feat(delivery): support multi-instance scheduling on a single host

- Per-host instance limit (DELIVERY_HOST_INSTANCE_LIMIT, default 4)
- Optional target_host to pin a host from the candidate pool
- Regenerate swagger docs

server/docs/swagger.yaml

@@ -22,46 +22,6 @@ definitions:
     - storage_gi
     - target_id
     type: object
-  handler.targetPayload:
-    properties:
-      awx_inventory_id:
-        type: integer
-      awx_template_id:
-        type: integer
-      metadata:
-        additionalProperties: {}
-        type: object
-      name:
-        type: string
-      target_type:
-        type: string
-    required:
-    - awx_inventory_id
-    - awx_template_id
-    - name
-    - target_type
-    type: object
-  model.DeploymentTarget:
-    properties:
-      awx_inventory_id:
-        type: integer
-      awx_template_id:
-        type: integer
-      created_at:
-        type: string
-      enabled:
-        type: boolean
-      id:
-        type: integer
-      metadata:
-        type: string
-      name:
-        type: string
-      target_type:
-        type: string
-      updated_at:
-        type: string
-    type: object
   model.ResourceQuota:
     properties:
       business_line_id:
@@ -101,22 +61,57 @@ definitions:
     type: object
   service.MySQLDeliveryInput:
     properties:
+      binlog_expire_logs_seconds:
+        type: integer
       business_line_id:
         type: integer
+      character_set:
+        type: string
+      collation:
+        type: string
       cpu_milli:
         type: integer
+      data_disk:
+        type: string
+      innodb_flush_log_at_trx_commit:
+        type: integer
+      innodb_io_capacity:
+        type: integer
+      innodb_redo_log_capacity:
+        type: string
       instance_name:
         type: string
+      long_query_time:
+        type: number
+      lower_case_table_names:
+        type: integer
+      max_binlog_size:
+        type: string
+      max_connections:
+        description: 高级参数（选填，零值视为未设置）
+        type: string
       memory_mi:
         type: integer
+      mysql_port:
+        type: integer
       mysql_version:
         type: string
       namespace:
         type: string
       storage_gi:
         type: integer
+      sync_binlog:
+        type: integer
+      target_host:
+        description: 调度控制（选填）：点名候选池内主机跳过自动选机，端口/配额/实机守卫照常执行
+        type: string
       target_id:
         type: integer
+      timezone:
+        description: 数据库配置（选填，缺省由 playbook 基线兜底）
+        type: string
+      topology:
+        type: string
     required:
     - business_line_id
     - cpu_milli
@@ -220,7 +215,12 @@ paths:
       - delivery
   /auth/api/v1/delivery/targets:
     get:
-      description: 返回所有已启用的部署目标（如 k8s 集群、主机池）
+      description: 从 AWX 动态返回可用 Job Template 及其 Inventory hosts
+      parameters:
+      - description: 组件过滤，例如 mysql
+        in: query
+        name: component
+        type: string
       produces:
       - application/json
       responses:
@@ -239,49 +239,12 @@ paths:
       summary: 获取可用部署目标
       tags:
       - delivery
-    post:
-      consumes:
-      - application/json
-      description: 管理员创建新的部署目标（目前仅支持 k8s 类型）
-      parameters:
-      - description: 目标配置
-        in: body
-        name: body
-        required: true
-        schema:
-          $ref: '#/definitions/handler.targetPayload'
-      produces:
-      - application/json
-      responses:
-        "201":
-          description: 目标已创建
-          schema:
-            $ref: '#/definitions/model.DeploymentTarget'
-        "400":
-          description: 参数错误
-          schema:
-            additionalProperties: true
-            type: object
-        "401":
-          description: 未授权
-          schema:
-            additionalProperties: true
-            type: object
-        "409":
-          description: 名称冲突
-          schema:
-            additionalProperties: true
-            type: object
-      security:
-      - BearerAuth: []
-      summary: 创建部署目标
-      tags:
-      - delivery
   /auth/api/v1/delivery/tasks:
     get:
       description: 返回当前用户可见的交付任务列表（管理员可见全部）
       parameters:
       - description: 业务线 ID 过滤
+        format: int64
         in: query
         name: business_line_id
         type: integer