live: AMI-fed live state, /api/live WebSocket, dashboard and status dots

LiveState loads extension states and registered devices from Asterisk on
every AMI connect and follows ExtensionStatus/ContactStatus; the hub sends
a snapshot then deltas batched every 250 ms (devices for admins only),
pings every 30 s and closes unauthenticated sockets with 4401. The web UI
keeps one reconnecting socket in a zustand store, shows a Reconnecting
banner, a Dashboard (online, on a call, telephony engine) and status dots.

Fix: Asterisk 24 has no 'pjsip reload'; reload with
'module reload res_pjsip.so'. AMI errors now carry the CLI output.

Milestone check, automated: call-test.ts registers two baresip phones and
holds a 30 s call with RTP both ways (pnpm test:asterisk); the recorded
session drives the live-state tests. scripts/e2e/m2-live.mjs runs api +
Asterisk + phones + browser on a private Docker network: a new extension
is live in Asterisk in ~1.3 s, the dashboard shows 2/2 online and red dots
during the call.

Task: M2-T6

apps/api/src/generator/index.ts

@@ -20,7 +20,7 @@ export const HEADER = '; GENERATED BY SelfPhoneNG — DO NOT EDIT. Changes will
 
 /** Generated file → the AMI Command that makes Asterisk load it (03 §3). Order = reload order. */
 export const RELOADS = {
-  'pjsip_selfphoneng.conf': 'pjsip reload',
+  'pjsip_selfphoneng.conf': 'module reload res_pjsip.so',
   'rtp_selfphoneng.conf': 'module reload res_rtp_asterisk.so',
   'extensions_globals_selfphoneng.conf': 'dialplan reload',
   'extensions_selfphoneng.conf': 'dialplan reload',
@@ -161,7 +161,7 @@ export function createGenerator(deps: GeneratorDeps) {
 
       const reloadFor = force ? GENERATED_FILES : r.filesChanged;
       const commands = [...new Set(reloadFor.map((f) => RELOADS[f]))].filter(
-        (c) => !(transportsChanged && c === 'pjsip reload'),
+        (c) => !(transportsChanged && c === 'module reload res_pjsip.so'),
       );
       // TODO(M8): after `queue reload all`, re-send QueuePause for paused members (03 §1 step 9).
       const { sent, error } = await sendReloads(commands);