feat: applicant.getMyVisaApplications gated by program toggle

Returns the caller's visa application rows when the program's
visaStatusVisibleToMembers toggle is on; returns null when it's off
(so the UI can hide the section entirely); returns an empty array
when the toggle is on but the caller has no needsVisa attendees.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/server/routers/applicant.ts

@@ -2774,4 +2774,53 @@ export const applicantRouter = router({
       editableNow,
     }
   }),
+
+  /**
+   * Returns the caller's visa application rows (one per AttendingMember
+   * the caller owns) when their program has visaStatusVisibleToMembers=true.
+   * Returns null when the toggle is off so the UI can hide the section
+   * entirely. Returns an empty array when the toggle is on but the caller
+   * has no needsVisa attendees yet.
+   */
+  getMyVisaApplications: protectedProcedure.query(async ({ ctx }) => {
+    const attendees = await ctx.prisma.attendingMember.findMany({
+      where: { userId: ctx.user.id },
+      include: {
+        confirmation: {
+          select: {
+            id: true,
+            project: {
+              select: {
+                id: true,
+                programId: true,
+                program: { select: { visaStatusVisibleToMembers: true } },
+              },
+            },
+          },
+        },
+        visaApplication: true,
+      },
+    })
+
+    const visibleAttendees = attendees.filter(
+      (a) => a.confirmation.project.program.visaStatusVisibleToMembers,
+    )
+    if (attendees.length > 0 && visibleAttendees.length === 0) {
+      return null
+    }
+
+    return visibleAttendees
+      .filter((a) => a.visaApplication !== null)
+      .map((a) => ({
+        id: a.visaApplication!.id,
+        attendingMemberId: a.id,
+        status: a.visaApplication!.status,
+        nationality: a.visaApplication!.nationality,
+        invitationSentAt: a.visaApplication!.invitationSentAt,
+        appointmentAt: a.visaApplication!.appointmentAt,
+        decisionAt: a.visaApplication!.decisionAt,
+        notes: a.visaApplication!.notes,
+        projectId: a.confirmation.project.id,
+      }))
+  }),
 })