feat(git-sync): remove the per-cycle delete cap; deletes apply + are logged every cycle

The delete cap (GIT_SYNC_MAX_DELETES_PER_CYCLE, default 5) was a defense-in-depth
guard that SUPPRESSED a cycle's deletions when the planned count exceeded the
limit. In practice it was a crutch over engine correctness that also blocked
legitimate deletes: deleting a folder with many child pages is a normal action,
and git-sync deletes are SOFT (Trash, reversible), so a blocking limit has little
upside and real downside. There is also no user-facing surface to "confirm" a
large delete from a background sync — the only channel is the operator log.

So: drop the cap entirely. Deletes apply unconditionally; every cycle already
logs its full push plan, per-action `delete: <pageId>` lines, and completion
counts through the engine `log`, so what was deleted (and what was skipped) is
always recorded. Engine correctness (the reconcile/layout/round-trip tests) is
what prevents phantom deletions — not a blocking cap.

Removed: orchestrator `resolveApplyClient` cap hook + `maxDeletes`,
`getGitSyncMaxDeletesPerCycle`, the `GIT_SYNC_MAX_DELETES_PER_CYCLE` env/validation/.env.example,
and the cap tests. (The engine's generic optional `resolveApplyClient` hook is
left as an unused extension point.)

server tsc clean, git-sync + environment jest 174.

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

apps/server/src/integrations/environment/environment.service.ts

@@ -411,20 +411,6 @@ export class EnvironmentService {
     return Number.isFinite(parsed) && parsed > 0 ? parsed : 2000;
   }
 
-  /**
-   * Defense-in-depth absolute cap on how many pages a single push cycle may
-   * soft-delete (default 5). A non-convergent / phantom-absence cycle whose push
-   * plan would delete more than this is forced to skip deletions that cycle (the
-   * orchestrator logs a WARNING). A non-positive or unparseable value falls back
-   * to the default 5 so the cap can never be silently disabled.
-   */
-  getGitSyncMaxDeletesPerCycle(): number {
-    const parsed = parseInt(
-      this.configService.get<string>('GIT_SYNC_MAX_DELETES_PER_CYCLE', '5'),
-      10,
-    );
-    return Number.isFinite(parsed) && parsed > 0 ? parsed : 5;
-  }
 
   /**
    * The service user id git-sync writes are attributed to. Required when sync is