secret-guard: no live credentials in bridged repos (hash-only findings)

New guard windy-git/secret-guard (warn-only) over EVERY text file: Telegram,
GitHub, AWS, Slack, Anthropic, OpenAI, Stripe live, Google API keys and
private-key blocks (scripts/secret_shapes.py, shared with the weekly public
scan). A finding carries "<kind> #<sha256[:8]>", never the value (house rule
10). Known fakes allowed BY HASH (ci/secret-guard-allow.yml). GUARDS_STATUS
gets a secrets column. Leak hunt 09-24: @Windy_0_bot token in a public fixture.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

api/tests/test_guards_report.py

@@ -57,7 +57,7 @@ def test_render_splits_lane_and_grant_counts():
     md = gr.render(res)
     assert "| ci-hygiene (house rule 6) | 1 | 1 | ❌ not yet |" in md
     assert "| compute-guard (Mind is the only door) | 0 | 0 | ✅ YES |" in md
-    assert "| windy-git | Windy Git | bbbbbbb | 0 | 0 | clean ✅ |" in md
+    assert "| windy-git | Windy Git | bbbbbbb | 0 | 0 | 0 | clean ✅ |" in md
     assert "| windy-pro | Windy Hub | aaaaaaa |" in md  # owner = session to message
     assert "(job reality-check)" in md