VS Code extension: hardcoded 3000ms shell-integration wait causes ~5s delay clicking extension icon

Environment

• macOS 15.x (darwin-arm64), VS Code stable
• Claude Code extension anthropic.claude-code@2.1.111
• zsh with working shell integration (OSC 633 markers confirmed, blue gutter decorations visible)
• Setting claudeCode.useTerminal: true

Repro

1. Click the Claude Code icon in the VS Code activity bar
2. A terminal opens
3. ~5 seconds pass before claude is typed into the terminal

Root cause

Reading extension.js in the packaged extension, the openTerminal path creates a terminal and awaits a promise with
a hardcoded 3000ms fallback:

  await new Promise((resolve) => {
    onDidChangeTerminalShellIntegration((event) => {
      if (event.terminal === term) {
        onDidStartTerminalShellExecution((exec) => {
          if (exec.terminal === term) resolve();
        });
        event.shellIntegration.executeCommand("claude");
      }
    });
    setTimeout(() => {
      if (!term.shellIntegration) { term.sendText("claude"); resolve(); }
    }, 3000);
  });

With the happy path, the promise resolves on onDidStartTerminalShellExecution — which only fires after
executeCommand runs, adding real delay on top of extension activation.

Verified locally:

• time zsh -i -c exit → 350ms
• time claude --version → 50ms
• Python ext venv auto-activation disabled
• direnv output silenced — no interference with integration markers
• Still ~5s from click to claude being typed

Request

Please either:

1. Make the 3000ms timeout configurable (claudeCode.shellIntegrationTimeoutMs), or
2. Short-circuit: if terminal.shellIntegration is already present after createTerminal, call executeCommand

immediately without waiting for the event.

claudeCode.useTerminal: false (webview) is a workaround but many some users (me) prefer the terminal path.