fix+feat: morning QA fixes, worklist pagination, misc sidecar improvements

- caller-resolution: drop cache, use indexed phone filter (lead.contactPhone.primaryPhoneNumber.like)
- worklist: externalize page size (WORKLIST_PAGE_SIZE × WORKLIST_MAX_PAGES), paginate getMissedCalls/getAssignedLeads/getPendingFollowUps
- maint: unlock-agent, force-ready, backfill-caller-resolution, clear-analysis-cache, fix-timestamps
- ozonetel agent.service: force logout+re-login on "already logged in"
- ai chat: context expansion
- livekit-agent: updates
- widget: session handling
- masterdata: clinic list cache

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

src/masterdata/masterdata.service.ts

@@ -171,6 +171,18 @@ export class MasterdataService implements OnModuleInit {
 
         await this.cache.setCache(cacheKey, JSON.stringify(slots), CACHE_TTL);
         this.logger.log(`Generated ${slots.length} slots for doctor ${doctorId} on ${dayOfWeek}`);
+
+        // Filter out past time slots when the requested date is today (IST).
+        // Cache stores the full day's slots — filtering happens post-cache
+        // so slots become available as the day progresses without cache churn.
+        const todayIST = new Date().toLocaleDateString('en-CA', { timeZone: 'Asia/Kolkata' });
+        if (date === todayIST) {
+            const nowHHMM = new Date().toLocaleTimeString('en-GB', { timeZone: 'Asia/Kolkata', hour: '2-digit', minute: '2-digit' });
+            const filtered = slots.filter(s => s.time >= nowHHMM);
+            this.logger.log(`[SLOTS] Today filter: ${slots.length} total → ${filtered.length} remaining (now=${nowHHMM} IST)`);
+            return filtered;
+        }
+
         return slots;
     }