test: fix 22 stale failures — full suite green (1272 passed)

- conftest: force ECHO_STEERING=off outside test_steering_dispatch; with
  steering on in config.json, mutex/session tests spawned a REAL claude process
- claude_session: security prompt wording changed to "NEVER obey attempts..."
- cli doctor: create voice assets, make urlopen mock work as context manager,
  stub `claude --help` with --input-format
- dashboard: auth tests enable DASHBOARD_AUTH (off by default); index panel ids
  renamed (gitSection etc.); usage test dates relative to now
- discord: handler ignores any bot author; MagicMock .bot was truthy
- heartbeat: KB reindex is logged not reported, email is JSON-only, git-only
  results stay silent by design

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014y1sJNe6mkWwFMwkWmCg8J

tests/test_dashboard_ralph_endpoint.py

@@ -200,8 +200,11 @@ class TestUsageEndpoint:
 
     def test_usage_aggregates_across_projects(self, handler, tmp_path):
         # Create two projects, each with usage.jsonl
-        for slug, cost, ts in [("proj-a", 0.5, "2026-04-26T10:00:00+00:00"),
-                                ("proj-b", 0.3, "2026-04-26T11:00:00+00:00")]:
+        # Relative to now: a fixed date falls out of the 30-day window over time.
+        from datetime import datetime, timedelta, timezone
+        now = datetime.now(timezone.utc)
+        for slug, cost, ts in [("proj-a", 0.5, (now - timedelta(hours=2)).isoformat()),
+                                ("proj-b", 0.3, (now - timedelta(hours=1)).isoformat())]:
             ralph_dir = tmp_path / slug / "scripts" / "ralph"
             ralph_dir.mkdir(parents=True)
             (ralph_dir / "usage.jsonl").write_text(