feat: SSE agent state, UCID fix, maint module, QA bug fixes

- Fix outbound disposition: store UCID from dial API response (root cause of silent disposition failure)
- SSE agent state: real-time Ozonetel state drives status toggle (ready/break/calling/in-call/acw)
- Maint module with OTP-protected endpoints (force-ready, unlock-agent, backfill, fix-timestamps)
- Maint OTP modal with PinInput component, keyboard shortcuts (Ctrl+Shift+R/U/B/T)
- Force-logout via SSE: admin unlock pushes force-logout to connected browsers
- Silence JsSIP debug flood, add structured lifecycle logging ([SIP], [DIAL], [DISPOSE], [AGENT-STATE])
- Centralize date formatting with IST-aware formatters across 11 files
- Fix call history: non-overlapping aggregates (completed/missed), correct timestamp display
- Auto-dismiss CallWidget ended/failed state after 3 seconds
- Remove floating "Helix Phone" idle badge from all pages
- Fix dead code in agent-state endpoint (auto-assign was unreachable after return)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/state/sip-manager.ts

@@ -53,26 +53,24 @@ export function connectSip(config: SIPConfig): void {
             if (state === 'ringing-in' && outboundPending) {
                 outboundPending = false;
                 outboundActive = true;
-                console.log('[SIP] Outbound bridge detected — auto-answering');
+                console.log('[SIP-MGR] Outbound bridge detected — auto-answering');
                 setTimeout(() => {
                     sipClient?.answer();
                     setTimeout(() => stateUpdater?.setCallState('active'), 300);
                 }, 500);
-                // Store UCID even for outbound bridge calls
                 if (ucid) stateUpdater?.setCallUcid(ucid);
                 return;
             }
 
-            // Don't overwrite caller number on outbound calls — it was set by click-to-call
+            console.log(`[SIP-MGR] State: ${state} | caller=${number ?? 'none'} | ucid=${ucid ?? 'none'} | outboundActive=${outboundActive}`);
+
             stateUpdater?.setCallState(state);
             if (!outboundActive && number !== undefined) {
                 stateUpdater?.setCallerNumber(number ?? null);
             }
 
-            // Store UCID if provided
             if (ucid) stateUpdater?.setCallUcid(ucid);
 
-            // Reset outbound flag when call ends
             if (state === 'ended' || state === 'failed') {
                 outboundActive = false;
                 outboundPending = false;
@@ -84,6 +82,7 @@ export function connectSip(config: SIPConfig): void {
 }
 
 export function disconnectSip(): void {
+    console.log('[SIP-MGR] Disconnecting SIP');
     sipClient?.disconnect();
     sipClient = null;
     connected = false;