diff --git a/crates/zclaw-growth/src/storage/sqlite.rs b/crates/zclaw-growth/src/storage/sqlite.rs
index 4ecaa51..e1e1b75 100644
--- a/crates/zclaw-growth/src/storage/sqlite.rs
+++ b/crates/zclaw-growth/src/storage/sqlite.rs
@@ -497,25 +497,63 @@ impl VikingStorage for SqliteStorage {
 
             match fts_candidates {
                 Ok(rows) if !rows.is_empty() => rows,
-                Ok(_) => {
-                    // FTS5 returned no results — memories are genuinely irrelevant.
-                    // Do NOT fall back to scope scan (that was the root cause of
-                    // injecting "广东光华" memories into "1+9" queries).
+                Ok(_) | Err(_) => {
+                    // FTS5 returned no results or failed — check if query contains CJK
+                    // characters. unicode61 tokenizer doesn't index CJK, so fall back
+                    // to LIKE-based search for CJK queries.
+                    let has_cjk = query.chars().any(|c| {
+                        matches!(c, '\u{4E00}'..='\u{9FFF}' | '\u{3400}'..='\u{4DBF}' | '\u{F900}'..='\u{FAFF}')
+                    });
+
+                    if !has_cjk {
+                        tracing::debug!(
+                            "[SqliteStorage] FTS5 returned no results for query: '{}'",
+                            query.chars().take(50).collect::<String>()
+                        );
+                        return Ok(Vec::new());
+                    }
+
                     tracing::debug!(
-                        "[SqliteStorage] FTS5 returned no results for query: '{}'",
+                        "[SqliteStorage] FTS5 miss for CJK query, falling back to LIKE: '{}'",
                         query.chars().take(50).collect::<String>()
                     );
-                    return Ok(Vec::new());
-                }
-                Err(e) => {
-                    // FTS5 syntax error after sanitization — return empty rather
-                    // than falling back to irrelevant scope-based results.
-                    tracing::debug!(
-                        "[SqliteStorage] FTS5 query failed for '{}': {}",
-                        query.chars().take(50).collect::<String>(),
-                        e
-                    );
-                    return Ok(Vec::new());
+
+                    let pattern = format!("%{}%", query);
+                    if let Some(ref scope) = options.scope {
+                        sqlx::query_as::<_, MemoryRow>(
+                            r#"
+                            SELECT uri, memory_type, content, keywords, importance,
+                                   access_count, created_at, last_accessed, overview, abstract_summary
+                            FROM memories
+                            WHERE content LIKE ?
+                              AND uri LIKE ?
+                            ORDER BY importance DESC, access_count DESC
+                            LIMIT ?
+                            "#
+                        )
+                        .bind(&pattern)
+                        .bind(format!("{}%", scope))
+                        .bind(limit as i64)
+                        .fetch_all(&self.pool)
+                        .await
+                        .unwrap_or_default()
+                    } else {
+                        sqlx::query_as::<_, MemoryRow>(
+                            r#"
+                            SELECT uri, memory_type, content, keywords, importance,
+                                   access_count, created_at, last_accessed, overview, abstract_summary
+                            FROM memories
+                            WHERE content LIKE ?
+                            ORDER BY importance DESC, access_count DESC
+                            LIMIT ?
+                            "#
+                        )
+                        .bind(&pattern)
+                        .bind(limit as i64)
+                        .fetch_all(&self.pool)
+                        .await
+                        .unwrap_or_default()
+                    }
                 }
             }
         } else {
diff --git a/crates/zclaw-saas/tests/common/mod.rs b/crates/zclaw-saas/tests/common/mod.rs
index 5fdb32e..d419f7d 100644
--- a/crates/zclaw-saas/tests/common/mod.rs
+++ b/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)
 }