test(stack): use config.authStrategy instead of the deprecated config.strategy

The identity suites passed a federation strategy via `config.strategy`, which
logs a deprecation warning ("use config.authStrategy instead"). Switched both to
`authStrategy`. Runtime behaviour is unchanged — the client honours both — this
just drops the warning from the integration logs.

Claude-Session: https://claude.ai/code/session_01MxTTPaPP16m6br7Hoab94w

Author: coderdan

packages/stack/integration/identity/lock-context.integration.test.ts

@@ -154,14 +154,14 @@ beforeAll(async () => {
   // `global-setup.ts`.
   //
   // `create()` returns a `Result` — unwrap to the strategy itself, which is what
-  // `config.strategy` expects (it calls `.getToken()` on it).
+  // `config.authStrategy` expects (it calls `.getToken()` on it).
   const federation = OidcFederationStrategy.create(crn, clerkJwtProvider())
   if (federation.failure) {
     throw new Error(`[federation]: ${federation.failure.message}`)
   }
   client = await EncryptionV3({
     schemas: [schema],
-    config: { strategy: federation.data },
+    config: { authStrategy: federation.data },
   })
   ops = createEncryptionOperatorsV3(client)
   db = drizzle({ client: sqlClient })

packages/stack/integration/identity/matrix-identity.integration.test.ts

@@ -32,7 +32,7 @@ describe('v3 typed client identity-aware operations (live)', () => {
     if (!crn) {
       throw new Error('CS_WORKSPACE_CRN must be set for identity tests')
     }
-    // `create()` returns a `Result`; unwrap to the strategy `config.strategy`
+    // `create()` returns a `Result`; unwrap to the strategy `config.authStrategy`
     // expects. `clerkJwtProvider()` asserts CLERK_MACHINE_TOKEN and re-mints on
     // every re-federation.
     const federation = OidcFederationStrategy.create(crn, clerkJwtProvider())
@@ -41,7 +41,7 @@ describe('v3 typed client identity-aware operations (live)', () => {
     }
     client = await EncryptionV3({
       schemas: [users],
-      config: { strategy: federation.data },
+      config: { authStrategy: federation.data },
     })
   }, 30000)