The whole runtime work this week is one slice (19.x) with one goal: make `.app` and `.appdev` the *one source of truth* for shipping a Linux app. A `.app` should drag-anywhere, double-click, and run on Ubuntu, Fedora, KDE, GNOME — with the same Aqua chrome, same animations, same Apple-style consent UI as it would on a full CopyCatOS session.
19.A wired the launcher skeleton and the per-app host-theme contract — a bundle ships pure Aqua by default, and a user can opt that single app into the host DE's tint via a standard View menu item. 19.B carved out the shared chrome rendering primitives into a library both the menubar daemon and the launcher's foreign-distro chrome stub can link. 19.C wired the meson target and the manifest reader. 19.E (today) made single-file `.app` mounts real: read trailer, squashfuse mount, cross-check bundle id against the manifest, register a `.desktop` entry under `~/.local/share/applications/` so KDE/GNOME taskbars group the chrome stub plus app under one entry. 19.F (also today) wired the 4-tier theme precedence resolver — per-app prefs win over manifest override, which wins over the global config, which falls back to pure Aqua.
What's deferred: the full chrome stub paint flow (19.D — large, needs a mini-MoonRock IPC server inside the launcher), the XSettings/portal probe to actually render Breeze/Adwaita tints (19.F-γ), and the parallel work on AuraFarm (the catalog at copycatos.com) and Aura Farm Code (the local developer brain CLI + GUI). Those are next.
The goal of 19 is one sentence I keep on a sticky note: *double- click a .app on Ubuntu and get a working Aqua window.* Everything else flows from that.