refactor(#89): Address PR comments

src/routes/api/export-integrations/[provider]/+server.ts

@@ -26,6 +26,9 @@ export const PUT = async (event: RequestEvent) => {
 		const patch: Record<string, unknown> = {};
 		if (body.folderId !== undefined) patch.folderId = body.folderId;
 		if (body.path !== undefined) patch.path = body.path;
+		if (Object.keys(patch).length === 0) {
+			return json({ error: 'No fields to update' }, { status: 400 });
+		}
 
 		const { data, error } = await event.locals.supabase
 			.from('pokedex_export_integrations')

src/routes/api/integrations/dropbox/connect/+server.ts

@@ -31,7 +31,10 @@ export const GET = async (event: RequestEvent) => {
 	const env = getEnv();
 	const clientId = env.DROPBOX_OAUTH_CLIENT_ID;
 	if (!clientId) {
-		throw redirect(302, `/pokedex/${pokedexId}?export=dropbox-missing-client`);
+		const missingClientRedirect = pokedexId
+			? `/pokedex/${pokedexId}?export=dropbox-missing-client`
+			: '/pokedex?export=dropbox-missing-client';
+		throw redirect(302, missingClientRedirect);
 	}
 
 	const state = createOAuthState();

src/routes/api/integrations/google-drive/callback/+server.ts

@@ -89,16 +89,21 @@ export const GET = async (event: RequestEvent) => {
 		const fileName = oauthState.fileName?.trim() ? oauthState.fileName : null;
 		const folderId = oauthState.folderId?.trim() ? oauthState.folderId : null;
 
-		await repo.upsert({
-			provider: 'google_drive',
-			enabled: true,
-			fileName,
-			folderId,
-			accessToken: tokenData.access_token,
-			refreshToken: tokenData.refresh_token ?? null,
-			accessTokenExpiresAt: expiresAt,
-			metadata: tokenData.scope ? { scope: tokenData.scope } : null
-		});
+		try {
+			await repo.upsert({
+				provider: 'google_drive',
+				enabled: true,
+				fileName,
+				folderId,
+				accessToken: tokenData.access_token,
+				refreshToken: tokenData.refresh_token ?? null,
+				accessTokenExpiresAt: expiresAt,
+				metadata: tokenData.scope ? { scope: tokenData.scope } : null
+			});
+		} catch (saveError) {
+			console.error('Google Drive integration save failed:', saveError);
+			throw redirect(302, `${returnTo}-error`);
+		}
 
 		throw redirect(302, `${returnTo}-connected`);
 	} catch (err) {

src/routes/api/integrations/google-drive/connect/+server.ts

@@ -31,7 +31,10 @@ export const GET = async (event: RequestEvent) => {
 	const env = getEnv();
 	const clientId = env.GOOGLE_OAUTH_CLIENT_ID;
 	if (!clientId) {
-		throw redirect(302, `/pokedex/${pokedexId}?export=google-missing-client`);
+		const missingClientRedirect = pokedexId
+			? `/pokedex/${pokedexId}?export=google-missing-client`
+			: '/pokedex?export=google-missing-client';
+		throw redirect(302, missingClientRedirect);
 	}
 
 	const state = createOAuthState();