feat(bitdefender): complete Accounts module (build-out 1/N)

- Completed Accounts module for bitdefender skill (GravityZone Public API)
- Added 5 methods: getAccountDetails, createAccount, updateAccount, deleteAccount, configureNotificationsSettings
- Write methods require --confirm; raw also gates createAccount/updateAccount/configureNotificationsSettings
- Param shapes validated against official docs and safe validation probes
- configureNotificationsSettings is a setter with no required param; warning documented against empty payload on live tenant
- selftest 42 -> 49 passing

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

.claude/skills/bitdefender/references/BUILDOUT.md

@@ -68,14 +68,14 @@ Per-module workflow: fetch module doc -> list methods + params -> add to
 - [x] getPushEventSettings · getPushEventStats · setPushEventSettings
 - [ ] sendTestPushEvent (enumerate)
 
-## accounts  (fully enumerated from docs)
+## accounts  — COMPLETE (all 7)
 - [x] getAccountsList
+- [x] getAccountDetails (no id = own account)
 - [x] getNotificationsSettings
-- [ ] getAccountDetails
-- [ ] createAccount (gated)
-- [ ] updateAccount (gated)
-- [ ] deleteAccount (gated)
-- [ ] configureNotificationsSettings (gated)
+- [x] createAccount (gated)
+- [x] updateAccount (gated)
+- [x] deleteAccount (gated)
+- [x] configureNotificationsSettings (gated; setter w/ no required param — never probe empty)
 
 ## integrations
 - [ ] (enumerate; getPSAIntegrationList was a name-miss — find correct names)