fix(brain-plugins): correct lastUpdated date for 4 T2 entries (was future-dated)

Code-quality review T2 (commit 6425725) flagged I2: `lastUpdated`
"2026-05-12T00:00:00.000Z" was future-dated. Actual T2 commit was on
2026-05-11 (commit timestamp Mon May 11 15:17:53 2026 +0300). Plan
filename used 2026-05-12 prefix (plan date), и это leaked в данные.

Fix: 4 entries (code-review, security-guidance, pr-review-toolkit, telegram)
lastUpdated → "2026-05-11T12:18:00.000Z" (близко к actual T2 commit time).

manifest.json brain-internal sha for plugins-manifest.json updated:
  a3390463... → d88008b2...

I1 (`scope: "user"` vs `target: "consumer"` semantic concern) — НЕ исправляется
этим commit'ом. Reasoning: brain's install-plugins.sh не читает `scope` field
(только filter по `target`). `claude plugin install` CLI принимает scope
через flag, не из manifest. Значение `scope: "user"` для registered-only
entries = documentation-intent "destination user-level when installed on
consumer's machine" — consistent с pattern существующих 8 entries (все
scope: "user"). Reviewer's concern valid as readability, не functional bug.
Документация semantics будет в routing.md v1.2 (Task 4).

verify.sh exit 0 после fix; filter regression unchanged (8 user, 6 consumer).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

manifest.json

@@ -48,7 +48,7 @@
       "user-level-files/hooks/skill-marker.py": "2d2ff205ae1390f87d1f8162e238729fa4d8c12340f02016ee1d54b3fff014a4",
       "user-level-files/marketplaces.json": "9017c313525cb78f2078ba79fd974260cb8016f69dbb9a099dcff7b4153af300",
       "user-level-files/mcp-user.template.json": "80cce6f971fa3dfca5533becab009060b703c914196a92ac3d6b2e3768b8b923",
-      "user-level-files/plugins-manifest.json": "a3390463761998bc666a5e6a48d274747fb19fbd8577ee3ffc7cf1c15d99e0c6",
+      "user-level-files/plugins-manifest.json": "d88008b2d44c98d82da431304b316e8cd0c171a3defdd05d6dd9ad2078db4fad",
       "user-level-files/settings-fragment.json": "1af1b05ed51052bb487a0a2df8d6fba19a22328fe012cf1c36ec8ef3817e20b7"
     }
   }

user-level-files/plugins-manifest.json

@@ -107,7 +107,7 @@
         "installPath": null,
         "version": "00679aef889e",
         "installedAt": null,
-        "lastUpdated": "2026-05-12T00:00:00.000Z",
+        "lastUpdated": "2026-05-11T12:18:00.000Z",
         "gitCommitSha": "00679aef889efe36bb0389f81d70b6229a2013ee",
         "installMethod": "registered-only-not-cached",
         "target": "consumer",
@@ -120,7 +120,7 @@
         "installPath": null,
         "version": "00679aef889e",
         "installedAt": null,
-        "lastUpdated": "2026-05-12T00:00:00.000Z",
+        "lastUpdated": "2026-05-11T12:18:00.000Z",
         "gitCommitSha": "00679aef889efe36bb0389f81d70b6229a2013ee",
         "installMethod": "registered-only-not-cached",
         "target": "consumer",
@@ -133,7 +133,7 @@
         "installPath": null,
         "version": "00679aef889e",
         "installedAt": null,
-        "lastUpdated": "2026-05-12T00:00:00.000Z",
+        "lastUpdated": "2026-05-11T12:18:00.000Z",
         "gitCommitSha": "00679aef889efe36bb0389f81d70b6229a2013ee",
         "installMethod": "registered-only-not-cached",
         "target": "consumer",
@@ -146,7 +146,7 @@
         "installPath": null,
         "version": "00679aef889e",
         "installedAt": null,
-        "lastUpdated": "2026-05-12T00:00:00.000Z",
+        "lastUpdated": "2026-05-11T12:18:00.000Z",
         "gitCommitSha": "00679aef889efe36bb0389f81d70b6229a2013ee",
         "installMethod": "registered-only-not-cached",
         "target": "consumer",