feat(runtime): seed-replayer reports skipped for host stamp-on-progress (cloud#853)

The `seed-replayer` service returned { inserted, updated, errors } but not
`skipped`, so a cloud host could not distinguish an all-skip replay (seed data
already present — a no-op) from the zero-summary early-returns that never ran
the loader (no org / no metadata / no datasets). Both read as
inserted=updated=0, so the host couldn't safely stamp its seed-once record for
the all-skip case → re-replayed every cold boot.

Return `skipped: result.summary.totalSkipped`; early-returns report skipped:0.
Lets cloud#853's decideSeedStamp stamp on progress (incl. all-skip) while still
declining a genuine no-loader zero summary. Additive, backward compatible.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01APnSDJneEDRh3Z51KGCLga

Author: claude

.changeset/seed-replayer-skipped.md

@@ -0,0 +1,19 @@
+---
+"@objectstack/runtime": patch
+---
+
+feat(runtime): seed-replayer reports `skipped` so hosts can stamp seed-once on progress
+
+The `seed-replayer` kernel service returned `{ inserted, updated, errors }` but
+not `skipped`. A cloud host therefore could not tell an **all-skip replay**
+(the env's seed data is already present — a no-op) apart from the
+zero-summary early-returns that never ran the loader (no organization, no
+metadata service, no datasets). Both looked like `inserted = updated = 0`, so
+the host could not safely stamp its seed-once record for the all-skip case and
+re-ran the full remote replay on every cold boot.
+
+Add `skipped: result.summary.totalSkipped` to the replayer's return; the
+early-returns report `skipped: 0`. This lets a host (cloud#853's
+`decideSeedStamp`) stamp on progress — including an all-skip replay — while
+still declining to stamp a genuine no-loader zero-summary. Additive and
+backward compatible; existing consumers ignore the new field.

packages/runtime/src/app-plugin.ts

@@ -765,17 +765,17 @@ export class AppPlugin implements Plugin {
                  const metadataNow = ctx.getService('metadata') as IMetadataService | undefined;
                  const loggerRef = ctx.logger;
                  const replayer = async (organizationId: string) => {
-                     if (!organizationId) return { inserted: 0, updated: 0, errors: [] as any[] };
+                     if (!organizationId) return { inserted: 0, updated: 0, skipped: 0, errors: [] as any[] };
                      const md = metadataNow ?? (ctx.getService('metadata') as IMetadataService | undefined);
                      if (!md) {
                          loggerRef.warn('[seed-replayer] metadata service unavailable');
-                         return { inserted: 0, updated: 0, errors: [] as any[] };
+                         return { inserted: 0, updated: 0, skipped: 0, errors: [] as any[] };
                      }
                      const datasetsNow = (() => {
                          try { return kernel?.getService?.('seed-datasets'); } catch { return merged; }
                      })() ?? merged;
                      if (!Array.isArray(datasetsNow) || datasetsNow.length === 0) {
-                         return { inserted: 0, updated: 0, errors: [] as any[] };
+                         return { inserted: 0, updated: 0, skipped: 0, errors: [] as any[] };
                      }
                      const seedLoader = new SeedLoaderService(ql, md, loggerRef);
                      const { SeedLoaderRequestSchema } = await import('@objectstack/spec/data');
@@ -796,6 +796,12 @@ export class AppPlugin implements Plugin {
                      return {
                          inserted: result.summary.totalInserted,
                          updated: result.summary.totalUpdated,
+                         // `skipped` lets a cloud host distinguish an all-skip
+                         // replay (data already present) from the zero-summary
+                         // early-returns above (which never ran the loader), so
+                         // it can stamp its seed-once record on progress rather
+                         // than re-replaying every cold boot (cloud#853).
+                         skipped: result.summary.totalSkipped,
                          errors: result.errors,
                      };
                  };