fix(clipboard): route terminal copy through main process for Wayland (port of upstream #55)

main.js

@@ -1,5 +1,5 @@
-const { app, BrowserWindow, dialog, ipcMain, Menu, screen, shell } = require('electron');
+const { app, BrowserWindow, clipboard, dialog, ipcMain, Menu, screen, shell } = require('electron');
 const { Worker } = require('worker_threads');
 const { execFile } = require('child_process');
 const path = require('path');
 const fs = require('fs');
@@ -16,7 +16,7 @@
 }
 
 // getFolderIndexMtimeMs moved to session-cache.js
 const { startMcpServer, shutdownMcpServer, shutdownAll: shutdownAllMcp, resolvePendingDiff, rekeyMcpServer, cleanStaleLockFiles } = require('./mcp-bridge');
 const { fetchAndTransformUsage } = require('./claude-auth');
 log.transports.file.level = app.isPackaged ? 'info' : 'debug';
 log.transports.console.level = app.isPackaged ? 'info' : 'debug';
@@ -36,7 +36,7 @@
 );
 
 // Shell profiles → shell-profiles.js
 const { discoverShellProfiles, getShellProfiles, resolveShell, isWindows, isWslShell, windowsToWslPath, shellArgs } = require('./shell-profiles');
 const { startScheduler } = require('./schedule-runner');
 const { encodeProjectPath } = require('./encode-project-path');
 
@@ -73,7 +73,7 @@
   getMeta, getAllMeta, toggleStar, setName, setArchived,
   isCachePopulated, getAllCached, getCachedByFolder, getCachedByParent, getCachedFolder, getCachedSession, upsertCachedSessions,
   deleteCachedSession, deleteCachedFolder,
   getFolderMeta, getAllFolderMeta, setFolderMeta,
   upsertSearchEntries, updateSearchTitle, deleteSearchSession, deleteSearchFolder, deleteSearchType,
   searchByType, isSearchIndexPopulated, searchFtsRecreated,
   getSetting, setSetting, deleteSetting,
@@ -289,8 +289,8 @@
     setFolderMeta, getAllFolderMeta, getAllMeta, getAllCached, getSetting, getMeta, setName,
   },
 });
 const { readSessionFile, readFolderFromFilesystem, refreshFolder, populateCacheFromFilesystem,
         buildProjectsFromCache, notifyRendererProjectsChanged, sendStatus, populateCacheViaWorker } = sessionCache;
 const { resolveJsonlPath } = require('./read-session-file');
 
 
@@ -471,6 +471,14 @@
   if (/^https?:\/\//i.test(url)) return shell.openExternal(url);
 });
 
+// --- IPC: clipboard write ---
+// The renderer's navigator.clipboard.writeText is gated on focus/user-activation and
+// is flaky-to-dead on Linux/Wayland (Ozone). The main-process clipboard has no such
+// strings attached, so all terminal copies go through here.
+ipcMain.handle('clipboard-write-text', (_event, text) => {
+  if (typeof text === 'string') clipboard.writeText(text);
+});
+
 // --- IPC: MCP bridge ---
 ipcMain.on('mcp-diff-response', (_event, sessionId, diffId, action, editedContent) => {
   resolvePendingDiff(sessionId, diffId, action, editedContent);
@@ -1297,7 +1305,7 @@
   // WSL profiles only work for plain terminals — Claude CLI sessions need the
   // Windows shell because session data lives on the Windows filesystem.
   const requestedProfile = resolveShell(effectiveProfileId);
   const useWslProfile = isWslShell(requestedProfile.path) && isPlainTerminal;
   const shellProfile = (isWslShell(requestedProfile.path) && !isPlainTerminal)
     ? resolveShell('auto')
     : requestedProfile;

preload.js

@@ -47,6 +47,7 @@ contextBridge.exposeInMainWorld('api', {
   deleteWorktree: (worktreePath) => ipcRenderer.invoke('delete-worktree', worktreePath),
   worktreeStatus: (worktreePath) => ipcRenderer.invoke('worktree-status', worktreePath),
   openExternal: (url) => ipcRenderer.invoke('open-external', url),
+  writeClipboard: (text) => ipcRenderer.invoke('clipboard-write-text', text),
 
   // Send (fire-and-forget)
   sendInput: (id, data) => ipcRenderer.send('terminal-input', id, data),

public/terminal-manager.js

@@ -63,7 +63,7 @@ function setupTerminalKeyBindings(terminal, container, getSessionId, { onFind }
     if (!isMac && e.key === 'c' && e.ctrlKey && !e.shiftKey && !e.altKey && !e.metaKey) {
       if (terminal.hasSelection()) {
         if (e.type === 'keydown') {
-          navigator.clipboard.writeText(terminal.getSelection()).catch(() => {});
+          window.api.writeClipboard(terminal.getSelection());
         }
         return false;
       }
@@ -191,6 +191,24 @@ function createTerminalEntry(session) {
     },
   });
 
+  // OSC 52 — let the program inside the terminal set the system clipboard (this is how
+  // Claude Code copies). xterm doesn't wire this up itself, so we do. Payload is
+  // "<selection>;<base64>" (or "<selection>;?" for a read-back query, which we ignore).
+  // Route through the main process — see writeClipboard — because the renderer clipboard
+  // is unreliable on Wayland.
+  terminal.parser.registerOscHandler(52, (payload) => {
+    const sep = payload.indexOf(';');
+    const b64 = sep === -1 ? payload : payload.slice(sep + 1);
+    if (!b64 || b64 === '?') return true;
+    try {
+      const bytes = Uint8Array.from(atob(b64), (ch) => ch.charCodeAt(0));
+      window.api.writeClipboard(new TextDecoder().decode(bytes));
+    } catch {
+      return false;
+    }
+    return true;
+  });
+
   const fitAddon = new FitAddon.FitAddon();
   terminal.loadAddon(fitAddon);
   terminal.loadAddon(new WebLinksAddon.WebLinksAddon((_event, url) => {