fix(OSS/TOP): OSS is normative root, not a tenant/legal entity

- LEGAL_ENTITY.v7g.json: OSS reframed as normative root (kind: normative_root,
  parent: null, legalForm removed). Maintainer block added pointing to GCC
  (GitCover Commons gUG) as the legal entity maintaining the root. GCC's real
  company repos live on git.gitcover.de (not public .org).
- others.json: tenant key -> root; legal_form null; maintained_by -> GCC.
- README.md / README.en.md / dictionaries/README.md: "OSS-Tenant" ->
  "OSS (normative Root)" throughout; OSS clarified as no-parent normative root
  maintained by GCC, not a legal entity.
- Spec (GITCOVER_PROTOCOL) and GCP.Questionnaire ADR-003 references updated
  in their respective working trees.

Co-Authored-By: Claude <noreply@anthropic.com>

.gitcover/LEGAL_ENTITY.v7g.json

@@ -1,24 +1,30 @@
 {
   "$schema": "https://gitcover.org/schemas/legal-entity-1.0.json",
   "version": "1.0.0",
-  "tenant": {
+  "root": {
     "shortCode": "OSS",
     "uuidV7": "0197a0a0-0000-7000-8000-000000000000",
-    "registeredName": "GitCover OSS Commons (Open-Source-Inhaltspflege)",
-    "legalForm": "gUG",
-    "lifecycle": "REGISTERED",
-    "capitalState": "PAID",
+    "name": "GitCover OSS — normative Root (Namespace)",
+    "kind": "normative_root",
+    "parent": null,
+    "note": "OSS ist kein Tenant im üblichen Sinn und keine juristische Einheit, sondern die normative Root der GitCover-Hierarchie (kein Parent). Übernimmt alle funktionalen Elemente (Tools/Module/Features) und die zentralen Registries. Gehostet als Gitea-Org auf git.gitcover.org.",
+    "lifecycle": "ACTIVE",
     "maturityLevel": 0,
     "flags": 0,
     "jurisdictionPrimary": "DE",
     "jurisdictionsAdditional": ["EU"],
     "regulatoryScopes": ["GOBD", "AO", "GDPR"],
-    "tax": { "taxId": null, "vatId": null },
-    "tradeRegister": { "registerNumber": null, "registerCourt": null, "notaryDeedNumber": null, "notaryDate": null, "registryStatus": "NOT_FILED" },
-    "address": { "street": null, "houseNumber": null, "postalCode": null, "city": null, "region": null, "country": "DE" },
+    "address": { "country": "DE" },
     "contact": { "email": null, "phone": null },
-    "legacyStatus": "PLANNED"
+    "legacyStatus": "CURRENT"
   },
-  "purpose": "Zentrale normative V7GUID-Dictionary-Heimat (SSoT) fuer GitCover; OSS-Inhaltspflege; mit GCC abzustimmen (§52 AO: Wissenschaft/Bildung/Verbraucherschutz).",
+  "maintainedBy": {
+    "shortCode": "GCC",
+    "registeredName": "GitCover Commons gUG (haftungsbeschränkt)",
+    "legalForm": "gUG",
+    "role": "maintainer_legal_entity",
+    "note": "Die juristische Einheit, die den OSS-Normative-Root pflegt. Echte Firmen-Repos von GCC liegen nicht public auf git.gitcover.de."
+  },
+  "purpose": "Normative Root-Heimat (SSoT) für GitCover: zentrale V7GUID-Dictionaries (kinds.json, status_flags.json) und funktional-root-Elemente für alle GitCover-Lösungen. Mit GCC abzustimmen.",
   "createdUtc": "2026-07-19T00:00:00.000Z"
 }