claude in the PTY now has continuous tab-aware context. Three pieces:
1. Live state files. background.js listens to chrome.tabs.onActivated /
onCreated / onRemoved / onUpdated (throttled to URL/title/status==
complete so loading spinners don't spam) and pushes a snapshot. The
sidepanel relays it as a custom event; sidepanel-terminal.js sends
{type:"tabState"} text frames over the live PTY WebSocket.
terminal-agent.ts writes:
<stateDir>/tabs.json all open tabs (id, url, title, active,
pinned, audible, windowId)
<stateDir>/active-tab.json current active tab (skips chrome:// and
chrome-extension:// internal pages)
Atomic write via tmp + rename so claude never reads a half-written
document. A fresh snapshot is pushed on WS open so the files exist by
the time claude finishes booting.
2. New $B tab-each <command> [args...] meta-command. Fans out a single
command across every open tab, returns
{command, args, total, results: [{tabId, url, title, status, output}]}.
Skips chrome:// pages; restores the originally active tab in a finally
block (so a mid-batch error doesn't leave the user looking at a
different tab); uses bringToFront: false so the OS window doesn't
jump on every fanout. Scope-checks the inner command BEFORE the loop.
3. --append-system-prompt hint at spawn time. Claude is told about both
the state files and the $B tab-each command up front, so it doesn't
have to discover the surface by trial. Passed via the --append-system-
prompt CLI flag, NOT as a leading PTY write — the hint stays out of
the visible transcript.
Tests:
- browse/test/tab-each.test.ts (new) — registration + source-level
invariants (scope check before loop, finally-restore, bringToFront:false,
chrome:// skip) + behavior tests with a mock BrowserManager that verify
iteration order, JSON shape, error handling, and active-tab restore.
- browse/test/terminal-agent.test.ts — three new assertions for
tabState handler shape, atomic-write pattern, and the
--append-system-prompt wiring at spawn.
Verified live: opened 5 tabs, ran $B tab-each url against the live
server, got per-tab JSON results back, original active tab restored
without OS focus stealing.
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