feat: expand SGS hall POI adaptation

.superpowers/sdd/task-2-report.md

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+# Task 2 Report
+
+Status: DONE_WITH_CONCERNS
+
+Files changed:
+- `src/data/adapters/sgsSdkGuideAdapter.ts`
+- `src/domain/museum.ts`
+
+Commands run:
+- `node scripts/check-sgs-hall-poi-adapter.mjs`
+  - Output: `SGS hall POI adapter smoke check passed`
+- `pnpm type-check`
+  - Output summary: `vue-tsc --noEmit` completed successfully.
+
+Commits created:
+- `08a6bcb` in implementer worktree: `feat: expand SGS hall POI adaptation`
+- Main workspace integrated manually because cherry-pick was blocked by existing local changes to the same files.
+
+Self-review notes:
+- Adapter now includes public exhibition-space whitelist and keyword checks.
+- `toMuseumHallPoisFromSgs` now supports entrance anchors, space-center fallback, standalone space fallback, and diagnostics helper.
+- Main integration preserves stronger Task 1 semantics approved by user: `backend-sgs-sdk-hall-entrance` requires both entrance coordinates and route node, and later real entrance anchors can upgrade a space-center POI.
+- `src/domain/museum.ts` already had/keeps typed hall fields (`MuseumPoiKind`, `MuseumPoiEntrance`, hall/source fields, preview fields) required by adapter output.
+
+Concerns:
+- Manual integration was required because the main workspace already had overlapping uncommitted changes in adapter/domain files.
+- Task 3 will add repository diagnostics consumption of `createSgsHallPoiDiagnostics`.