feat: chatbot rendering provider override and NPI provider ordering

- AI chat extracts 'with provider <name>' and routes claim to that provider
- Claim form reads provider from sessionStorage before any async effects run,
  preventing saved claim/procedure data from overriding the chatbot selection
- NPI provider settings table shows Provider #1 / #2 labels with up/down
  reorder buttons; Provider #1 is always the default for claims
- Default provider now uses sortOrder instead of hardcoded 'Mary Scannell'
- Added sortOrder column to NpiProvider schema with migration

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

apps/Backend/src/ai/internal-chat-graph.ts

@@ -22,6 +22,8 @@ export interface ChatClassification {
   dob?: string;               // for eligibility_by_id / check_and_claim (MM/DD/YYYY)
   // --- insurance hint (only if explicitly stated in the message) ---
   insuranceHint?: string;     // raw text, e.g. "masshealth", "BCBS", "CCA"
+  // --- rendering/treating provider (only if explicitly stated, e.g. "with provider Kai Gao") ---
+  renderingProvider?: string; // raw name, e.g. "Kai Gao", "Dr. Smith"
   // --- procedures (raw text, NOT CDT codes — CDT lookup is done in workflow) ---
   procedureNames?: string[];  // for check_and_claim, e.g. ["perio exam", "adult cleaning"]
   // --- scheduling ---
@@ -46,6 +48,7 @@ Respond ONLY with valid JSON (no markdown fences):
   "memberId": "<member/insurance ID if given explicitly or found in history>",
   "dob": "<date of birth in MM/DD/YYYY if given explicitly or found in history>",
   "insuranceHint": "<insurance name only if explicitly stated in the message, e.g. 'masshealth', 'BCBS MA', 'CCA'>",
+  "renderingProvider": "<provider/doctor name only if explicitly stated, e.g. 'Kai Gao', 'Dr. Smith' — omit if not mentioned>",
   "procedureNames": ["<raw procedure name>", ...],
   "appointmentDate": "<YYYY-MM-DD; use today's date (${today}) if user says 'today'; omit only if no date is mentioned at all>",
   "appointmentTime": "<HH:MM 24h if a specific time is mentioned, omit if not stated>",
@@ -104,6 +107,9 @@ Rules:
   e.g. "3 PA (#3, 14, 30)" → ["1 pa, #3", "2nd pa, #14", "2nd pa, #30"]
   e.g. "2 pa #3 #14" → ["1 pa, #3", "2nd pa, #14"]
 - insuranceHint is only set when the user explicitly names an insurance in the message
+- renderingProvider is only set when the user explicitly names a treating/rendering provider or doctor
+  e.g. "with provider Kai Gao", "provider Dr. Smith", "rendered by Kai Gao", "doctor Kai Gao"
+  Extract just the name (without "Dr." prefix unless it's part of the name), omit if not mentioned
 - Keep fallbackReply to 1-2 sentences
 - For navigate intents, fallbackReply = "Opening the [page] page..." (e.g. "Opening the eligibility page...")
 - appointmentDate applies to BOTH schedule_appointment AND claim_only/check_and_claim:

apps/Backend/src/ai/internal-chat-workflow.ts

@@ -594,6 +594,7 @@ async function handleClaimOnly(
       serviceDate,
       appointmentId,
       matchedCodes: matched.map((r) => ({ code: r.code!, description: r.description, toothNumber: r.toothNumber, toothSurface: r.toothSurface })),
+      renderingProvider: c.renderingProvider ?? null,
     },
   };
 }