Only the browser seat runs browsers, and only inside internal/browser-slot.sh.
That rule was remembered, not enforced: an agent ran a gate it took for a
headless source check and it launched Chromium outside the slot.
internal/lib/playwright-guarded.mjs is now the one way a repo file reaches
playwright: its launch(), launchPersistentContext(), launchServer(), connect()
and connectOverCDP() exit 75 (NOT MEASURED) with a message naming
browser-slot.sh unless DOXA_BROWSER_SLOT is set, and browser-slot.sh exports it
for the command it runs, so a bash -c grandchild inherits it. All 72 files that
imported playwright switch to it (internal/lib/browser.mjs and 64 internal gates;
plugin-designs scripts: doxa-research-map 3, my-upg-100-list 2,
research-map-plus-grid 2, research-dashboard 1): a mechanical import swap.
check:browser-gates-guarded (gates:pre) fails a direct import;
bun run browser-gates lists the 97 scripts that launch a browser. isBrowserGate
moves to internal/lib/browser-gates.mjs so the runner and the check share it.
These two maps build `new gl.Map` directly, so they never got useMapInstance's RTL install, and
their bundle entries registered nothing either. The basemap draws each place in its OWN script,
so over the Middle East most labels are Arabic, Persian or Hebrew for EVERY viewer: they were
drawn as disconnected glyphs in the wrong order. installRtlTextPlugin(gl) now runs after the
engine global resolves and before new gl.Map (an entry-time call cannot work once the engine is
injected lazily).
Gate: check:rtl-raw (+ :poison), gospel's check-gospel-rtl-shaping method (pan to Arabia first;
no RTL label on screen is NOT MEASURED; one defineProperty per global for hook + poison) over
cities-internet on both engines and key-cities (Mapbox-only, gated, no leaf: mounted on a
same-origin host page). The shared gate's --leaf argument can replace the cities rows once it
lands; the key-cities host page still needs this one.
Measured: before, cities-internet mapbox 58 RTL labels with the shaper 'unavailable' and maplibre
62 stuck at 'requested', both unshaped; after, shaper 'loaded' on both, and key-cities 56 RTL
labels shaped. Poison: 3/3 rows caught.
