[eric] browser: Settings "Clear browsing data" wipes the browser partition only

electron/main.js

@@ -2448,6 +2448,14 @@ ipcMain.handle('get-webview-preload-path', () => {
   return `file://${path.join(__dirname, 'webview-preload.js')}`;
 });
 
+// Wipe ONLY the browser-card partition (cookies/cache/localStorage/IndexedDB), never the app's defaultSession. Surfaced as Settings -> Data & Privacy -> Clear browsing data.
+ipcMain.handle('browser:clear-data', async () => {
+  const ses = session.fromPartition(BROWSER_PARTITION);
+  await ses.clearStorageData();
+  await ses.clearCache();
+  return { ok: true };
+});
+
 ipcMain.handle('get-update-status', () => cachedUpdateStatus);
 
 // One-shot recovery info: if the crash-watchdog relaunched us, returns the

electron/preload.js

@@ -57,6 +57,8 @@ contextBridge.exposeInMainWorld('openswarm', {
   getInstallState: () => ipcRenderer.invoke('get-install-state'),
   // Factory reset: wipes the data dir and relaunches. Never resolves on success (the app exits first).
   hardReset: () => ipcRenderer.invoke('hard-reset'),
+  // Clears cookies/cache/localStorage for the browser-card partition only (never the app's defaultSession). Logs you out of sites opened in browser cards.
+  clearBrowserData: () => ipcRenderer.invoke('browser:clear-data'),
   connectSlack: () => ipcRenderer.invoke('connect-slack'),
   sendCdpCommand: (wcId, method, params, sessionId) => ipcRenderer.invoke('send-cdp-command', wcId, method, params, sessionId),
   cdpDetachClean: (wcId) => ipcRenderer.invoke('cdp-detach-clean', wcId),

frontend/src/app/pages/Settings/sections/general/DataPrivacySection.tsx

@@ -20,11 +20,15 @@ const DataPrivacySection: React.FC<{ styles: SettingsStyles }> = ({ styles }) =>
   const [busy, setBusy] = useState(false);
   const [eraseText, setEraseText] = useState('');
   const [err, setErr] = useState<string | null>(null);
+  const [clearOpen, setClearOpen] = useState(false);
+  const [clearedOk, setClearedOk] = useState(false);
 
   const closeAll = () => {
     if (busy) return;
     setResetOpen(false);
     setEraseOpen(false);
+    setClearOpen(false);
+    setClearedOk(false);
     setEraseText('');
     setErr(null);
   };
@@ -59,6 +63,24 @@ const DataPrivacySection: React.FC<{ styles: SettingsStyles }> = ({ styles }) =>
     }
   };
 
+  const doClearBrowser = async () => {
+    const api = window.openswarm;
+    if (!api?.clearBrowserData) {
+      setErr('This only works in the desktop app.');
+      return;
+    }
+    setBusy(true);
+    setErr(null);
+    try {
+      await api.clearBrowserData();
+      setBusy(false);
+      setClearedOk(true);
+    } catch {
+      setBusy(false);
+      setErr("Couldn't clear browsing data just now. Try again in a moment.");
+    }
+  };
+
   const dialogPaperSx = {
     bgcolor: c.bg.surface,
     border: `1px solid ${c.border.subtle}`,
@@ -100,6 +122,14 @@ const DataPrivacySection: React.FC<{ styles: SettingsStyles }> = ({ styles }) =>
         <Button variant="outlined" size="small" onClick={() => { setErr(null); setResetOpen(true); }} sx={rowBtnSx}>Reset</Button>
       </Box>
 
+      <Box sx={{ ...rowSx, borderBottom: `1px solid ${c.border.subtle}` }}>
+        <Box>
+          <Typography sx={labelSx}>Clear browsing data</Typography>
+          <Typography sx={descSx}>Signs you out of sites opened in browser cards and clears their cookies, cache, and local storage. Your chats, apps, and settings stay.</Typography>
+        </Box>
+        <Button variant="outlined" size="small" onClick={() => { setErr(null); setClearedOk(false); setClearOpen(true); }} sx={rowBtnSx}>Clear</Button>
+      </Box>
+
       <Box sx={rowSx}>
         <Box>
           <Typography sx={{ ...labelSx, color: c.status.error }}>Erase all content and settings</Typography>
@@ -120,6 +150,24 @@ const DataPrivacySection: React.FC<{ styles: SettingsStyles }> = ({ styles }) =>
         </Box>
       </Dialog>
 
+      <Dialog open={clearOpen} onClose={closeAll} PaperProps={{ sx: dialogPaperSx }}>
+        <Box sx={{ p: 2.5 }}>
+          <Typography sx={titleSx}>{clearedOk ? 'Browsing data cleared' : 'Clear browsing data?'}</Typography>
+          <Typography sx={bodySx}>{clearedOk ? 'Cookies, cache, and local storage for browser cards are gone. Reload a browser card to see it signed out.' : 'This signs you out of sites in browser cards and clears their cookies, cache, and local storage. Your chats, apps, and settings stay.'}</Typography>
+          {err && <Typography sx={errSx}>{err}</Typography>}
+          <Box sx={actionRowSx}>
+            {clearedOk ? (
+              <Button onClick={closeAll} sx={{ color: c.accent.primary, textTransform: 'none', fontWeight: 600 }}>Done</Button>
+            ) : (
+              <>
+                <Button onClick={closeAll} disabled={busy} sx={cancelSx}>Cancel</Button>
+                <Button onClick={doClearBrowser} disabled={busy} sx={{ color: c.accent.primary, textTransform: 'none', fontWeight: 600 }}>{busy ? 'Clearing…' : 'Clear'}</Button>
+              </>
+            )}
+          </Box>
+        </Box>
+      </Dialog>
+
       <Dialog open={eraseOpen} onClose={closeAll} PaperProps={{ sx: dialogPaperSx }}>
         <Box sx={{ p: 2.5 }}>
           <Typography sx={titleSx}>Erase all content and settings?</Typography>

frontend/src/types/electron.d.ts

@@ -49,6 +49,7 @@ declare global {
     onWebviewNewWindow: (cb: (url: string, webContentsId: number) => void) => () => void;
     openExternal: (url: string) => Promise<void>;
     hardReset?: () => Promise<void>;
+    clearBrowserData?: () => Promise<{ ok: boolean }>;
     onAuthUrl?: (cb: (url: string) => void) => () => void;
     onOauthClaim?: (cb: (url: string) => void) => () => void;
   }