fix(tests): resolve workspace compilation + CJK search failures

- saas test harness: align WorkerDispatcher::new and AppState::new
  signatures with SpawnLimiter addition and init_db(&DatabaseConfig)
- growth sqlite: add CJK fallback (LIKE-based) when FTS5 unicode61
  tokenizer fails on Chinese queries (unicode61 doesn't index CJK)

crates/zclaw-saas/tests/common/mod.rs

@@ -24,9 +24,9 @@ use sqlx::PgPool;
 use std::sync::atomic::{AtomicBool, Ordering};
 use tokio_util::sync::CancellationToken;
 use tower::ServiceExt;
-use zclaw_saas::config::SaaSConfig;
+use zclaw_saas::config::{DatabaseConfig, SaaSConfig};
 use zclaw_saas::db::init_db;
-use zclaw_saas::state::AppState;
+use zclaw_saas::state::{AppState, SpawnLimiter};
 use zclaw_saas::workers::WorkerDispatcher;
 
 pub const MAX_BODY: usize = 2 * 1024 * 1024;
@@ -123,7 +123,11 @@ pub async fn build_test_app() -> (Router, PgPool) {
     drop(truncate_pool);
 
     // init_db: schema (IF NOT EXISTS, fast) + seed data
-    let pool = init_db(&db_url).await.expect("init_db failed");
+    let db_config = DatabaseConfig {
+        url: db_url,
+        ..DatabaseConfig::default()
+    };
+    let pool = init_db(&db_config).await.expect("init_db failed");
 
     let mut config = SaaSConfig::default();
     config.auth.jwt_expiration_hours = 24;
@@ -131,9 +135,10 @@ pub async fn build_test_app() -> (Router, PgPool) {
     config.rate_limit.requests_per_minute = 10_000;
     config.rate_limit.burst = 1_000;
 
-    let dispatcher = WorkerDispatcher::new(pool.clone());
+    let worker_limiter = SpawnLimiter::new("test-worker", 20);
+    let dispatcher = WorkerDispatcher::new(pool.clone(), worker_limiter.clone());
     let shutdown_token = CancellationToken::new();
-    let state = AppState::new(pool.clone(), config, dispatcher, shutdown_token).expect("AppState::new failed");
+    let state = AppState::new(pool.clone(), config, dispatcher, shutdown_token, worker_limiter).expect("AppState::new failed");
     let router = build_router(state);
     (router, pool)
 }