feat(directives): add 15 engagement-specific directives + tags.toml entries

conductor/directives/audit_script_as_gate/meta.md

@@ -0,0 +1,9 @@
+# audit_script_as_gate
+
+## v1
+
+**Why this iteration:** New rule, no prior source. Encodes the pattern already followed by the 4 existing audit scripts (`audit_weak_types.py`, `audit_exception_handling.py`, `audit_main_thread_imports.py`, `audit_no_models_config_io.py`) so new audit scripts follow the same `--strict` gate convention.
+**Source:** new rule (pattern inferred from existing `scripts/audit_*.py`)
+
+---
+**Lifted:** 2026-07-05

conductor/directives/audit_script_as_gate/v1.md

@@ -0,0 +1,32 @@
+# Audit scripts that classify or summarize must have a `--strict` quality gate that exits 1 on regression
+
+## What it says
+
+Every audit script in `scripts/audit_*.py` that produces classified output (weak types, exception handling, tier2 leaks, etc.) MUST implement a `--strict` mode that exits non-zero when the audit finds violations. The default mode (no `--strict`) is informational — it prints a human-readable report and exits 0. The `--strict` mode is the CI gate.
+
+## Why
+
+An audit without a gate is a suggestion. An audit with a `--strict` gate is a convention enforced before merge. The project's 4 existing audit scripts (`audit_weak_types.py`, `audit_exception_handling.py`, `audit_main_thread_imports.py`, `audit_no_models_config_io.py`) all follow this pattern. New audit scripts MUST follow it too.
+
+## The pattern
+
+```python
+def main() -> int:
+ parser = argparse.ArgumentParser()
+ parser.add_argument("--strict", action="store_true", help="Exit 1 on any violation")
+ parser.add_argument("--json", action="store_true", help="Machine-readable output")
+ args = parser.parse_args()
+ violations = run_audit()
+ if args.json:
+  print(json.dumps(violations))
+ else:
+  print_human_report(violations)
+ if args.strict and violations:
+  return 1
+ return 0
+```
+
+## See also
+
+- `conductor/directives/convention_enforcement_4_mechanisms` — the 4-mechanism enforcement model (styleguide + checklist + audit script + CI gate)
+- `conductor/directives/quality_gate_catches_broken_classifier_before_ship` — the quality gate for classifier scripts