fix(saas): migration idempotency fixes + SCHEMA_VERSION bump to 14

- Add IF NOT EXISTS to accounts_template_assignment ALTER COLUMN
- Add IF NOT EXISTS to webhooks CREATE INDEX statements
- Add created_at/updated_at columns + ON CONFLICT DO NOTHING to industry templates
- Bump SCHEMA_VERSION 13→14 to force migration re-run on existing DB

crates/zclaw-saas/migrations/20260403000001_accounts_template_assignment.sql

@@ -2,7 +2,7 @@
 -- 用户选择行业模板后记录分配关系，用于跟踪和跳过 onboarding
 -- ON DELETE SET NULL: 模板被删除时不影响账户
 
-ALTER TABLE accounts ADD COLUMN assigned_template_id TEXT
+ALTER TABLE accounts ADD COLUMN IF NOT EXISTS assigned_template_id TEXT
   REFERENCES agent_templates(id) ON DELETE SET NULL;
 
 COMMENT ON COLUMN accounts.assigned_template_id IS

crates/zclaw-saas/migrations/20260403000002_webhooks.sql

@@ -23,6 +23,6 @@ CREATE TABLE IF NOT EXISTS webhook_deliveries (
     created_at TIMESTAMPTZ NOT NULL DEFAULT now()
 );
 
-CREATE INDEX idx_webhook_subscriptions_account ON webhook_subscriptions(account_id);
-CREATE INDEX idx_webhook_subscriptions_events ON webhook_subscriptions USING gin(events);
-CREATE INDEX idx_webhook_deliveries_pending ON webhook_deliveries(subscription_id) WHERE delivered_at IS NULL;
+CREATE INDEX IF NOT EXISTS idx_webhook_subscriptions_account ON webhook_subscriptions(account_id);
+CREATE INDEX IF NOT EXISTS idx_webhook_subscriptions_events ON webhook_subscriptions USING gin(events);
+CREATE INDEX IF NOT EXISTS idx_webhook_deliveries_pending ON webhook_deliveries(subscription_id) WHERE delivered_at IS NULL;

crates/zclaw-saas/migrations/20260405000001_industry_agent_templates.sql

@@ -10,7 +10,8 @@ INSERT INTO agent_templates (
     model, system_prompt, tools, capabilities, temperature, max_tokens,
     visibility, status, current_version,
     soul_content, scenarios, welcome_message, quick_commands,
-    personality, communication_style, source_id, version
+    personality, communication_style, source_id, version,
+    created_at, updated_at
 ) VALUES (
     'edu-teacher-001',
     '教学助手',
@@ -55,8 +56,9 @@ INSERT INTO agent_templates (
     'friendly',
     '温暖、耐心、善于用易懂的语言解释复杂概念',
     'education-teacher',
-    1
-);
+    1,
+    NOW(), NOW()
+) ON CONFLICT (id) DO NOTHING;
 
 -- ============================================================
 -- 2. Healthcare — 医疗行政助手
@@ -66,7 +68,8 @@ INSERT INTO agent_templates (
     model, system_prompt, tools, capabilities, temperature, max_tokens,
     visibility, status, current_version,
     soul_content, scenarios, welcome_message, quick_commands,
-    personality, communication_style, source_id, version
+    personality, communication_style, source_id, version,
+    created_at, updated_at
 ) VALUES (
     'healthcare-admin-001',
     '医疗行政助手',
@@ -111,8 +114,9 @@ INSERT INTO agent_templates (
     'professional',
     '专业、准确、注重细节，提供技术深度和可操作建议',
     'healthcare-admin',
-    1
-);
+    1,
+    NOW(), NOW()
+) ON CONFLICT (id) DO NOTHING;
 
 -- ============================================================
 -- 3. Design (Shantou) — 设计助手
@@ -122,7 +126,8 @@ INSERT INTO agent_templates (
     model, system_prompt, tools, capabilities, temperature, max_tokens,
     visibility, status, current_version,
     soul_content, scenarios, welcome_message, quick_commands,
-    personality, communication_style, source_id, version
+    personality, communication_style, source_id, version,
+    created_at, updated_at
 ) VALUES (
     'design-shantou-001',
     '设计助手',
@@ -167,5 +172,6 @@ INSERT INTO agent_templates (
     'creative',
     '富有创意、思维开放，鼓励探索新想法和解决方案',
     'design-shantou',
-    1
-);
+    1,
+    NOW(), NOW()
+) ON CONFLICT (id) DO NOTHING;

crates/zclaw-saas/src/db.rs

@@ -5,7 +5,7 @@ use sqlx::PgPool;
 use crate::config::DatabaseConfig;
 use crate::error::SaasResult;
 
-const SCHEMA_VERSION: i32 = 13;
+const SCHEMA_VERSION: i32 = 14;
 
 /// 初始化数据库
 pub async fn init_db(config: &DatabaseConfig) -> SaasResult<PgPool> {