feat: email verification, merchant/store password reset, seed gap fix

- Add EmailVerificationToken and UserPasswordResetToken models with migration
- Add email verification flow: verify-email page route, resend-verification API
- Block login for unverified users (EmailNotVerifiedException in auth_service)
- Add forgot-password/reset-password endpoints for merchant and store auth
- Add "Forgot Password?" links to merchant and store login pages
- Send welcome email with verification link on merchant creation
- Seed email_verification and merchant_password_reset email templates
- Fix db-reset Makefile to run all init-prod seed scripts
- Add UserAuthService to satisfy architecture validation rules
- Add 52 new tests (unit + integration) with full coverage

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

app/modules/tenancy/static/store/js/login.js

@@ -158,6 +158,35 @@ function storeLogin() {
             }
         },
 
+        // Forgot password state
+        showForgotPassword: false,
+        forgotPasswordEmail: '',
+        forgotPasswordLoading: false,
+
+        async handleForgotPassword() {
+            storeLoginLog.info('=== FORGOT PASSWORD ATTEMPT ===');
+            if (!this.forgotPasswordEmail.trim()) {
+                this.error = 'Email is required';
+                return;
+            }
+
+            this.forgotPasswordLoading = true;
+            this.clearErrors();
+
+            try {
+                await apiClient.post('/store/auth/forgot-password', {
+                    email: this.forgotPasswordEmail.trim()
+                });
+                this.success = 'If an account exists with this email, a password reset link has been sent.';
+                this.forgotPasswordEmail = '';
+            } catch (error) {
+                window.LogConfig.logError(error, 'ForgotPassword');
+                this.error = error.message || 'Failed to send reset email. Please try again.';
+            } finally {
+                this.forgotPasswordLoading = false;
+            }
+        },
+
         clearErrors() {
             storeLoginLog.debug('Clearing form errors');
             this.error = '';