feat: add license activation system with feature gates

- License key generator tool at ~/Desktop/LicenseGenerator
- Backend validator route (GET /api/license/status, POST /api/license/activate)
- Activation page in sidebar with status, key input, and free/premium feature list
- useLicense hook for frontend license state
- Feature gates: premium eligibility buttons (DDMA, DeltaIns, Tufts, United, CCA) disabled without license
- Feature gates: premium claim buttons (CCA, Delta MA, United, Tufts) and all PreAuth buttons disabled without license
- Free features always active: MassHealth eligibility/claim, Documents, Payments, Backups, Reports
- README: license key generator usage instructions

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

apps/Frontend/src/components/claims/claim-form.tsx

@@ -93,6 +93,7 @@ interface ClaimFormProps {
   onHandleForUnitedDHSeleniumClaim: (data: ClaimFormData) => void;
   onHandleForTuftsSCOSeleniumClaim: (data: ClaimFormData) => void;
   onClose: () => void;
+  isLicensed?: boolean;
 }
 
 export function ClaimForm({
@@ -111,6 +112,7 @@ export function ClaimForm({
   onHandleForTuftsSCOSeleniumClaim,
   onSubmit,
   onClose,
+  isLicensed = false,
 }: ClaimFormProps) {
   const { toast } = useToast();
   const { user } = useAuth();
@@ -2196,24 +2198,32 @@ export function ClaimForm({
                       <Button
                         className="w-32 bg-blue-600 hover:bg-blue-700 text-white"
                         onClick={() => runWithPriceCheck(handleCCAClaim)}
+                        disabled={!isLicensed}
+                        title={!isLicensed ? "License required" : undefined}
                       >
                         CCA Claim
                       </Button>
                       <Button
                         className="w-36 bg-violet-600 hover:bg-violet-700 text-white"
                         onClick={() => runWithPriceCheck(handleDDMAClaim)}
+                        disabled={!isLicensed}
+                        title={!isLicensed ? "License required" : undefined}
                       >
                         Delta MA Claim
                       </Button>
                       <Button
                         className="w-44 bg-orange-600 hover:bg-orange-700 text-white"
                         onClick={() => runWithPriceCheck(handleUnitedDHClaim)}
+                        disabled={!isLicensed}
+                        title={!isLicensed ? "License required" : undefined}
                       >
                         United/DentalHub Claim
                       </Button>
                       <Button
                         className="w-32 bg-teal-600 hover:bg-teal-700 text-white"
                         onClick={() => runWithPriceCheck(handleTuftsSCOClaim)}
+                        disabled={!isLicensed}
+                        title={!isLicensed ? "License required" : undefined}
                       >
                         Tufts Claim
                       </Button>
@@ -2723,24 +2733,32 @@ export function ClaimForm({
                     <Button
                       className="w-32 bg-blue-600 hover:bg-blue-700 text-white"
                       onClick={() => handleMHPreAuth()}
+                      disabled={!isLicensed}
+                      title={!isLicensed ? "License required" : undefined}
                     >
                       MH PreAuth
                     </Button>
                     <Button
                       className="w-32 bg-blue-600 hover:bg-blue-700 text-white"
                       onClick={handleCCAPreAuth}
+                      disabled={!isLicensed}
+                      title={!isLicensed ? "License required" : undefined}
                     >
                       CCA PreAuth
                     </Button>
                     <Button
                       className="w-44"
                       variant="secondary"
+                      disabled={!isLicensed}
+                      title={!isLicensed ? "License required" : undefined}
                     >
                       United/DentalHub PreAuth
                     </Button>
                     <Button
                       className="w-32"
                       variant="secondary"
+                      disabled={!isLicensed}
+                      title={!isLicensed ? "License required" : undefined}
                     >
                       Tufts PreAuth
                     </Button>

apps/Frontend/src/components/layout/sidebar.tsx

@@ -186,6 +186,12 @@ export function Sidebar() {
           },
         ],
       },
+      {
+        name: "Activation",
+        path: "/activation",
+        icon: <KeyRound className="h-5 w-5 text-amber-500" />,
+        adminOnly: true,
+      },
       {
         name: "Database Management",
         path: "/database-management",