fix: repair ci contract and whatsapp test stubs

extensions/imessage/secret-contract-api.ts

@@ -1 +1,4 @@
 // iMessage does not expose secret-contract surfaces.
+export const secretTargetRegistryEntries: readonly [] = [];
+
+export function collectRuntimeConfigAssignments(): void {}

extensions/whatsapp/secret-contract-api.ts

@@ -1 +1,4 @@
 // WhatsApp does not expose secret-contract surfaces.
+export const secretTargetRegistryEntries: readonly [] = [];
+
+export function collectRuntimeConfigAssignments(): void {}

extensions/whatsapp/src/test-helpers.ts

@@ -392,6 +392,7 @@ vi.mock("./auto-reply/monitor/runtime-api.js", () => ({
 
 vi.mock("./auto-reply/monitor/group-gating.runtime.js", () => ({
   hasControlCommand: (body: string) => body.trim().startsWith("/"),
+  implicitMentionKindWhen: (kind: string, enabled: boolean) => (enabled ? [kind] : []),
   normalizeE164: (value: string) => {
     const digits = String(value).replace(/\D+/g, "");
     return digits ? `+${digits}` : null;

src/plugins/contracts/boundary-invariants.test.ts

@@ -7,6 +7,7 @@ const SRC_ROOT = resolve(dirname(fileURLToPath(import.meta.url)), "../..");
 const REPO_ROOT = resolve(SRC_ROOT, "..");
 
 const ALLOWED_BUNDLED_CAPABILITY_METADATA_CONSUMERS = new Set([
+  "src/media-generation/provider-capabilities.contract.test.ts",
   "src/plugins/bundled-capability-metadata.test.ts",
   "src/plugins/contracts/boundary-invariants.test.ts",
 ]);