feat: add support for JXL, Camera RAW, ICO, TGA, PSD, EXR, HDR image formats

Extends the platform to handle 7 new image format families alongside
the existing AVIF support gap-fill. Uses the established HEIC decoder
pattern (CLI decode → PNG → Sharp) for formats Sharp can't handle
natively: Camera RAW via dcraw_emu/LibRaw, PSD/TGA/EXR/HDR via
ImageMagick. JXL and ICO are Sharp-native. Adds server-side preview
for non-browser-displayable formats and JXL as a new convert output
target. All 27 validateImageBuffer callers updated with filename for
extension-based format detection.

apps/api/src/routes/tools/edit-metadata.ts

@@ -138,7 +138,7 @@ export function registerEditMetadata(app: FastifyInstance) {
       return reply.status(400).send({ error: "No image file provided" });
     }
 
-    const validation = await validateImageBuffer(fileBuffer);
+    const validation = await validateImageBuffer(fileBuffer, filename);
     if (!validation.valid) {
       return reply.status(400).send({ error: `Invalid image: ${validation.reason}` });
     }