feat: wire Tufts SCO to DentaQuest portal and fix insurance credential dropdown

- Add /dentaquest-eligibility endpoint in Python agent (Tufts SCO uses providers.dentaquest.com)
- Add backend route, processor, and service client for Tufts SCO (separate from UnitedSCO/DentalHub)
- Fix Tufts SCO button to post to new tuftssco route instead of unitedsco
- Fix credential field names: dentaquestUsername/Password (was tuftsscoUsername/Password)
- Fix socket event: listen for selenium:dentaquest_session_started (was unitedsco)
- Fix error visibility: keep session alive 30s on error so backend reads real message
- Replace free-text Site Key field with dropdown to prevent key mismatches

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/SeleniumService/agent.py

@@ -13,12 +13,14 @@ import time
 import helpers_ddma_eligibility as hddma
 import helpers_deltains_eligibility as hdeltains
 import helpers_unitedsco_eligibility as hunitedsco
+import helpers_dentaquest_eligibility as hdentaquest
 import helpers_cca_eligibility as hcca
 
 # Import startup session-clear functions
 from ddma_browser_manager import clear_ddma_session_on_startup
 from deltains_browser_manager import clear_deltains_session_on_startup
 from unitedsco_browser_manager import clear_unitedsco_session_on_startup
+from dentaquest_browser_manager import clear_dentaquest_session_on_startup
 from cca_browser_manager import clear_cca_session_on_startup
 
 from dotenv import load_dotenv
@@ -31,6 +33,7 @@ print("=" * 50)
 clear_ddma_session_on_startup()
 clear_deltains_session_on_startup()
 clear_unitedsco_session_on_startup()
+clear_dentaquest_session_on_startup()
 clear_cca_session_on_startup()
 print("=" * 50)
 print("SESSION CLEAR COMPLETE")
@@ -341,6 +344,47 @@ async def unitedsco_eligibility(request: Request):
     return {"status": "started", "session_id": sid}
 
 
+async def _dentaquest_worker_wrapper(sid: str, data: dict, url: str):
+    """Background worker for DentaQuest (Tufts SCO) — acquires semaphore, updates counters."""
+    global active_jobs, waiting_jobs
+    async with semaphore:
+        async with lock:
+            waiting_jobs -= 1
+            active_jobs += 1
+        try:
+            await hdentaquest.start_dentaquest_run(sid, data, url)
+        finally:
+            async with lock:
+                active_jobs -= 1
+
+
+@app.post("/dentaquest-eligibility")
+async def dentaquest_eligibility(request: Request):
+    """
+    Starts a DentaQuest (Tufts SCO) eligibility session in the background.
+    Body: { "data": { ... } }
+    Returns: { status: "started", session_id: "<uuid>" }
+    """
+    global waiting_jobs
+
+    body = await request.json()
+    data = body.get("data", {})
+
+    sid = hdentaquest.make_session_entry()
+    hdentaquest.sessions[sid]["type"] = "dentaquest_eligibility"
+    hdentaquest.sessions[sid]["last_activity"] = time.time()
+
+    async with lock:
+        waiting_jobs += 1
+
+    asyncio.create_task(_dentaquest_worker_wrapper(
+        sid, data,
+        url="https://providers.dentaquest.com/"
+    ))
+
+    return {"status": "started", "session_id": sid}
+
+
 async def _cca_worker_wrapper(sid: str, data: dict, url: str):
     """Background worker for CCA — acquires semaphore, updates counters. No OTP."""
     global active_jobs, waiting_jobs
@@ -401,6 +445,8 @@ async def submit_otp(request: Request):
         res = hdeltains.submit_otp(sid, otp)
     elif sid in hunitedsco.sessions:
         res = hunitedsco.submit_otp(sid, otp)
+    elif sid in hdentaquest.sessions:
+        res = hdentaquest.submit_otp(sid, otp)
     else:
         raise HTTPException(status_code=404, detail="session not found")
 
@@ -418,6 +464,8 @@ async def session_status(sid: str):
         s = hdeltains.get_session_status(sid)
     elif sid in hunitedsco.sessions:
         s = hunitedsco.get_session_status(sid)
+    elif sid in hdentaquest.sessions:
+        s = hdentaquest.get_session_status(sid)
     elif sid in hcca.sessions:
         s = hcca.get_session_status(sid)
     else: