feat: improve move-draft-to-current with differential sync

Implement differential sync for organization structure and positions
instead of delete-all-and-insert-all approach.

Changes:
- Add OrgIdMapping and AllOrgMappings interfaces for tracking ID mappings
- Implement syncOrgLevel() helper for differential sync per org level
- Add syncPositionsForPosMaster() helper for position table sync
- Process org levels bottom-up (Child4→Child3→Child2→Child1→Root)
- Use ancestorDNA matching with Like operator for descendant sync
- Cascade delete positions before deleting org nodes
- Batch DELETE/UPDATE/INSERT operations for better performance
- Track draft→current ID mappings for position updates
- Add comprehensive documentation in docs/move-draft-to-current.md

Benefits:
- Preserve IDs for unchanged nodes (better tracking)
- More efficient (fewer database operations)
- Better data integrity with proper FK handling
- Sync all descendants under given rootDnaId

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/interfaces/OrgMapping.ts

@@ -0,0 +1,24 @@
+/**
+ * Type definitions for organization mapping used in move-draft-to-current function
+ */
+
+/**
+ * Maps draft organization IDs to current organization IDs
+ * - byAncestorDNA: Maps ancestorDNA to current ID for lookup
+ * - byDraftId: Maps draft ID to current ID for position updates
+ */
+export interface OrgIdMapping {
+  byAncestorDNA: Map<string, string>;
+  byDraftId: Map<string, string>;
+}
+
+/**
+ * Contains mappings for all organization levels
+ */
+export interface AllOrgMappings {
+  orgRoot: OrgIdMapping;
+  orgChild1: OrgIdMapping;
+  orgChild2: OrgIdMapping;
+  orgChild3: OrgIdMapping;
+  orgChild4: OrgIdMapping;
+}