enforce: Anthropic ban — linter, pre-commit, tests, and policy doc

Anthropic is not just removed — it is banned. This commit adds
enforcement at every gate to prevent re-introduction.

1. architecture_linter.py — 9 BANNED rules for Anthropic patterns
   (provider, model slugs, API endpoints, keys, model names).
   Scans all yaml/py/sh/json/md. Skips training data and historical docs.

2. pre-commit.py — scan_banned_providers() runs on every staged file.
   Blocks any commit that introduces Anthropic references.
   Exempt: training/, evaluations/, changelogs, historical cost data.

3. test_sovereignty_enforcement.py — TestAnthropicBan class with 4 tests:
   - No Anthropic in wizard configs
   - No Anthropic in playbooks
   - No Anthropic in fallback chain
   - No Anthropic API key in bootstrap

4. BANNED_PROVIDERS.md — Hard policy document. Golden state config.
   Replacement table. Exception list. Not advisory — mandatory.

hermes-sovereign/githooks/pre-commit.py

@@ -272,6 +272,48 @@ def get_file_content_at_staged(filepath: str) -> bytes:
     return result.stdout
 
 
+
+# ---------------------------------------------------------------------------
+# BANNED PROVIDER CHECK — Anthropic is permanently banned
+# ---------------------------------------------------------------------------
+
+_BANNED_PROVIDER_PATTERNS = [
+    (re.compile(r"provider:\s*anthropic", re.IGNORECASE), "Anthropic provider reference"),
+    (re.compile(r"anthropic/claude", re.IGNORECASE), "Anthropic model slug"),
+    (re.compile(r"api\.anthropic\.com"), "Anthropic API endpoint"),
+    (re.compile(r"claude-opus", re.IGNORECASE), "Claude Opus model"),
+    (re.compile(r"claude-sonnet", re.IGNORECASE), "Claude Sonnet model"),
+    (re.compile(r"claude-haiku", re.IGNORECASE), "Claude Haiku model"),
+]
+
+# Files exempt from the ban (training data, historical docs, tests)
+_BAN_EXEMPT = {
+    "training/", "evaluations/", "RELEASE_v", "PERFORMANCE_",
+    "scores.json", "docs/design-log/", "FALSEWORK.md",
+    "test_sovereignty_enforcement.py", "test_metrics_helpers.py",
+    "metrics_helpers.py", "sonnet-workforce.md",
+}
+
+
+def _is_ban_exempt(filepath: str) -> bool:
+    return any(exempt in filepath for exempt in _BAN_EXEMPT)
+
+
+def scan_banned_providers(filepath: str, content: str) -> List[Finding]:
+    """Block any commit that introduces banned provider references."""
+    if _is_ban_exempt(filepath):
+        return []
+    findings = []
+    for line_no, line in enumerate(content.splitlines(), start=1):
+        for pattern, desc in _BANNED_PROVIDER_PATTERNS:
+            if pattern.search(line):
+                findings.append(Finding(
+                    filepath, line_no,
+                    f"🚫 BANNED PROVIDER: {desc}. Anthropic is permanently banned from this system."
+                ))
+    return findings
+
+
 # ---------------------------------------------------------------------------
 # Main
 # ---------------------------------------------------------------------------
@@ -295,11 +337,21 @@ def main() -> int:
             if line.startswith("+") and not line.startswith("+++"):
                 findings.extend(scan_line(line[1:], "<diff>", line_no))
 
+    # Scan for banned providers
+    for filepath in staged_files:
+        file_content = get_file_content_at_staged(filepath)
+        if not is_binary_content(file_content):
+            try:
+                text = file_content.decode("utf-8") if isinstance(file_content, bytes) else file_content
+                findings.extend(scan_banned_providers(filepath, text))
+            except UnicodeDecodeError:
+                pass
+
     if not findings:
-        print(f"{GREEN}✓ No potential secret leaks detected{NC}")
+        print(f"{GREEN}✓ No potential secret leaks or banned providers detected{NC}")
         return 0
 
-    print(f"{RED}✗ Potential secret leaks detected:{NC}\n")
+    print(f"{RED}✗ Violations detected:{NC}\n")
     for finding in findings:
         loc = finding.filename
         print(
@@ -308,7 +360,7 @@ def main() -> int:
 
     print()
     print(f"{RED}╔════════════════════════════════════════════════════════════╗{NC}")
-    print(f"{RED}║  COMMIT BLOCKED: Potential secrets detected!               ║{NC}")
+    print(f"{RED}║  COMMIT BLOCKED: Secrets or banned providers detected!     ║{NC}")
     print(f"{RED}╚════════════════════════════════════════════════════════════╝{NC}")
     print()
     print("Recommendations:")