style: apply prettier across the tree

One-shot prettier pass so the new format:check gate starts from a clean
baseline. Formatting only — no behaviour change. Generator-owned and
vendored artifacts stay untouched via .prettierignore.

src/app/api/import/csv/__tests__/route.test.ts

@@ -174,9 +174,7 @@ describe("POST /api/import/csv — write loop + per-row envelope", () => {
     );
 
     const res = await POST(
-      csvRequest(
-        [HEADER, "WEIGHT,80.5,kg,2026-05-01T08:00:00Z,,,"].join("\n"),
-      ),
+      csvRequest([HEADER, "WEIGHT,80.5,kg,2026-05-01T08:00:00Z,,,"].join("\n")),
     );
     const body = (await res.json()) as CsvEnvelope;
     expect(body.data?.inserted).toBe(0);

src/app/api/import/csv/route.ts

@@ -125,7 +125,8 @@ export const POST = apiHandler(async (request: NextRequest) => {
               unit: m.unit,
               measuredAt: m.measuredAt,
               notes: m.notes ?? null,
-              glucoseContext: (m.glucoseContext as GlucoseContext | undefined) ?? null,
+              glucoseContext:
+                (m.glucoseContext as GlucoseContext | undefined) ?? null,
             },
             create: {
               userId,
@@ -136,7 +137,8 @@ export const POST = apiHandler(async (request: NextRequest) => {
               externalId: m.externalId,
               measuredAt: m.measuredAt,
               notes: m.notes ?? null,
-              glucoseContext: (m.glucoseContext as GlucoseContext | undefined) ?? null,
+              glucoseContext:
+                (m.glucoseContext as GlucoseContext | undefined) ?? null,
             },
             select: { createdAt: true, updatedAt: true },
           });
@@ -159,7 +161,8 @@ export const POST = apiHandler(async (request: NextRequest) => {
               source: "IMPORT",
               measuredAt: m.measuredAt,
               notes: m.notes ?? null,
-              glucoseContext: (m.glucoseContext as GlucoseContext | undefined) ?? null,
+              glucoseContext:
+                (m.glucoseContext as GlucoseContext | undefined) ?? null,
             },
           });
           inserted++;
@@ -232,7 +235,11 @@ export const POST = apiHandler(async (request: NextRequest) => {
       }
       const outcome = writeOutcome.get(r.line);
       if (outcome === "duplicate") {
-        return { line: r.line, status: "skipped" as const, reason: "duplicate" };
+        return {
+          line: r.line,
+          status: "skipped" as const,
+          reason: "duplicate",
+        };
       }
       if (outcome === "updated") {
         return { line: r.line, status: "updated" as const };