Chat chrome: one gutter, one radius scale, one even glass recipe

The header and composer were full-bleed bands (flush to the top/right/bottom
viewport edges, composer corners off-screen) next to a rail that floats with a
12px margin. The new --layout-gutter (12px) spaces the rail, header, empty-state
card and composer identically on every side; --radius-panel/-control/-chip
(-pill) replace the ad-hoc radii across the shared classes, so every panel is
rounded on all four corners and shared controls match in every theme. The
desktop-only ::after hairlines and the left-corner-only radius are gone.

Aero: the rail and the chat chrome (answers included) share one even recipe -
the wallpaper extra-blurred into a hue-free wash (background-glass.webp) under a
uniform ~50% white veil and a whisper of gloss. Measured within ~10 RGB units
across the rail top->bottom and the card/composer left->right; the blue->green
smear and the teal composer are gone. The composer's field is a clean even tile
with no wallpaper gradient inside it.

Chat fixes: send is a filled primary tile shaped exactly like attach (dimmed
while the input is empty), suggestion/context chips use the shared .chip token
(40/44px target, visible rim, full-contrast text, raw model id in the tooltip),
the AI note reads at 12px --text-muted (.ai-disclaimer), the selected sidebar
row carries the accent border + accent icon, the theme toggle is back in Aero
(the moon flips to Dark; Settings brings Aero back), and the empty state is
centered exactly between header and composer.

Outside CSS: the wallpaper's top-left HUD-circle decoration (it peeked through
the 12px gutters on wide windows) was healed out of background.webp and
background-blur.webp; the orbs/bubbles ride one masked .ice-floats layer that
fades them under the chrome bands and the rail strip, so none is sliced by a
panel edge (still parked under reduced motion).

Version 0.6.0, SW -> freezmo-v82. Tests: chat suite pins the new geometry (12px
gutter, 24px corners, even wash on all four panels, send-vs-attach shape,
chips/input radii); mobile pins the phone chrome and the Aero toggle; bubbles
pins the floats layer + its reduced-motion opt-out.

components/chat/ModelPicker.tsx

@@ -86,7 +86,7 @@ export function ModelPicker({
           aria-label={t("chat.modelSearch")}
           autoComplete="off"
           spellCheck={false}
-          className="mb-2 w-full rounded-xl border border-[var(--hairline)] bg-[var(--surface-sunken)] px-3 py-2 text-[13px] text-[var(--text)] outline-none placeholder:text-[var(--text-subtle)] focus:border-accent-400"
+          className="mb-2 w-full rounded-[var(--radius-control)] border border-[var(--glass-border)] bg-[var(--surface-sunken)] px-3 py-2 text-[13px] text-[var(--text)] outline-none placeholder:text-[var(--text-subtle)] focus:border-accent-400"
         />
       ) : null}
     <ul className="max-h-[60dvh] space-y-1 overflow-y-auto overscroll-contain">
@@ -107,17 +107,17 @@ export function ModelPicker({
                 onClose();
               }}
               className={cn(
-                "flex w-full items-center gap-3 rounded-2xl border px-3 py-3 text-left transition",
+                "flex w-full items-center gap-3 rounded-[var(--radius-control)] border px-3 py-3 text-left transition",
                 selected
                   ? "border-[var(--nav-active-border)] bg-[var(--nav-active-bg)]"
-                  : "border-[var(--hairline-soft)] bg-[var(--surface-strong)] hover:bg-[var(--hover)]",
+                  : "border-[var(--glass-border)] bg-[var(--surface-strong)] hover:bg-[var(--hover)]",
                 unavailable && "opacity-55",
               )}
             >
               <span className="min-w-0 flex-1">
                 <span className="block truncate text-[13.5px] font-semibold text-[var(--text)]">{model.name}</span>
                 <span className="mt-0.5 flex items-center gap-2 text-[11.5px] text-[var(--text-subtle)]">
-                  <span className="rounded-md border border-[var(--hairline-soft)] px-1.5 py-0.5">
+                  <span className="rounded-[var(--radius-chip)] border border-[var(--glass-border)] px-1.5 py-0.5">
                     {model.provider ? `${providerLabel(model.provider)} · ${badge(model)}` : badge(model)}
                   </span>
                   {model.available === true ? (