|rb|php|cs|xml|ini|cfg)"
+    r"(?![A-Za-z0-9_])"
+    r"|(?<![A-Za-z0-9_])(?:Dockerfile|Makefile|README|LICENSE|AGENTS\.md)(?![A-Za-z0-9_])"
+)
+
+
+def admits_missing_structural_review(reason: str, summary: str) -> bool:
+    """Return whether an approval admits it did not inspect required structure."""
+    combined = f"{reason}\n{summary}".casefold()
+    return any(phrase in combined for phrase in STRUCTURAL_FAILURE_PHRASES) or any(
+        pattern.search(combined) for pattern in STRUCTURAL_FAILURE_PATTERNS
+    )
+
+
+def mentions_changed_file_evidence(reason: str, summary: str) -> bool:
+    """Return whether an approval names at least one concrete changed file/path."""
+    return bool(CHANGED_FILE_EVIDENCE_PATTERN.search(f"{reason}\n{summary}"))
+
+
+def check_structural_approval(control_file: Path) -> int:
+    """Validate an already-normalized control block before publishing approval."""
+    try:
+        value = json.loads(control_file.read_text(encoding="utf-8"))
+    except (OSError, json.JSONDecodeError) as exc:
+        print(f"cannot read OpenCode control JSON: {exc}", file=sys.stderr)
+        return 65
+
+    if not isinstance(value, dict):
+        print("NO_CONCLUSION", file=sys.stderr)
+        return 4
+
+    if value.get("result") == "APPROVE" and admits_missing_structural_review(
+        str(value.get("reason", "")),
+        str(value.get("summary", "")),
+    ):
+        print("NO_CONCLUSION", file=sys.stderr)
+        return 4
+    if value.get("result") == "APPROVE" and not mentions_changed_file_evidence(
+        str(value.get("reason", "")),
+        str(value.get("summary", "")),
+    ):
+        print("NO_CONCLUSION", file=sys.stderr)
+        return 4
+
+    return 0
+
+
 def valid_control(
     value: Any,
     *,
@@ -16,6 +127,7 @@ def valid_control(
     expected_run_id: str,
     expected_run_attempt: str,
 ) -> dict[str, Any] | None:
+    """Return a normalized control block when it matches the current run."""
     if not isinstance(value, dict):
         return None
 
@@ -34,14 +146,22 @@ def valid_control(
         return None
     if not isinstance(value.get("summary"), str) or not value["summary"].strip():
         return None
+    reason = value["reason"].strip()
+    summary = value["summary"].strip()
 
     findings = value.get("findings")
+    if findings is None and result == "APPROVE":
+        findings = []
     if not isinstance(findings, list):
         return None
     if result == "APPROVE" and findings:
         return None
     if result == "REQUEST_CHANGES" and not findings:
         return None
+    if result == "APPROVE" and admits_missing_structural_review(reason, summary):
+        return None
+    if result == "APPROVE" and not mentions_changed_file_evidence(reason, summary):
+        return None
 
     required_finding_fields = (
         "path",
@@ -56,7 +176,8 @@ def valid_control(
     for finding in findings:
         if not isinstance(finding, dict):
             return None
-        if not isinstance(finding.get("line"), int) or finding["line"] <= 0:
+        line = finding.get("line")
+        if isinstance(line, bool) or not isinstance(line, int) or line <= 0:
             return None
         for field in required_finding_fields:
             if not isinstance(finding.get(field), str) or not finding[field].strip():
@@ -67,13 +188,14 @@ def valid_control(
         "run_id": value["run_id"],
         "run_attempt": value["run_attempt"],
         "result": result,
-        "reason": value["reason"],
-        "summary": value["summary"],
+        "reason": reason,
+        "summary": summary,
         "findings": findings,
     }
 
 
 def iter_json_objects(text: str) -> list[Any]:
+    """Extract JSON objects from raw OpenCode output that may include prose."""
     decoder = json.JSONDecoder()
     values: list[Any] = []
 
@@ -96,10 +218,15 @@ def iter_json_objects(text: str) -> list[Any]:
 
 
 def main(argv: list[str]) -> int:
+    """Run the normalizer CLI and write the publishable control block."""
+    if len(argv) == 3 and argv[1] == "--check-structural-approval":
+        return check_structural_approval(Path(argv[2]))
+
     if len(argv) != 5:
         print(
             "usage: opencode_review_normalize_output.py "
-            "<expected_head_sha> <expected_run_id> <expected_run_attempt> <output_file>",
+            "<expected_head_sha> <expected_run_id> <expected_run_attempt> <output_file>\n"
+            "   or: opencode_review_normalize_output.py --check-structural-approval <control_json_file>",
             file=sys.stderr,
         )
         return 64