chore: scaffold, CI, and the export bundle verbatim

The export bundle is the input to this port, not a sketch: the curriculum,
the tutor prompt and the five logic modules are finished and tested. They
land here byte-identical and stay that way.

  diff -r export/data data && diff -r export/lib lib
  diff -r export/prompt prompt && diff export/validate.mjs validate.mjs

data/, lib/, prompt/ and validate.mjs sit at the repo root so validate.mjs
runs verbatim with no path edits. All four are excluded from lint and
formatting — they are not ours to restyle. Types for lib/ live alongside in
types/ rather than as sibling .d.ts files, so the verbatim check stays a
plain directory diff.

CI runs the curriculum gate first, before anything else can pass:

  node validate.mjs   PASS — 0 blocking, 0 advisory

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,24 @@
+# the export bundle is the input to this port, not part of it
+export/
+*.tar.gz
+
+# manually-vendored dictionary sources (see tools/dict/README.md)
+vendor/
+
+node_modules/
+dist/
+.vite/
+coverage/
+
+# Capacitor / Android build output — the project itself is committed.
+# assets/public is a copy of dist/, regenerated by `npx cap sync`.
+app/android/build/
+app/android/app/build/
+app/android/.gradle/
+app/android/local.properties
+app/android/app/src/main/assets/public/
+app/android/app/src/main/assets/capacitor.config.json
+app/android/capacitor-cordova-android-plugins/
+
+.DS_Store
+*.log