fix(02): revise plans per checker (B1 + 4 flags) — add tabs permission for D-P2-02

- BLOCKER B1: add `tabs` to manifest.json permissions (DEC-011 Amendment 1
  cites Phase 2 D-P2-02 meta.urls feature as justification). Honors
  D-P2-02 "all tabs visible" wording verbatim. Updates manifest-i18n test
  expected permission list lockstep.
- F1: add A28 harness assertion for REQ-archive-layout strict zip-layout
  verification (5 entries, no extras).
- F2: createArchive empty-tracker fallback removed; logs warn + sets
  urls:[] instead of fake [extension-origin URL]. 02-01 RED test pins
  empty-tracker → urls:[].
- F3: 02-02 Task 3 prose deliberation struck; typed `blob-url-mint-failed`
  throw is the resolved-only contract.
- F4: 02-02 Task 3 verify block adds full-suite `npm test` after focused
  test runs.
- A27 strict-mode (Plan 02-04): REQUIRES both URLs in meta.urls; FAILS
  on length < 2.

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

manifest.json

@@ -7,6 +7,7 @@
   "permissions": [
     "desktopCapture",
     "activeTab",
+    "tabs",
     "downloads",
     "scripting",
     "storage",
@@ -47,4 +48,4 @@
     "48": "icons/icon48.png",
     "128": "icons/icon128.png"
   }
-}
+}