Add submission safety gate to reports

src/space_service.py

@@ -477,6 +477,13 @@ def _build_report(result: RefCheckResult, reports: list[EntryReport]) -> str:
         "",
     ]
 
+    gate_status, gate_reasons = _submission_safety_gate(result)
+    lines.extend(["### Submission Safety Gate", ""])
+    lines.append(f"- Status: **{gate_status}**")
+    for reason in gate_reasons:
+        lines.append(f"- {reason}")
+    lines.append("")
+
     if result.removed_details:
         lines.extend(["### Removed", ""])
         for key, title, reason in result.removed_details:
@@ -530,3 +537,26 @@ def _build_report(result: RefCheckResult, reports: list[EntryReport]) -> str:
         lines.append("")
 
     return "\n".join(lines).strip() + "\n"
+
+
+def _submission_safety_gate(result: RefCheckResult) -> tuple[str, list[str]]:
+    reasons = []
+    if result.review_details:
+        reasons.append(f"FAIL: {len(result.review_details)} reference(s) still need manual review.")
+    if result.issues:
+        reasons.append(f"FAIL: {result.issues} reference(s) still have strict verification issues.")
+    if result.not_found:
+        reasons.append(f"FAIL: {result.not_found} reference(s) could not be found in configured sources.")
+    if result.removed_details:
+        reasons.append(
+            f"FAIL: {len(result.removed_details)} reference(s) were removed; confirm the paper text no longer cites them."
+        )
+    if result.total_output and result.verified != result.total_output:
+        reasons.append(f"FAIL: only {result.verified}/{result.total_output} output reference(s) are strictly verified.")
+    if result.duplicate_details:
+        reasons.append(f"WARN: {len(result.duplicate_details)} duplicate title group(s) should be checked.")
+
+    failures = [reason for reason in reasons if reason.startswith("FAIL")]
+    if failures:
+        return "FAIL - do not submit yet", reasons
+    return "PASS - all output references are strictly verified", reasons or ["PASS: no unresolved reference risks detected."]