Prepare Frame Control 0.2.0 for public testing

- Without the maintainer's key, Android compatibility reports stay on the
  Mac and the UI says so; the shared database is never contacted.
- Remove personal infrastructure details from scripts and docs: the Drive
  folder and gog wrapper now come from the environment, and the Chromium
  build host is required instead of defaulted.
- Add an MIT license, tester instructions in the README, and bump to 0.2.0.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

scripts/build-chromium-xr.sh

@@ -1,7 +1,7 @@
 #!/bin/bash
 # Linux-side (x64 host): cross-compile arm64 Chromium with the Linux OpenXR CLs
 # (8441736 + 8132979, bug 506004811) so WebXR immersive-vr works on the Frame.
-# Needs ~90 GB free, no sudo. Takes hours; run it detached, e.g. on buildhost:
+# Needs ~90 GB free, no sudo. Takes hours; run it detached on the build host:
 #   scp scripts/build-chromium-xr.sh buildhost:chromium-xr/build.sh
 #   ssh buildhost 'cd ~/chromium-xr && tmux new -d -s chromium-xr "./build.sh > build.log 2>&1"'
 # Progress: ~/chromium-xr/stage. Output: ~/chromium-xr/chromium-xr-arm64.tar.xz,

scripts/chromium-xr.sh

@@ -8,13 +8,13 @@
 # Flatpak, so SteamVR's sockets and the XR sandbox work unmodified).
 #
 # Usage:
-#   scripts/chromium-xr.sh install [TARBALL]  # default: fetch from $BUILD_HOST
+#   scripts/chromium-xr.sh install [TARBALL]  # default: scp from $BUILD_HOST
 #   scripts/chromium-xr.sh launch [URL]       # opens in the headset desktop
 #   scripts/chromium-xr.sh check              # isSessionSupported via DevTools
 set -euo pipefail
 
 FRAME_ALIAS=${FRAME_ALIAS:-frame}
-BUILD_HOST=${BUILD_HOST:-buildhost}
+BUILD_HOST=${BUILD_HOST:-}
 BUILD_TARBALL=${BUILD_TARBALL:-chromium-xr/chromium-xr-arm64.tar.xz}
 DEVTOOLS_PORT=${DEVTOOLS_PORT:-9223}
 here=${0:A:h}
@@ -23,6 +23,7 @@ case "${1:-}" in
   install)
     tarball=${2:-}
     if [[ -z "$tarball" ]]; then
+      [[ -n "$BUILD_HOST" ]] || { print -u2 "Pass a tarball, or set BUILD_HOST to the build machine"; exit 2; }
       tmp=$(mktemp -d)
       trap 'rm -rf "$tmp"' EXIT
       tarball=$tmp/chromium-xr-arm64.tar.xz

scripts/compat-db-backup.sh

@@ -4,9 +4,9 @@
 #
 # Exports every report through the app's own key (ui/frame_compat_db.py), keeps
 # dated copies in ~/Library/Application Support/Frame Control/compat-db/backups (newest
-# 60), and uploads to Google Drive (the backup folder) when
-# the data changed since the last upload. Run daily by the LaunchAgent
-# frame-compat-backup (see docs/apks.md).
+# 60), and uploads to the Google Drive folder DRIVE_FOLDER_ID when the data
+# changed since the last upload. Maintainer-only: it needs the database key.
+# Run it daily from a LaunchAgent (see compat-db/README.md).
 #
 # Usage: scripts/compat-db-backup.sh [--no-upload] [--force-upload] [--accept-shrink]
 # Env:   DRIVE_FOLDER_ID, GOG_WRAPPER
@@ -14,8 +14,8 @@ set -euo pipefail
 
 ROOT="${0:A:h}/.."
 DEST="$HOME/Library/Application Support/Frame Control/compat-db/backups"
-DRIVE_FOLDER_ID=${DRIVE_FOLDER_ID:-<drive-folder-id>}
-GOG_WRAPPER=${GOG_WRAPPER:-$HOME/bin/gog-with-keyring.sh}
+DRIVE_FOLDER_ID=${DRIVE_FOLDER_ID:-}
+GOG_WRAPPER=${GOG_WRAPPER:-$(command -v gog || true)}
 upload=1 force=0 accept_shrink=0
 for arg in "$@"; do
   case "$arg" in
@@ -60,9 +60,10 @@ if (( upload )); then
     print "==> Unchanged since the last Drive upload; skipped"
     exit 0
   fi
-  [[ -x "$GOG_WRAPPER" ]] || { print -u2 "gog wrapper not found at $GOG_WRAPPER"; exit 1; }
+  [[ -n "$DRIVE_FOLDER_ID" ]] || { print -u2 "Set DRIVE_FOLDER_ID, or pass --no-upload"; exit 1; }
+  [[ -n "$GOG_WRAPPER" && -x "$GOG_WRAPPER" ]] || { print -u2 "gog not found; install it or set GOG_WRAPPER"; exit 1; }
   "$GOG_WRAPPER" drive upload "$out" --parent "$DRIVE_FOLDER_ID" --json --no-input >/dev/null
   "$GOG_WRAPPER" drive upload "$out.sha256" --parent "$DRIVE_FOLDER_ID" --json --no-input >/dev/null
   print -r -- "$digest" > "$last"
-  print "==> Uploaded to Google Drive (the backup folder)"
+  print "==> Uploaded to Google Drive"
 fi