feat: add Bitdefender GravityZone integration module

Adds full GravityZone API integration to ClaudeTools. Key additions:

- api/services/gravityzone_service.py: JSON-RPC client with Basic auth,
  methods for company/endpoint/quarantine/licensing data, and security_sweep
  which paginates all endpoints, enriches with malware/agent status, and
  sorts infected > outdated > clean
- api/schemas/gravityzone.py: Pydantic response models for all endpoints
- api/routers/gravityzone.py: 7 REST endpoints at /api/gravityzone/*,
  JWT-protected, returns 502 on downstream GZ errors
- api/config.py: GRAVITYZONE_API_KEY + GRAVITYZONE_API_BASE_URL settings
- api/main.py: router registered under /api/gravityzone

Vault entry: msp-tools/gravityzone.sops.yaml (partner-level key, 14 modules)
Server .env updated, ticktick router synced, service restarted and verified.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api/config.py

@@ -53,6 +53,10 @@ class Settings(BaseSettings):
     GRAPH_SENDER_EMAIL: str = "noreply@azcomputerguru.com"
     ADMIN_NOTIFICATION_EMAIL: str = "mike@azcomputerguru.com"
 
+    # Bitdefender GravityZone
+    GRAVITYZONE_API_KEY: str = ""
+    GRAVITYZONE_API_BASE_URL: str = "https://cloud.gravityzone.bitdefender.com/api/v1.0/jsonrpc"
+
     class Config:
         """Pydantic configuration."""