chore(spec): regenerate strictness ledger counts from the merged tree

The `api/` bucket moved on both sides of the merge — main widened the
analytics and automation route response schemas (+4), this branch widened
DeleteMetaItemResponseSchema (+1). The counts file carries a `merge=os-regen`
driver, so the merge left it un-text-merged; this is the regenerated value,
produced by `pnpm --filter @objectstack/spec gen:strictness-ledger`.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LpRNHxWZgSUgVnFT9mQQo4

Author: claude

docs/audits/2026-07-unknown-key-strictness-ledger.counts.md

@@ -257,7 +257,7 @@ directory rather than per file.
 | Dir | Sites |
 |---|---|
 | `ai/` | 77 |
-| `api/` | 445 |
+| `api/` | 449 |
 | `cloud/` | 83 |
 | `identity/` | 32 |
 | `integration/` | 10 |