fix(git-sync): don't trash a page on cross-space move (move-to-space data loss)

A page moved to another space with git-sync enabled was sent to Trash and
vanished from BOTH vaults. The source space's push phase sees the moved-away
page's file gone from its vault and calls deletePage -> soft-delete, even though
the page still lives in the destination space.

Thread the reconciling spaceId into the bind context and, in deletePage, skip the
soft-delete when the page's CURRENT space differs from the space being reconciled
(a move-out): only the vault file is dropped, the page is preserved. Genuine
in-space deletions are unaffected (space matches).

Found by autonomous QA (web-test-orchestrator). Control: with git-sync OFF the
move keeps deleted_at NULL; with it ON the page was trashed.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

apps/server/src/integrations/git-sync/services/git-sync.orchestrator.ts

@@ -368,7 +368,11 @@ export class GitSyncOrchestrator implements OnModuleInit, OnModuleDestroy {
     const { runCycle } = await loadGitSync();
     const settings = await this.buildSettings(spaceId);
     const vault = await this.vaultRegistry.getVault(spaceId);
-    const client = this.dataSource.bind({ workspaceId, userId: serviceUserId });
+    const client = this.dataSource.bind({
+      workspaceId,
+      userId: serviceUserId,
+      spaceId,
+    });
 
     const result = await runCycle({
       // Cooperative-abort signal from the per-space lock: if a heartbeat refresh