feat: add Z12/Z13 bind APIs, stock import, and sync docs

Enable auto default sync channels on agent activate, bind-code/phone confirm flows, publish ALTER, and align admin/yuheng docs with the production bind path.

platform/internal/meta/backfill_import.go

@@ -0,0 +1,85 @@
+package meta
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+)
+
+// BackfillImportResult Z9e 扫库补齐 import/export 的结果。
+type BackfillImportResult struct {
+	Scanned int      `json:"scanned"`
+	Updated int      `json:"updated"`
+	Skipped int      `json:"skipped"`
+	DryRun  bool     `json:"dry_run"`
+	Slugs   []string `json:"updated_slugs,omitempty"`
+	Message string   `json:"message,omitempty"`
+}
+
+// PublishedLister 列出全部已发布应用（跨租户，供 Z9e 启动扫库）。
+type PublishedLister interface {
+	ListPublishedApps(ctx context.Context) ([]*AppRecord, error)
+}
+
+// BackfillDefaultImportExport 遍历已发布蓝图，对可写 resource 补齐 import/export 并落库（Z9e）。
+// dryRun=true 只统计不写库。tenantID>0 时仅处理该租户。
+func BackfillDefaultImportExport(ctx context.Context, store Store, dryRun bool) (*BackfillImportResult, error) {
+	return BackfillDefaultImportExportForTenant(ctx, store, 0, dryRun)
+}
+
+// BackfillDefaultImportExportForTenant 同 BackfillDefaultImportExport；tenantID=0 表示全库。
+func BackfillDefaultImportExportForTenant(ctx context.Context, store Store, tenantID int64, dryRun bool) (*BackfillImportResult, error) {
+	if store == nil {
+		return nil, fmt.Errorf("meta store nil")
+	}
+	lister, ok := store.(PublishedLister)
+	if !ok {
+		return nil, fmt.Errorf("meta store does not support ListPublishedApps")
+	}
+	apps, err := lister.ListPublishedApps(ctx)
+	if err != nil {
+		return nil, err
+	}
+	out := &BackfillImportResult{DryRun: dryRun, Slugs: make([]string, 0)}
+	for _, app := range apps {
+		if app == nil || app.Blueprint == nil {
+			continue
+		}
+		if tenantID > 0 && app.TenantID != tenantID {
+			continue
+		}
+		out.Scanned++
+		before, _ := json.Marshal(app.Blueprint)
+		app.Blueprint.EnsureDefaultImportExport()
+		after, _ := json.Marshal(app.Blueprint)
+		if string(before) == string(after) {
+			out.Skipped++
+			continue
+		}
+		out.Updated++
+		out.Slugs = append(out.Slugs, fmt.Sprintf("%d/%s", app.TenantID, app.Slug))
+		if dryRun {
+			continue
+		}
+		if err := store.Save(ctx, app); err != nil {
+			return out, fmt.Errorf("save %s: %w", app.Slug, err)
+		}
+	}
+	out.Message = fmt.Sprintf("scanned=%d updated=%d skipped=%d dry_run=%v", out.Scanned, out.Updated, out.Skipped, dryRun)
+	return out, nil
+}
+
+// RunBackfillDefaultImportExportOnBoot 启动时扫库（失败只打日志，不阻断启动）。
+func RunBackfillDefaultImportExportOnBoot(ctx context.Context, store Store) {
+	res, err := BackfillDefaultImportExport(ctx, store, false)
+	if err != nil {
+		log.Printf("Z9e backfill import ops: %v", err)
+		return
+	}
+	if res != nil && res.Updated > 0 {
+		log.Printf("Z9e backfill import ops: %s slugs=%v", res.Message, res.Slugs)
+	} else if res != nil {
+		log.Printf("Z9e backfill import ops: %s", res.Message)
+	}
+}