Files
enricobuehler 22f2686680 feat(vdisplay/windows): the console can finally show the operator's real screens
`GET /display/monitors` returned an empty list on every Windows host, plus a LINUX error string:
`monitors::list` is a per-compositor dispatch whose non-Linux arm bails, and it never even got
that far because `detect()` was not cfg-gated — on Windows it fell through to an
`XDG_CURRENT_DESKTOP` sniff and failed with advice about setting `PUNKTFUNK_COMPOSITOR`, which the
handler puts VERBATIM into the response. So the console showed no physical screen and its only
explanation was Linux troubleshooting (sweep §13.17).

The data was there all along. `target_inventory()` already walks the CCD database; it now also
reports the geometry that walk had in hand — the driving source's position and mode, the GDI
device name, the refresh rational, and `primary`. No second CCD walker.

* `monitors::list_windows()` maps that onto `PhysicalMonitor`. Two fields cannot mean on Windows
  what they mean on Linux and are reported honestly rather than invented: `scale` is always 1.0
  (Windows scaling is per-monitor DPI applied per application, not a compositor-global logical
  scale — so the geometry is PIXELS), and an INACTIVE head gets zeroed geometry because the CCD
  mode indices are only valid for active paths. Inactive heads are still listed, per `list`'s own
  contract, so "why can't I pick it?" keeps an answer.
* `managed` is finally truthful. The doc says only KWin can tell a virtual output from a real head;
  Windows can too, via our own EDID manufacturer id in the device path (21eda37a).
* `detect()` gets an honest non-Linux arm, the operator pin gated with it — naming a Wayland
  compositor on Windows could never be honoured either.
* The handler reports `compositor: "windows"` instead of null-plus-a-Linux-error.

ON GLASS (.173, host 0.21.0, TV attached):

    connector=\\.\DISPLAY1  enabled=true  managed=false  primary=true
    3840x2160 @165Hz  pos=(0,0)  "LG TV SSCR2"

Pinned by an `#[ignore]`d hardware case that asserts at least one NON-managed head is visible —
the exact thing that was missing. Read-only, so it is safe against a live host.

This also gives `capture_monitor` a picker on Windows, where the handler currently hardcodes
`pinned: None`; wiring that is left for the per-monitor-capture work rather than smuggled in here.

Verified on .173: `clippy -p punktfunk-host -p pf-vdisplay -p pf-win-display --all-targets
-- -D warnings` clean; both xcheck targets clean.
2026-07-29 00:18:27 +02:00
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