fix(docs): re-anchor system-context census after docstring line shift

The disclosure-completeness docstring insertion in engine.ts shifted every
line after it by 26; check-system-context-census.mjs --fix re-anchored the
one row that rotted off its line (the ScopedContext.isSystem getter, row 63).
Pure line rot, no population or classification change (still 106 elevation
read sites in 20 packages across 45 files, all anchored).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0112hMx9hjJ9BgB28X97DS68

Author: claude

content/docs/permissions/system-context.mdx

@@ -180,7 +180,7 @@ a reader tracing where elevation travels needs them.
 | # | Site | Package | What it does |
 |:--|:---|:---|:---|
 | 62 | `objectql/src/engine.ts:3543` | objectql | Propagates `isSystem` into the hook session so hooks can tell engine self-writes from user writes |
-| 63 | `objectql/src/engine.ts:14496` | objectql | `ScopedContext.isSystem` getter — re-exposes the underlying execution context's flag |
+| 63 | `objectql/src/engine.ts:14523` | objectql | `ScopedContext.isSystem` getter — re-exposes the underlying execution context's flag |
 | 64 | `plugin-reports/src/report-service.ts:556` | plugin-reports | Threads the flag into the engine call that runs a report |
 | 65 | `body-runner.ts:279` | runtime | Rebuilds an `ExecutionContext` from a hook session, carrying the flag across |