fix(test) : disable rate limiter in test env — fixes 214 false auth failures

The login rate limiter (5 req/min) was triggering 429 on most tests
since each test creates its own authenticated client via POST /api/session/profile.
Set limit to 10000 in test env so the full suite can run unthrottled.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

config/packages/rate_limiter.yaml

@@ -8,3 +8,15 @@ framework:
             policy: sliding_window
             limit: 5
             interval: '1 minute'
+
+when@test:
+    framework:
+        rate_limiter:
+            mcp_auth:
+                policy: sliding_window
+                limit: 10000
+                interval: '1 minute'
+            login:
+                policy: sliding_window
+                limit: 10000
+                interval: '1 minute'