feat: add Deltains claim submission flow

Adds a full "Deltains Claim" button next to Delta MA Claim, mirroring
the DDMA claim flow across frontend, backend queue/routes, and a new
Selenium worker. Reuses the existing Deltains eligibility login/OTP
code and was iteratively wired against the live portal (patient roster
search, per-service-line fields, tooth number/surface selects, review
and submit). Also fixes chatbot/insurance-alias carrier recognition so
"deltains" resolves correctly instead of falling back to MassHealth.

apps/SeleniumService/agent.py

@@ -23,6 +23,7 @@ import helpers_cca_eligibility as hcca
 import helpers_cca_claim as hcca_claim
 import helpers_cca_preauth as hcca_preauth
 import helpers_ddma_claim as hddma_claim
+import helpers_deltains_claim as hdeltains_claim
 import helpers_uniteddh_claim as huniteddh_claim
 import helpers_uniteddh_preauth as huniteddh_preauth
 import helpers_tuftssco_claim as htuftssco_claim
@@ -749,6 +750,48 @@ async def ddma_claim(request: Request):
     return {"status": "started", "session_id": sid}
 
 
+async def _deltains_claim_worker_wrapper(sid: str, data: dict, url: str):
+    """Background worker for Deltains claim submission."""
+    global active_jobs, waiting_jobs
+    async with semaphore:
+        async with lock:
+            waiting_jobs -= 1
+            active_jobs += 1
+        try:
+            await hdeltains_claim.start_deltains_claim_run(sid, data, url)
+        finally:
+            async with lock:
+                active_jobs -= 1
+
+
+@app.post("/deltains-claim")
+async def deltains_claim(request: Request):
+    """
+    Starts a Deltains claim submission session in the background.
+    Logs in, searches patient, opens the member's eligibility/benefits page,
+    finds the claim-submission entry point, fills service lines, and submits.
+    Body: { "claim": { "deltainsUsername": "...", "deltainsPassword": "...", ... } }
+    Returns: { status: "started", session_id: "<uuid>" }
+    """
+    global waiting_jobs
+
+    body = await request.json()
+
+    sid = hdeltains_claim.make_session_entry()
+    hdeltains_claim.sessions[sid]["type"] = "deltains_claim"
+    hdeltains_claim.sessions[sid]["last_activity"] = time.time()
+
+    async with lock:
+        waiting_jobs += 1
+
+    asyncio.create_task(_deltains_claim_worker_wrapper(
+        sid, body,
+        url="https://www.deltadentalins.com/ciam/login?TARGET=%2Fprovider-tools%2Fv2"
+    ))
+
+    return {"status": "started", "session_id": sid}
+
+
 async def _uniteddh_claim_worker_wrapper(sid: str, data: dict, url: str):
     """Background worker for United/DentalHub claim submission."""
     global active_jobs, waiting_jobs
@@ -1025,6 +1068,8 @@ async def submit_otp(request: Request):
         res = hdentaquest.submit_otp(sid, otp)
     elif sid in hddma_claim.sessions:
         res = hddma_claim.submit_otp(sid, otp)
+    elif sid in hdeltains_claim.sessions:
+        res = hdeltains_claim.submit_otp(sid, otp)
     elif sid in huniteddh_claim.sessions:
         res = huniteddh_claim.submit_otp(sid, otp)
     elif sid in huniteddh_preauth.sessions:
@@ -1066,6 +1111,8 @@ async def session_status(sid: str):
         s = hcca_preauth.get_session_status(sid)
     elif sid in hddma_claim.sessions:
         s = hddma_claim.get_session_status(sid)
+    elif sid in hdeltains_claim.sessions:
+        s = hdeltains_claim.get_session_status(sid)
     elif sid in huniteddh_claim.sessions:
         s = huniteddh_claim.get_session_status(sid)
     elif sid in huniteddh_preauth.sessions: