fix: build image libraries for baseline VPS CPUs

Replace the SIMD-dependent WebAssembly fallback with source-built libvips and Sharp. Pin the libvips archive checksum, use baseline x86-64 compiler flags, retain the native binding and runtime libraries, and check JPEG/PNG/WebP processing before compilation and in the runtime image.

Lint, type checking, and content/security tests passed. Full Docker verification was stopped at the user request; production build and baseline CPU runtime verification remain pending.

package.json

@@ -16,7 +16,6 @@
     "maintenance": "tsx --env-file-if-exists=.env scripts/maintenance.ts"
   },
   "dependencies": {
-    "@img/sharp-wasm32": "0.35.4",
     "better-auth": "^1.7.5",
     "better-sqlite3": "^13.0.3",
     "drizzle-orm": "^0.45.2",
@@ -41,6 +40,8 @@
     "esbuild": "^0.28.2",
     "eslint": "^9.39.5",
     "eslint-config-next": "^16.3.4",
+    "node-addon-api": "8.9.2",
+    "node-gyp": "12.4.0",
     "tsx": "^4.23.13",
     "typescript": "^5.7.3"
   },