fix: 三端联调测试 2 P0 + 6 P1 + 2 P2 修复

P0-1: SaaS relay 模型别名解析 — "glm-4-flash" → "glm-4-flash-250414" (resolve_model)
P0-2: config.rs interpolate_env_vars UTF-8 修复 (chars 迭代器替代 bytes as char)
      + DB 启动编码检查 + docker-compose UTF-8 编码参数

P1-3: UI 模型选择器覆盖 Agent 默认模型 (model_override 全链路: TS→Tauri→Rust kernel)
P1-6: 知识搜索管道修复 — seed_knowledge 创建 chunks + 默认分类 (seed/uploaded/distillation)
P1-7: 用量限额从当前 Plan 读取 (非 stale usage 表)
P1-8: relay 双维度配额检查 (relay_requests + input_tokens)

P2-9: SSE 路径 token 计数修复 — 流结束检测替代固定 500ms sleep + billing increment

crates/zclaw-saas/src/knowledge/service.rs

@@ -632,6 +632,8 @@ pub async fn unified_search(
 // === 种子知识冷启动 ===
 
 /// 为指定行业插入种子知识（幂等）
+///
+/// P1-6 修复: 同时创建 knowledge_chunks 以支持搜索
 pub async fn seed_knowledge(
     pool: &PgPool,
     industry_id: &str,
@@ -684,6 +686,24 @@ pub async fn seed_knowledge(
         .execute(pool)
         .await?;
 
+        // 创建 chunks 以支持搜索（与 distill_knowledge worker 一致）
+        let chunks = chunk_content(content, 500, 50);
+        for (chunk_idx, chunk_text) in chunks.iter().enumerate() {
+            let chunk_id = uuid::Uuid::new_v4().to_string();
+            sqlx::query(
+                "INSERT INTO knowledge_chunks (id, item_id, content, keywords, chunk_index, created_at) \
+                 VALUES ($1, $2, $3, $4, $5, $6)"
+            )
+            .bind(&chunk_id)
+            .bind(&id)
+            .bind(chunk_text)
+            .bind(&kw_json)
+            .bind(chunk_idx as i32)
+            .bind(&now)
+            .execute(pool)
+            .await?;
+        }
+
         created += 1;
     }
     Ok(created)