Campaign CC gate round 1. The Config Resolution dropdown now offers
DisplayModeCatalog.WindowedResolutions — the curated hardware modes
UNIONed with the static modern-ladder sizes that fit the desktop —
because a windowed pick is a plain Size write needing no video mode,
and remote/RDP virtual displays advertise almost none (the live RDP
display exposed exactly 1920x1080 + the 2056x1290 desktop, leaving the
dropdown with nothing below 1920). The fullscreen apply still validates
against the hardware Resolutions list plus the switcher's
monitor-mode-list hard guard, so a fullscreen pick of a windowed-only
entry refuses safely (log-and-stay, #388/#392) — IA-22's
offered-implies-supported invariant narrows to the fullscreen half and
its register row carries the amendment. Three new pure-union tests
including the exact live RDP shape.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
User-directed (2026-08-13): "we should only support modern resolutions.
Not any old format." New DisplayModeCatalog enumerates the window's
monitor (Silk IMonitor.GetAllVideoModes) once at GameWindow load and
curates via a pure, tested rule: modern widescreen families only
(16:9/16:10/21:9/32:9 within 2.5%), at least 1280 wide, must fit the
desktop (an impossible windowed pick is not offered - the measured
3840x2160-on-2560x1440 silent clamp class), desktop mode always
included, refresh-rate duplicates collapsed, ascending order.
The Config Resolution row consumes the catalog through two new optional
Bind parameters; its Defaults value becomes the desktop's own mode.
Fixture/headless callers keep the static preset ladder, which now drops
800x600 and is pinned by test to pass the same curation rule (the OP6 S4
"default must be re-selectable" invariant holds on both paths).
Deliberate retail deviation, register row IA-22: retail listed the
adapter's complete enumeration including 4:3 legacy modes and authored
800x600 as the Config default (gmConfigUI::InitOptions
SetDefaultValue(0x03200258); gmClient::Init @0x004047af). The catalog is
also the designated fullscreen mode-switch validation source for
#376/#388 - an offered mode is supported by construction.
Tests: DisplayModeCatalogTests (8 - filter/clamp/dedupe/sort/ultrawide/
desktop-inclusion/fallback-consistency); ConfigOptionsPageControllerTests
row-12 default updated. App suite 4,961/3 skips; UI.Abstractions 916.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
