feat(hyprdrive): tune beacon notification open/close animation

- beacon: snappier in-app dissolve (OUTRO_DURATION 0.4 -> 0.2).
- hyprland.lua: split the global `layers` animation into layersIn/layersOut
  so open and close differ. layersIn keeps the springy myBezier slide-in;
  layersOut slides the surface back off-screen with a new easeInQuint-ish
  `slideOutLate` curve — it creeps slowly then whips away in the final
  quarter, instead of a uniform fade.
- windowrules.lua: drop `no_anim` from the beacon layerrule (keep blur) so
  notification cards ride those layer animations again (they slid in/out via
  the global anim before, since no per-namespace no_anim was deployed).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

desktopenvs/hyprdrive/beacon/lib/hologram.py

@@ -41,7 +41,7 @@ class HologramOverlay:
     EDGE_FADE_Y = 34.0          # smooth vertical fade-out
     INTRO_DURATION = 0.9        # brisk 'materialise out of static' when a card pops in
     INTRO_STATIC = 900          # static specks at the very start of the intro
-    OUTRO_DURATION = 0.4        # quick reverse dissolve back into static on dismiss
+    OUTRO_DURATION = 0.2        # snappy reverse dissolve back into static on dismiss
 
     def __init__(self, enabled: bool = True, clip_func=None, fade_widget=None,
                  intro_duration: float | None = None) -> None:

desktopenvs/hyprdrive/hypr/hyprland.lua

@@ -167,6 +167,12 @@ hl.config({
 -- final position rather than gliding to a dead stop. This gives the DE an energetic feel.
 hl.curve("myBezier", { type = "bezier", points = { {0.05, 0.9}, {0.1, 1.05} } })
 
+-- Strong ease-in for the layer *close* slide (easeInQuint-ish): the surface creeps
+-- slowly for the first ~3/4 of the animation and only whips off-screen in the final
+-- quarter, so a dismissed notification lingers then snaps away rather than fading out
+-- uniformly all at once.
+hl.curve("slideOutLate", { type = "bezier", points = { {0.64, 0.0}, {0.78, 0.0} } })
+
 -- Window open and resize animation uses the custom spring curve.
 -- speed = 7 (Hyprland internal units; higher = faster) keeps the open feeling snappy.
 hl.animation({ leaf = "windows",          enabled = true, speed = 7,  bezier = "myBezier" })
@@ -192,11 +198,15 @@ hl.animation({ leaf = "fade",             enabled = true, speed = 7,  bezier = "
 hl.animation({ leaf = "specialWorkspace", enabled = true, speed = 10, bezier = "default",  style = "slidevert" })
 
 -- Layer-shell surfaces (the astal-menu control centre, notifications, the bar) slide
--- in from their anchored edge with the bouncy myBezier curve, so opening the menu
--- reads as a springy slide-down rather than a plain fade. (A per-namespace layerrule
+-- in from their anchored edge with the bouncy myBezier curve, so opening reads as a
+-- springy slide-down rather than a plain fade. In/out are split: the *close* also
+-- slides off-screen, but with the slideOutLate ease-in so it lingers slowly then whips
+-- away in the final quarter instead of fading out uniformly. beacon notification cards
+-- ride this — springy slide-in, slow-then-fast slide-out. (A per-namespace layerrule
 -- was tried but this hyprlua build doesn't honour its animation timing; the global
--- `layers` leaf does.)
-hl.animation({ leaf = "layers",           enabled = true, speed = 5,  bezier = "myBezier", style = "slide" })
+-- layersIn/layersOut leaves do.)
+hl.animation({ leaf = "layersIn",         enabled = true, speed = 5,  bezier = "myBezier",     style = "slide" })
+hl.animation({ leaf = "layersOut",        enabled = true, speed = 7,  bezier = "slideOutLate", style = "slide" })
 
 --------------
 ---- DEVICE ---

desktopenvs/hyprdrive/hypr/usr/windowrules.lua

@@ -129,11 +129,12 @@ end
 
 -- beacon (our notification daemon, namespace "beacon") renders holographic
 -- notification cards. Blur what shows through their translucent violet glass so
--- they read as the same frosted holo panels as the menus. no_anim: each card
--- materialises out of static via its own in-app hologram intro, so the compositor
--- should map the surface in place rather than slide it.
+-- they read as the same frosted holo panels as the menus. Unlike the persistent
+-- panels above, beacon deliberately keeps the global layer animation (no no_anim):
+-- cards slide in from the top (layersIn, springy) and slide back off-screen on
+-- dismiss (layersOut) with the slow-then-fast slideOutLate ease-in.
 hl.layer_rule({ name = "cosmoshell-blur-beacon", match = { namespace = "beacon" },
-                blur = true, ignore_alpha = 0.1, no_anim = true })
+                blur = true, ignore_alpha = 0.1 })
 
 -- smart gaps
 hl.workspace_rule({ workspace = "w[tv1]s[false]", gaps_out = 0, gaps_in = 0 })