[AZ-1074] [AZ-1075] Cycle 9 closeout: security, tests, metrics

Resolve F-AZ1074-1/2 (collection caps, generic gRPC internal errors).
Standalone integration compose stack, docs, security audit, perf and retro.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/run-tests.sh

@@ -5,7 +5,7 @@ SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 PROJECT_ROOT="$(dirname "$SCRIPT_DIR")"
 
 cleanup() {
-    docker compose -f "$PROJECT_ROOT/docker-compose.yml" -f "$PROJECT_ROOT/docker-compose.tests.yml" down --remove-orphans || true
+    docker compose -f "$PROJECT_ROOT/docker-compose.tests.yml" down --remove-orphans || true
 }
 trap cleanup EXIT
 
@@ -173,7 +173,6 @@ fi
 INTEGRATION_TESTS_MODE="$mode" \
 INTEGRATION_KEEP_STATE="$INTEGRATION_KEEP_STATE_VALUE" \
     docker compose \
-    -f "$PROJECT_ROOT/docker-compose.yml" \
     -f "$PROJECT_ROOT/docker-compose.tests.yml" \
     up --build --abort-on-container-exit --exit-code-from integration-tests