Fix zero-fixture false-pass gate

README.md

@@ -32,7 +32,7 @@
 This is the main TaijiOS repository.
 
 - Reviewer start page: [docs/START_HERE_FOR_REVIEWERS.md](docs/START_HERE_FOR_REVIEWERS.md) — 5-minute public review path, exact verdicts, and no-overclaim boundaries.
-- Agent Reliability False-Pass Gate: `python scripts/check_false_pass_gate.py --self-test examples/false_pass_gate/fixtures` — local proof that unsupported "done" claims and missing `cannot_claim` boundaries are blocked before success language is accepted.
+- Agent Reliability False-Pass Gate: `python scripts/check_false_pass_gate.py --self-test examples/false_pass_gate/fixtures` — local schema-level check that blocks success language when passing evidence pointers or explicit `cannot_claim` boundaries are missing.
 - SpaceXAI proof packet: [docs/SPACE_X_AI_PROOF_PACKET.md](docs/SPACE_X_AI_PROOF_PACKET.md) — human-review evidence for an evidence-first AI agent runtime; not SpaceX endorsement, not production readiness, and not real hardware control.
 - 权威边界文档: [Product Spine](docs/architecture/PRODUCT_SPINE_AUTHORITY.md), [Provider Gate](docs/provider/PROVIDER_BOUNDARY_GATE.md), [Direct LLM Caller](docs/provider/DIRECT_LLM_CALLER_BOUNDARY.md), [Multi-Model Gate](docs/provider/MULTI_MODEL_ARCHITECTURE_GATE.md), [Runtime Matrix](docs/runtime/RUNTIME_MATURITY_MATRIX.md), [HSDL](docs/design/HSDL_CANONICAL_SPEC_v0.1.md), [小九通天录](xiaojiu_tongtianlu/BOUNDARY.md), [Life Systems](life_systems/BIOSECURITY_BOUNDARY.md) — docs-only review gates; not repo-level PASS, runtime readiness, or provider readiness.
 - Machine-readable proof index: [docs/proof_index.json](docs/proof_index.json)

docs/START_HERE_FOR_REVIEWERS.md

@@ -45,8 +45,9 @@ Then inspect:
 
 ## Agent Reliability: False-Pass Gate
 
-The False-Pass Gate checks whether an AI-agent success claim has passing evidence
-and explicit `cannot_claim` boundaries. It is intentionally local and synthetic:
+The False-Pass Gate is a schema-level check for AI-agent success claims. It
+requires passing evidence pointers and explicit `cannot_claim` boundaries before
+success language is accepted. It is intentionally local and synthetic:
 
 ```bash
 python scripts/check_false_pass_gate.py --self-test examples/false_pass_gate/fixtures
@@ -59,8 +60,9 @@ self_test=PASS cases=3
 ```
 
 This gate can support `LOCAL_VALIDATED` after the self-test and pytest pass. It
-does not prove remote CI, public adoption, production readiness, provider/API
-readiness, or recruiting validation.
+does not execute evidence commands, prove that the success claim is true, prove
+remote CI, public adoption, production readiness, provider/API readiness, or
+recruiting validation.
 
 ## Verdict Semantics
 

docs/proof_index.json

@@ -39,11 +39,11 @@
       "limitation": "The 100-run and 1,000-run batches are plans until executed and recorded."
     },
     {
-      "claim": "The Agent Reliability False-Pass Gate blocks unsupported AI-agent done/readiness claims and missing cannot_claim boundaries.",
+      "claim": "The Agent Reliability False-Pass Gate blocks AI-agent success language when passing evidence pointers or explicit cannot_claim boundaries are missing.",
       "evidence_file": "scripts/check_false_pass_gate.py and examples/false_pass_gate/fixtures/",
       "command": "python scripts/check_false_pass_gate.py --self-test examples/false_pass_gate/fixtures",
       "verdict": "LOCAL_VALIDATED when self-test and pytest pass",
-      "limitation": "Synthetic local fixtures only; this does not prove remote CI, public proof update, production readiness, provider/API readiness, recruiting validation, or canonical truth."
+      "limitation": "Synthetic local fixtures only; this does not execute evidence commands, prove that the success claim is true, prove remote CI, public proof update, production readiness, provider/API readiness, recruiting validation, or canonical truth."
     }
   ],
   "blocked_claims": [

scripts/check_false_pass_gate.py

@@ -93,7 +93,21 @@ def run_case(path: Path) -> int:
 
 
 def run_self_test(fixtures_dir: Path) -> int:
+    if not fixtures_dir.is_dir():
+        print(
+            f"self_test=FAIL cases=0 "
+            f"reason=fixtures_dir_not_found path={fixtures_dir}"
+        )
+        return 1
+
     paths = sorted(fixtures_dir.glob("*.json"))
+    if not paths:
+        print(
+            f"self_test=FAIL cases=0 "
+            f"reason=no_fixtures path={fixtures_dir}"
+        )
+        return 1
+
     failures: list[str] = []
 
     for path in paths:

tests/test_false_pass_gate.py

@@ -27,6 +27,29 @@ def test_self_test_fixture_suite_passes():
     assert "cases=3" in result.stdout
 
 
+def test_self_test_rejects_empty_fixture_directory(tmp_path):
+    empty_fixtures = tmp_path / "fixtures"
+    empty_fixtures.mkdir()
+
+    result = run_gate("--self-test", str(empty_fixtures))
+
+    assert result.returncode == 1
+    assert "self_test=FAIL" in result.stdout
+    assert "cases=0" in result.stdout
+    assert "reason=no_fixtures" in result.stdout
+
+
+def test_self_test_rejects_missing_fixture_directory(tmp_path):
+    missing_fixtures = tmp_path / "missing"
+
+    result = run_gate("--self-test", str(missing_fixtures))
+
+    assert result.returncode == 1
+    assert "self_test=FAIL" in result.stdout
+    assert "cases=0" in result.stdout
+    assert "reason=fixtures_dir_not_found" in result.stdout
+
+
 def test_unsupported_done_claim_is_blocked():
     result = run_gate("--case", str(FIXTURES / "fail_unsupported_done.json"))