feat: harden loose-offline sync for user JWT, schema, and console ops

Enable Binding-scoped agent push/pull, empty-table schema ensure, SyncPage inspect/drop-table, default module import, and agent-bound publish docs from the 宇恒联调意见.

Co-authored-by: Cursor <cursoragent@cursor.com>

platform/internal/meta/migrate.go

@@ -124,6 +124,14 @@ CREATE TABLE IF NOT EXISTS platform_meta.role_permissions (
 ALTER TABLE platform_meta.agent_accounts
     ADD COLUMN IF NOT EXISTS role_id BIGINT;
 
+-- Z8b：智能体绑定同步通道 / 线上库 / 模块落库名
+ALTER TABLE platform_meta.agent_accounts
+    ADD COLUMN IF NOT EXISTS channel_id VARCHAR(128) NOT NULL DEFAULT '';
+ALTER TABLE platform_meta.agent_accounts
+    ADD COLUMN IF NOT EXISTS online_db_id VARCHAR(128) NOT NULL DEFAULT '';
+ALTER TABLE platform_meta.agent_accounts
+    ADD COLUMN IF NOT EXISTS database_name VARCHAR(128) NOT NULL DEFAULT '';
+
 -- 租户邀请码：pending 用户凭码加入已有公司
 CREATE TABLE IF NOT EXISTS platform_meta.tenant_invites (
     invite_id   BIGSERIAL PRIMARY KEY,

platform/internal/meta/store.go

@@ -71,6 +71,7 @@ type AppSummary struct {
 	Name         string    `json:"name"`
 	Status       AppStatus `json:"status"`
 	SchemaName   string    `json:"schema_name,omitempty"`
+	DatabaseName string    `json:"database_name,omitempty"`
 	PageCount    int       `json:"page_count"`
 	EntityCount  int       `json:"entity_count"`
 	UpdatedAt    time.Time `json:"updated_at"`
@@ -141,13 +142,14 @@ func (s *MemoryStore) ListByTenant(_ context.Context, tenantID int64) ([]AppSumm
 
 func summarizeApp(app *AppRecord) AppSummary {
 	sum := AppSummary{
-		AppID:      app.AppID,
-		Slug:       app.Slug,
-		Name:       app.Name,
-		Status:     app.Status,
-		SchemaName: app.SchemaName,
-		UpdatedAt:  app.UpdatedAt,
-		CreatedAt:  app.CreatedAt,
+		AppID:        app.AppID,
+		Slug:         app.Slug,
+		Name:         app.Name,
+		Status:       app.Status,
+		SchemaName:   app.SchemaName,
+		DatabaseName: app.DatabaseName,
+		UpdatedAt:    app.UpdatedAt,
+		CreatedAt:    app.CreatedAt,
 	}
 	if app.Blueprint != nil {
 		sum.PageCount = len(app.Blueprint.Pages)