feat(bitdefender): complete Companies module (build-out 2/N)

- Completed Companies module for bitdefender GravityZone Public API
- Implemented: getCompanyDetails, getCompanyDetailsByUser, createCompany, suspendCompany, activateCompany, deleteCompany
- Discovered updateCompany and getCompaniesList not available; companies retrieved via network inventory
- Company types: 0=Partner, 1=Customer; createCompany accepts nested licenseSubscription via JSON passthrough
- All write operations require --confirm; raw also restricts createCompany/suspendCompany/activateCompany
- selftest 49 -> 55 passing

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

.claude/skills/bitdefender/scripts/gz_client.py

@@ -254,6 +254,61 @@ class GravityZoneClient:
     def get_own_company(self) -> dict:
         return self._jsonrpc_request("companies", "getCompanyDetails", {}) or {}
 
+    def get_company_details(self, company_id: Optional[str] = None) -> dict:
+        """Company detail (companies.getCompanyDetails). No id ⇒ own company."""
+        params: dict = {}
+        if company_id:
+            params["companyId"] = company_id
+        return self._jsonrpc_request("companies", "getCompanyDetails", params) or {}
+
+    def get_company_by_user(self, username: str) -> dict:
+        """Company that owns a given user (companies.getCompanyDetailsByUser)."""
+        return self._jsonrpc_request(
+            "companies", "getCompanyDetailsByUser", {"username": username}
+        ) or {}
+
+    def create_company(
+        self,
+        company_type: int,
+        name: str,
+        parent_id: Optional[str] = None,
+        extra: Optional[dict] = None,
+    ) -> Any:
+        """Create a company (companies.createCompany). STATE-CHANGING.
+
+        Required (verified): `type` (0=Partner, 1=Customer) and `name`. Documented
+        optional params: parentId, address, country, state, phone, industry,
+        canBeManagedByAbove, assignedProductType, and a nested `licenseSubscription`
+        {type (3=monthly subscription, 4=monthly trial), reservedSlots,
+        endSubscription, autoRenewPeriod, ...}. Pass those via `extra`. Gate at
+        the call site behind --confirm.
+        Docs: bitdefender.com/business/support/en/77211-126236-createcompany.html
+        """
+        params: dict = {"type": company_type, "name": name}
+        if parent_id is not None:
+            params["parentId"] = parent_id
+        if extra:
+            params.update(extra)
+        return self._jsonrpc_request("companies", "createCompany", params)
+
+    def suspend_company(self, company_id: str) -> Any:
+        """Suspend a company (companies.suspendCompany). STATE-CHANGING. Gated."""
+        return self._jsonrpc_request(
+            "companies", "suspendCompany", {"companyId": company_id}
+        )
+
+    def activate_company(self, company_id: str) -> Any:
+        """Activate a suspended company (companies.activateCompany). STATE-CHANGING."""
+        return self._jsonrpc_request(
+            "companies", "activateCompany", {"companyId": company_id}
+        )
+
+    def delete_company(self, company_id: str) -> Any:
+        """Delete a company (companies.deleteCompany). STATE-CHANGING. Gated."""
+        return self._jsonrpc_request(
+            "companies", "deleteCompany", {"companyId": company_id}
+        )
+
     def list_companies(self, page: int = 1, per_page: int = 100) -> dict:
         result = self._jsonrpc_request(
             "network",