The mobile suite drives a real browser against a WebServer started from
TypeScript source, so fastify-static serves join(__dirname, 'public') =
src/web/public — not dist/web/public, where `npm run build` puts the vendor
bundles. Every /vendor/xterm* request 404s, so `Terminal` is never defined,
initTerminal() never runs, and any test touching app.terminal dies with
"Cannot read properties of null".
Measured in one worktree, toggling only the vendor files:
before: 404s=5 Terminal=undefined app.terminal=null 8 failed | 26 passed
after: 404s=0 Terminal=function app.terminal=live 6 failed | 28 passed
The 6 remaining failures are genuine pre-existing bugs (stale layout and
accessory-bar expectations, a CJK timeout) and are left alone here.
This went unnoticed because config/vitest.ci.config.ts excludes test/mobile/**,
so CI never ran the suite. `npm run test:mobile` now runs it, with a pretest
hook that builds the bundles.
The asset list was derived from the actual 404s rather than from build.mjs —
which is how xterm-addon-unicode11 and xterm-zerolag-input got included; reading
the build file alone would have missed both. Outputs go to the gitignored
src/web/public/vendor/, so they stay build artifacts. The script is idempotent
(skips outputs newer than their source) and does not touch the normal build.
Full CI suite unchanged: 4368 passed.
