feat(usage): wire force flag through client + usage route

Manual refresh (↻) sends ?force=1 so it bypasses the Claude quota cache (dedup + TTL) added in cd4003bc. Auto-refresh and multi-tab stays cached, so Anthropic's usage endpoint is no longer hammered.

Co-Authored-By: Claude <noreply@anthropic.com>

src/app/api/usage/[connectionId]/route.js

@@ -123,6 +123,7 @@ export async function GET(request, { params }) {
   let connection;
   try {
     const { connectionId } = await params;
+    const force = new URL(request.url).searchParams.get("force") === "1";
 
 
     // Get connection from database
@@ -168,7 +169,7 @@ export async function GET(request, { params }) {
     }
 
     // Fetch usage from provider API
-    let usage = await getUsageForProvider(connection, proxyOptions);
+    let usage = await getUsageForProvider(connection, proxyOptions, { force });
 
     // If provider returned an auth-expired message instead of throwing,
     // force-refresh token and retry once (OAuth only)
@@ -176,7 +177,7 @@ export async function GET(request, { params }) {
       try {
         const retryResult = await refreshAndUpdateCredentials(connection, true, proxyOptions);
         connection = retryResult.connection;
-        usage = await getUsageForProvider(connection, proxyOptions);
+        usage = await getUsageForProvider(connection, proxyOptions, { force });
       } catch (retryError) {
         console.warn(`[Usage] ${connection.provider}: force refresh failed: ${retryError.message}`);
       }