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feat: BROWSE_NO_AUTOSTART prevents sidebar from spawning headless browser

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When set, the browse CLI refuses to start a new server and exits with
a clear error: "Server not available, run /open-gstack-browser to restart."
The sidebar agent sets this so users never get an invisible headless
browser when the headed one is closed.
This commit is contained in:
Garry Tan
2026-04-02 19:32:17 -07:00
parent 256a72a378
commit 1bc02585aa
2 changed files with 15 additions and 3 deletions
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7
browse/src/sidebar-agent.ts
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@@ -242,9 +242,12 @@ async function askClaude(queueEntry: any): Promise<void> {
env: {
...process.env,
BROWSE_STATE_FILE: stateFile || '',
// Connect to the existing headed browse server instead of launching a new one.
// Without this, the child claude starts a headless browser on a random port.
// Connect to the existing headed browse server, never start a new one.
// BROWSE_PORT tells the CLI which port to check.
// BROWSE_NO_AUTOSTART prevents spawning an invisible headless browser
// if the headed server is down — fail fast with a clear error instead.
BROWSE_PORT: process.env.BROWSE_PORT || '34567',
BROWSE_NO_AUTOSTART: '1',
// Pin this agent to its tab — prevents cross-tab interference
// when multiple agents run simultaneously
BROWSE_TAB: String(tid),