Fix ESLint error: remove unused compressionError variable

Removed unused catch parameter to fix TypeScript/ESLint build error.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

Author: sallyom

components/frontend/src/app/api/projects/[name]/agentic-sessions/[sessionName]/workspace/upload/route.ts

@@ -124,7 +124,7 @@ export async function POST(
       if (isImageFile(contentType)) {
         try {
           fileBuffer = await compressImageIfNeeded(fileBuffer, contentType, maxSize);
-        } catch (compressionError) {
+        } catch {
           return new Response(
             JSON.stringify({
               error: `Image too large and could not be compressed. Please reduce image size and try again.`
@@ -228,7 +228,7 @@ export async function POST(
       if (isImageFile(contentType)) {
         try {
           fileBuffer = await compressImageIfNeeded(fileBuffer, contentType, maxSize);
-        } catch (compressionError) {
+        } catch {
           return new Response(
             JSON.stringify({
               error: `Image too large and could not be compressed. Please reduce image size and try again.`