Base: BD-J Adjustments Blu-ray scaffold

Vendored BD-J SDK, tsMuxeR + local VLC plugins, ffmpeg asset generation,
and a signed BD-J Xlet menu (org.homebrew.MyXlet) authored into a UDF 2.50 ISO.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

README.md

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+# Adjustments Blu-ray
+
+BD-J scaffold for the off-beat dark comedy `Adjustments`.
+
+## Tooling
+
+- `mise` pins Temurin JDK 8 for legacy BD-J bytecode.
+- `vendor/bdj-sdk` contains the BD-J Linux SDK pieces used for signing,
+  template BD-J metadata, stubs, and UDF ISO generation.
+- `tools/tsmuxer/tsMuxeR` authors the generated elementary streams into a
+  Blu-ray playlist, clipinfo, and `.m2ts`.
+- `tools/vlc-plugins` can hold project-local Arch VLC Blu-ray plugins when the
+  system VLC package is split and `vlc-plugin-bluray` is not installed.
+- `ffmpeg` generates the temporary feature clip.
+- `vlc` opens the resulting ISO.
+
+## Commands
+
+```sh
+make bootstrap
+make
+make inspect
+make run
+```
+
+The ISO is written to:
+
+```text
+build/adjustments.iso
+```
+
+`make run` launches VLC through the Blu-ray access module, not as a generic
+media file:
+
+```sh
+vlc bluray:///absolute/path/to/build/adjustments.iso
+```
+
+The initial menu is a Java Xlet overlay with a few bonus-feature placeholders
+and a hidden menu stub. The actual generated video is a short ffmpeg SMPTE bars
+pattern with AC-3 audio, authored as playlist `00000`.