ma-browser v0.14.0 — slim core: faster snapshots and clicks, real multi-agent sessions

Slim core line, rebuilt from v0.12.0. The v0.13.0 features (site_freeze,
adapter cache/health, dynamic MCP tools, vault, remote access) are not
included; they remain in the v0.13.0 tag.

Removed

• web control panel, Windows tray app, Pinix Hub provider, OpenClaw backend
• background git pull after every site command and the npm version check

Features

• cli: tab claim [--id] [--shared] [--intent] / tab release for exclusive tabs
• cli: snapshot --highlight draws the numbered ref boxes on request (MCP: highlight: true)
• daemon: idle sessions expire after BB_SESSION_IDLE_HOURS (default 24) and release their leases
• scripts: e2e.mjs (core agent contract in an isolated browser) and bench.mjs

Performance

• snapshot: no overlay by default; a 400-row page went from 15.6s to 2.0s, same output
• click: focus emulation on attach; background-tab clicks went from ~10s to <1s
• daemon: cap Chrome's per-tab network body buffer (10MB/tab, 5MB/response): -155MB Chromium PSS with six API-heavy tabs
• daemon: stop enabling the unused Accessibility domain on every tab

Bug Fixes

• cli: send BB_SESSION_ID/BB_SESSION_LABEL/BB_SESSION_SCOPE, so CLI agents get their own current tab
• click: one click fires the handler once (was mouse click plus element.click())
• tabs: hex short IDs are no longer parseInt-ed, and unknown IDs error instead of falling back to a list index
• site: one adapter catalog/runner shared by CLI, MCP and daemon; site run goes through the daemon's sessions and leases

Verify

node scripts/e2e.mjs      # isolated Chromium + daemon: control, sessions, leases, adapters, cookie persistence
node scripts/bench.mjs    # memory/latency benchmark

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