fix: Resolve build pipeline failures (TS types and NextJS bundle issues)

Author: Ixotic27

app/api/streak/png/route.ts

@@ -35,7 +35,7 @@ export async function GET(request: Request) {
       headers.set('Cache-Control', cacheControl);
     }
 
-    return new NextResponse(pngBuffer, {
+    return new NextResponse(pngBuffer as unknown as BodyInit, {
       status: 200,
       headers,
     });

lib/svg/generator.ts

@@ -4,7 +4,7 @@ import type { BadgeParams, ContributionCalendar, StreakStats, MonthlyStats } fro
 import { getLabels, type BadgeLabels } from '../i18n/badgeLabels';
 import { AUTO_THEME_DARK, AUTO_THEME_LIGHT } from './themes';
 import { TOWER_ANIMATION_CSS } from './animations';
-import { computeTowers, projectIsometric, type TowerData } from './layout';
+import { computeTowers, type TowerData } from './layout';
 import { sanitizeFont, sanitizeHexColor, sanitizeRadius, sanitizeGoogleFontUrl } from './sanitizer';
 
 import { SVG_WIDTH, SVG_HEIGHT, FONT_MAP, isFontKey } from './generatorConstants';

next.config.ts

@@ -3,7 +3,7 @@ import type { NextConfig } from 'next';
 const nextConfig: NextConfig = {
   // Prevent Turbopack from bundling next/og through its shared module context,
   // which causes the "Next.js package not found" HMR panic on dynamic routes.
-  serverExternalPackages: ['next/og'],
+  serverExternalPackages: ['next/og', '@resvg/resvg-js'],
   // Allow the local network IP to access dev resources without cross-origin warnings
   allowedDevOrigins: ['172.31.128.1'],
   devIndicators: false,