refactor(windows-host): move CCD/HDR display helpers to a neutral module — F1 complete (audit §9)

Moved the remaining 6 SudoVDA reach-in helpers + SavedConfig (resolve_gdi_name, set_advanced_color, advanced_color_enabled, set_active_mode, isolate/restore_displays_ccd) verbatim from vdisplay::sudovda into a backend-neutral crate::win_display module (the plan's windows/display_ccd.rs). The capturers (idd_push/dxgi/wgc), pf_vdisplay, and punktfunk1 now depend on these as PEERS via crate::win_display instead of reaching into the SudoVDA backend.

With win_adapter (F1 pt1), all 7 reach-in helpers are now neutral — the circular reach-in is broken, so SudoVDA can eventually be deleted (Goal 2) without losing the display utilities. sudovda re-exports the ones it still uses internally; its now-unused CCD/GDI imports were removed.

Verified: host clippy (nvenc) clean on the RTX box; Linux check clean (the new modules are #[cfg(windows)]).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

crates/punktfunk-host/src/punktfunk1.rs

@@ -2661,7 +2661,7 @@ fn virtual_stream_relay(
         #[cfg(target_os = "windows")]
         if bit_depth >= 10 {
             unsafe {
-                if crate::vdisplay::sudovda::set_advanced_color(target.target_id, true) {
+                if crate::win_display::set_advanced_color(target.target_id, true) {
                     // Let the colorspace change settle before WGC creates its capture item / detects HDR.
                     std::thread::sleep(std::time::Duration::from_millis(250));
                 }
@@ -2884,7 +2884,7 @@ fn virtual_stream_relay(
                 // open DDA in HDR (FP16 DuplicateOutput1 → BT.2020 PQ Main10); the normal-desktop DDA
                 // overlay/flip issues that drove us to WGC don't apply to the composed Winlogon UI.
                 let hdr =
-                    unsafe { crate::vdisplay::sudovda::advanced_color_enabled(target.target_id) };
+                    unsafe { crate::win_display::advanced_color_enabled(target.target_id) };
                 dda = None; // reopen to capture the secure desktop
                 match open_dda(&target, cur_mode.width, cur_mode.height, effective_hz, hdr) {
                     Ok(mut p) => {