BIG pi update with claude chat

pi/.pi/agent/extensions/usage-bars/core.ts

@@ -55,6 +55,8 @@ export interface UsageData {
   /** Unix ms timestamp of when the session window resets (from the raw API response). */
   sessionResetsAt?: number;
   weeklyResetsIn?: string;
+  /** Unix ms timestamp of when the weekly window resets. */
+  weeklyResetsAt?: number;
   extraSpend?: number;
   extraLimit?: number;
   error?: string;
@@ -321,13 +323,34 @@ export function formatResetsAt(isoDate: string, nowMs = Date.now()): string {
   return formatDuration(diffSeconds);
 }
 
+const CLAUDE_CREDENTIALS_FILE = path.join(os.homedir(), ".claude", ".credentials.json");
+
 export function readAuth(authFile = DEFAULT_AUTH_FILE): AuthData | null {
+  let result: AuthData | null = null;
+
+  // Read pi auth.json for non-Claude providers
   try {
     const parsed = JSON.parse(fs.readFileSync(authFile, "utf-8"));
-    return asObject(parsed) as AuthData;
+    result = asObject(parsed) as AuthData;
   } catch {
-    return null;
+    result = {} as AuthData;
   }
+
+  // Read Claude credentials from ~/.claude/.credentials.json
+  try {
+    const claudeRaw = fs.readFileSync(CLAUDE_CREDENTIALS_FILE, "utf-8");
+    const claudeCreds = JSON.parse(claudeRaw);
+    const oauth = claudeCreds?.claudeAiOauth;
+    if (oauth?.accessToken) {
+      result!.anthropic = {
+        access: oauth.accessToken,
+        refresh: oauth.refreshToken,
+        expires: typeof oauth.expiresAt === "number" ? oauth.expiresAt : undefined,
+      };
+    }
+  } catch {}
+
+  return result;
 }
 
 export function writeAuth(auth: AuthData, authFile = DEFAULT_AUTH_FILE): boolean {
@@ -647,6 +670,9 @@ export async function fetchClaudeUsage(token: string, config: RequestConfig = {}
   const sessionResetsAt = data?.five_hour?.resets_at
     ? new Date(data.five_hour.resets_at).getTime()
     : undefined;
+  const weeklyResetsAt = data?.seven_day?.resets_at
+    ? new Date(data.seven_day.resets_at).getTime()
+    : undefined;
 
   const usage: UsageData = {
     session: readPercentCandidate(data?.five_hour?.utilization) ?? 0,
@@ -654,6 +680,7 @@ export async function fetchClaudeUsage(token: string, config: RequestConfig = {}
     sessionResetsIn: data?.five_hour?.resets_at ? formatResetsAt(data.five_hour.resets_at) : undefined,
     sessionResetsAt: Number.isFinite(sessionResetsAt) ? sessionResetsAt : undefined,
     weeklyResetsIn: data?.seven_day?.resets_at ? formatResetsAt(data.seven_day.resets_at) : undefined,
+    weeklyResetsAt: Number.isFinite(weeklyResetsAt) ? weeklyResetsAt : undefined,
   };
 
   if (data?.extra_usage?.is_enabled) {