docs(handoff): record Options A + F closures, refresh Resume prompt menu

Two post-v0.21.0 options closed today; "Since the v0.21.0 cut"
section now narrates both:

- A — App icon (`3eb3a26` + `716a025`). Runtime Window::icon
  wired via WinitWindows on desktop, 9-size PNG hierarchy at
  assets/icon/. The follow-up `716a025` wraps NonSend in
  Option<...> to satisfy Bevy 0.18's stricter system-param
  validation.
- F — Accessibility modes (`c5787c6` + `07e0357`). High-
  contrast and reduce-motion settings flags + Settings UI
  toggles + engine wiring. CBM and HC compose; reduce-motion
  forces card slide_secs to 0.

Open punch list refreshed:

- Visual-identity follow-ups: HC and reduce-motion entries
  marked closed with future-scope notes (HC chrome borders,
  reduce-motion splash gating).
- Carried forward from v0.19.0: App icon entry marked closed
  with future-scope note for .ico/.icns bundle formats (need
  new deps + matter only at packaging time).

Resume prompt menu trimmed: A and F decision options now
marked closed inline (preserved for audit-trail readability).
B, C, D, E remain live.

No runtime / test changes — pure docs hygiene to keep the
handoff orientation accurate as work flows.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

SESSION_HANDOFF.md

@@ -36,9 +36,40 @@ resume.
 
 ## Since the v0.21.0 cut
 
-No threads in flight. Working tree clean as of 2026-05-08. New
-work since the cut would land here as commit narratives; for the
-v0.21.0 contents themselves, see `CHANGELOG.md` § [0.21.0].
+Two Resume-prompt options closed post-tag (2026-05-08):
+
+- **Option A — App icon round** (`3eb3a26` + `716a025`). 9-size
+  PNG hierarchy in `assets/icon/` (16/24/32/48/64/128/256/512/
+  1024 px), generated by a new `icon_generator` example from a
+  shared `icon_svg` builder (Terminal `▌RS` mark on dark
+  `#151515` with brick-red accent). Runtime `Window::icon`
+  wired via `WinitWindows` on desktop only (Android draws its
+  launcher icon from the APK manifest). The follow-up fix
+  `716a025` wraps `NonSend<WinitWindows>` in `Option<...>`
+  to satisfy Bevy 0.18's stricter system-param validation —
+  the resource doesn't exist on the first few frames before
+  winit's `Resumed` event fires. New deps (target-gated
+  non-Android): direct `winit = "0.30"` for `Icon`
+  construction, direct `tiny-skia` for PNG → RGBA decode.
+  Pin test `icon_svg_pin` guards future rasteriser drift.
+- **Option F — Accessibility modes** (`c5787c6` + `07e0357`).
+  High-contrast and reduce-motion settings flags wired through
+  the engine and surfaced as Settings panel toggles. HC boosts
+  `RED_SUIT_COLOUR` to `#ff8aa0` and `BLACK_SUIT_COLOUR` to
+  `#f5f5f5` for card text rendering; reduce-motion forces
+  `effective_slide_secs` to 0 regardless of `AnimSpeed`. CBM
+  and HC compose: lime CBM wins on red when both are on; HC
+  still applies to black suits when both are on. Six new
+  tests pin the truth tables. UI toggles sit alongside the
+  Color-blind row in Settings → Cosmetic; tab-walk visits
+  all three accessibility flags in one vertical run.
+
+Three Resume-prompt options remain live: B (APK launch
+verification), C (replay-overlay extensions), D (Toast
+Warning/Error wiring), E (Phase 8 sync). The visible-payoff
+pieces of the post-v0.21.0 menu have shipped; what's left is
+Android runtime work, replay-overlay polish, sync infrastructure,
+and toast-event sourcing.
 
 ## Open punch list
 
@@ -86,24 +117,30 @@ palette refresh all shipped in v0.20.0 + v0.21.0. What stays open:
   for `Warning` (gold) and `Error` (pink) but no in-engine
   event uses them yet. Wire when a warning- or error-flavoured
   toast event materialises.
-- **High-contrast accessibility mode.** `design-system.md` line
-  274 mentions it (boost foreground from `#d0d0d0` to `#f5f5f5`,
-  suit-red from `#fb9fb1` to `#ff8aa0`). Not implemented; no
-  Settings toggle.
-- **Reduced-motion mode** for card lift / drop transitions.
-  `design-system.md` accessibility item, separate from
-  artwork. Not implemented.
+- *High-contrast accessibility mode — closed 2026-05-08 by
+  `c5787c6` + `07e0357`.* Card text rendering picks up
+  `TEXT_PRIMARY_HC` (`#f5f5f5`) and `RED_SUIT_COLOUR_HC`
+  (`#ff8aa0`); Settings panel has a toggle. Future scope:
+  extend HC through chrome borders (`BORDER_SUBTLE_HC` already
+  defined, not yet consumed), buttons, popover edges.
+- *Reduced-motion mode — closed 2026-05-08 by the same pair.*
+  `effective_slide_secs` forces 0 when on, regardless of the
+  `AnimSpeed` setting. Future scope: gate splash scanline
+  overlay + cursor pulse animation on the same flag, gate
+  warning-chip pulse, gate any future card-lift z-bump
+  animation.
 
 ### Carried forward from v0.19.0
 
-- **App icon round.** `Window::icon` not yet wired; no
-  `.icns` / `.ico` / Linux hicolor PNG hierarchy. The 11-size
-  icon export the v0.19 handoff referenced is *not* currently
-  in `artwork/` (current `artwork/` holds the reverted Rusty
-  Pixel card PNGs and is intentionally untracked); icon-export
-  needs to be re-run before this item can be picked up.
-  Half-day task once the PNGs are back in place. No cert
-  dependency.
+- *App icon round — closed 2026-05-08 by `3eb3a26` + `716a025`.*
+  Runtime `Window::icon` wired (Linux/macOS/Windows); 9-size
+  PNG hierarchy at `assets/icon/icon_<size>.png` covers Linux
+  hicolor + downstream `.icns`/`.ico` packaging needs. The
+  `.ico` and `.icns` bundle-format files themselves are *not*
+  generated — both would need new crate deps (`ico` and
+  `icns` respectively) and only matter at app-bundle time
+  (cargo-bundle / packaging), not at `cargo run`. Open if the
+  project later ships as a packaged macOS / Windows app.
 
 ### Other small candidates
 
@@ -223,16 +260,16 @@ READ FIRST (in order, before doing anything):
                            fresh machine)
 
 DECISION TO ASK THE PLAYER FIRST:
-  A. App icon round — re-run artwork/Icon Export.html (the
-     export PNGs are not currently in `artwork/`), then wire
-     Window::icon + generate .icns / .ico / Linux hicolor PNG
-     hierarchy. Half-day task. No cert dependency. Pure
-     desktop work.
+  A. *Closed 2026-05-08 by `3eb3a26` + `716a025`.* App icon
+     round — runtime `Window::icon` wired plus a 9-size PNG
+     hierarchy at `assets/icon/`. `.ico` / `.icns` bundle
+     formats stay open if the project later ships as a
+     packaged macOS / Windows app.
   B. APK launch verification on AVD / device — `adb install` +
      `adb logcat` to shake out runtime bugs the build / unit
      tests can't catch. Likely surfaces JNI ClipboardManager
      and Android Keystore stubs that need real bridges. Larger
-     scope than A; needs an Android device or emulator running.
+     scope; needs an Android device or emulator running.
   C. Replay-overlay extensions — either the floating `MOVE N/M`
      chip above the focused card (smaller, cross-plugin; needs
      cursor → card-position plumbing in `card_plugin`) or the
@@ -248,9 +285,13 @@ DECISION TO ASK THE PLAYER FIRST:
      wired into Settings. The biggest open arc by scope; rolls
      up several Phase Android dependencies (Keystore,
      ClipboardManager).
-  F. High-contrast and reduced-motion accessibility modes.
-     Both flagged in design-system.md but unimplemented; needs
-     Settings toggles + token alternates.
+  F. *Closed 2026-05-08 by `c5787c6` + `07e0357`.* High-contrast
+     and reduced-motion accessibility modes — Settings flags
+     + UI toggles + engine wiring. Card text rendering uses
+     HC variants when on; card slide_secs forces to 0 when
+     reduce-motion is on. Future scope: extend HC through
+     chrome borders, buttons; gate splash + warning-chip
+     animations on reduce-motion.
 
 WORKFLOW NOTES:
   - Use the system git config (already correct).