The GTK client becomes a relm4 component tree: AppModel owns the window, trust gate (rules 1-3), and the spawned session child's lifecycle as typed messages; the hosts page is a child component with a FactoryVecDeque of host cards — the HostsCallbacks Rc<dyn Fn> bag, the busy Cell, and the Rc<RefCell<HostsUi>> cross-page pokes are gone. Trust/settings/library dialogs stay plain GTK, invoked from update with a ComponentSender. Deleted with the in-process presenter: ui_stream.rs, video_gl.rs, ui_gamepad_library.rs, launch.rs, the khronos-egl dep, and the PUNKTFUNK_LEGACY_PRESENTER hatch. Every stream (and the console library) now runs in punktfunk-session; the shell spawns it for card connects and exec's it for --connect/--browse so the Decky wrapper keeps working. The request-access flow gains --connect-timeout + a CancelHandle that kills the child. Screenshot scenes re-pointed onto the components (verified: hosts + library self-capture; the dialog scenes present correctly and capture under a GL renderer); the gamepad-library scene is gone with the page. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
punktfunk-session
The Vulkan session binary: one stream per invocation in an SDL3 window — no UI toolkit,
no widgets, terminal stats. The power-user / gamescope stream client, and the stage-2
presenter of the Linux client re-architecture (punktfunk-planning:
linux-client-rearchitecture.md).
punktfunk-session --connect host[:port] [--fp HEX] [--launch id] [--fullscreen] [--stats]
punktfunk-session --browse host[:port] [--mgmt PORT] [--fullscreen]
--browse opens the console game library (the Skia coverflow over the animated aurora)
instead of connecting: A launches the focused title as a stream in the same window,
session end returns to the library, B quits (Gaming Mode returns). Paired hosts only —
pairing is the desktop client / Decky plugin's job. PUNKTFUNK_FAKE_LIBRARY=<file.json>
feeds canned entries with no host (portrait paths starting with / load from disk).
Reads the same identity / known-hosts / settings stores as the desktop client
(punktfunk-client) — pair there (or via its headless --pair) first; this binary never
connects to a host it has no pinned fingerprint for (--fp HEX overrides the store).
Stdout is the machine interface: {"ready":true} after the first presented frame,
stats: … once per second (Ctrl+Alt+Shift+S toggles, --stats forces on), one
{"error"|"ended": …} JSON line on the way out. Logs go to stderr. Exit codes: 0
clean end, 2 connect failed, 3 trust rejected / pairing required, 4 presenter
init failed.
In-stream keys match the desktop client: click captures input (Ctrl+Alt+Shift+Q releases), Ctrl+Alt+Shift+D disconnects, F11 toggles fullscreen; the controller escape chord (L1+R1+Start+Select, hold to disconnect) works the same.
The default build carries the Skia console UI (ui feature): the stats OSD and capture
hint render in-window (Ctrl+Alt+Shift+S toggles both the OSD and the stdout mirror).
--no-default-features is the ~5 MB power-user build — same streaming, stats on stdout
only, no Skia anywhere in the dependency tree.
Decode follows the Settings preference: VAAPI frames import zero-copy into Vulkan
(per-plane dmabuf + the stream's CICP-driven CSC shader); boxes whose driver can't
import (NVIDIA proprietary by design) fall back to software decode automatically.
Debug/bisect knobs: PUNKTFUNK_DECODER=software|vaapi, PUNKTFUNK_PRESENT_MODE= mailbox|immediate (default FIFO), PUNKTFUNK_VK_DEVICE=<index> (multi-GPU), and
PUNKTFUNK_HW_FAULT=import (fault every dmabuf import — proves the three-strike
demotion to software on healthy hardware). HDR/P010 and the Skia console UI
(--browse) are later phases of the plan.