feat: add telephony layer and asterisk-events worker

- packages/telephony: cliente AMI proprio sobre TCP puro (sem dependencia
  de terceiros pouco mantida) + interface TelephonyProvider +
  AsteriskTelephonyProvider (Originate, Hangup, QueuePause/Add/Remove,
  QueueStatus, ExtensionState, DeviceState, PJSIPShowEndpoints/Contacts,
  Reload, runCommand, stream de eventos). Testado contra o Asterisk real —
  o formato de resposta do Command mudou entre versoes do Asterisk
  (headers 'Output:' repetidos em vez de 'Response: Follows'/'--END
  COMMAND--'), corrigido apos inspecionar os bytes crus do protocolo
- apps/asterisk-events: worker dedicado a manter a conexao AMI viva,
  normalizar eventos (Newchannel, DialBegin/End, Hangup, DeviceStateChange,
  ContactStatus, eventos de fila/agente), persistir ExtensionState no
  Postgres e publicar em Redis pub/sub para consumo em tempo real.
  Containerizado, alcanca o Asterisk (host network) via
  host.docker.internal a partir da rede bridge. Heartbeat no Redis para
  health check
- packages/database: novos modelos Trunk, Extension, ExtensionState
  (migration aplicada)
- packages/shared: secret-crypto.ts (AES-256-GCM para credenciais de trunk
  e senha SIP em repouso, master key externa ao banco)

Testado ponta a ponta: chamada real originada -> eventos normalizados
recebidos via Redis SUBSCRIBE, heartbeat renovando no TTL correto.

pnpm-lock.yaml

@@ -153,6 +153,31 @@ importers:
         specifier: ^8.20.0
         version: 8.68.0(eslint@9.39.5(jiti@2.7.0)(supports-color@8.1.1))(supports-color@8.1.1)(typescript@5.9.3)
 
+  apps/asterisk-events:
+    dependencies:
+      '@b2bcall/database':
+        specifier: workspace:*
+        version: link:../../packages/database
+      '@b2bcall/telephony':
+        specifier: workspace:*
+        version: link:../../packages/telephony
+      ioredis:
+        specifier: ^5.4.2
+        version: 5.11.1(supports-color@8.1.1)
+      pino:
+        specifier: ^9.6.0
+        version: 9.14.0
+    devDependencies:
+      '@types/node':
+        specifier: ^24.0.0
+        version: 24.13.3
+      ts-node:
+        specifier: ^10.9.2
+        version: 10.9.2(@types/node@24.13.3)(typescript@5.9.3)
+      typescript:
+        specifier: ^5.7.3
+        version: 5.9.3
+
   packages/database:
     dependencies:
       '@prisma/client':
@@ -184,6 +209,15 @@ importers:
         specifier: ^5.7.3
         version: 5.9.3
 
+  packages/telephony:
+    devDependencies:
+      '@types/node':
+        specifier: ^24.0.0
+        version: 24.13.3
+      typescript:
+        specifier: ^5.7.3
+        version: 5.9.3
+
 packages:
 
   '@angular-devkit/core@19.2.24':