packetdial: build out + document the skill against the live NetSapiens v2 API

Key is now provisioned + live-verified, so grounded the skill in the real spec (RTFM):
- Mapped the OpenAPI surface (v44.4.10, 239 paths / 354 ops) — capability map added to
  SKILL.md (what the platform exposes vs what's wrapped vs raw-only).
- Added 6 live-verified read wrappers (ns.py + ns_client.py): callqueues, timeframes,
  sites, contacts, autoattendants, billing (domain limits/usage).
- Replaced the stale "not yet provisioned" credentials section with the live status
  (vaulted nsr_ reseller key, key-id nsr_hSGUB5Wo, scope Reseller 91912.service, RW) +
  the pbx.packetdial.com vs api.ucaasnetwork.com hostname note + override.
- api.md history updated. Writes remain gated behind --confirm; everything unwrapped
  reachable via `raw`.

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

.claude/skills/packetdial/scripts/ns.py

@@ -97,6 +97,12 @@ def main(argv=None) -> int:
     sp = sub.add_parser("phones", help="phones (devices) in a domain"); sp.add_argument("domain")
     sp = sub.add_parser("dids", help="phone numbers in a domain"); sp.add_argument("domain")
     sp = sub.add_parser("devices", help="devices for a user"); sp.add_argument("domain"); sp.add_argument("user")
+    sp = sub.add_parser("callqueues", help="ACD call queues in a domain"); sp.add_argument("domain")
+    sp = sub.add_parser("timeframes", help="time-based routing schedules in a domain"); sp.add_argument("domain")
+    sp = sub.add_parser("sites", help="multi-site definitions in a domain"); sp.add_argument("domain")
+    sp = sub.add_parser("contacts", help="shared/domain contacts"); sp.add_argument("domain")
+    sp = sub.add_parser("autoattendants", help="auto-attendants (IVR) in a domain"); sp.add_argument("domain")
+    sp = sub.add_parser("billing", help="domain limits + current usage counts"); sp.add_argument("domain")
     sub.add_parser("resellers", help="list resellers")
     sp = sub.add_parser("cdrs", help="call detail records")
     sp.add_argument("--domain"); sp.add_argument("--start"); sp.add_argument("--end")
@@ -138,6 +144,18 @@ def main(argv=None) -> int:
             _emit(client.phonenumbers(args.domain))
         elif args.cmd == "devices":
             _emit(client.devices(args.domain, args.user))
+        elif args.cmd == "callqueues":
+            _emit(client.callqueues(args.domain))
+        elif args.cmd == "timeframes":
+            _emit(client.timeframes(args.domain))
+        elif args.cmd == "sites":
+            _emit(client.sites(args.domain))
+        elif args.cmd == "contacts":
+            _emit(client.contacts(args.domain))
+        elif args.cmd == "autoattendants":
+            _emit(client.autoattendants(args.domain))
+        elif args.cmd == "billing":
+            _emit(client.billing(args.domain))
         elif args.cmd == "resellers":
             _emit(client.resellers())
         elif args.cmd == "cdrs":