fix(tooltip): the hover entrance animation never played — content mounted as instant-open

The tooltip's `delayed-open` entrance (the per-side slide, and now the bounce) NEVER
fired: the content only mounts when `open` becomes true, and the hover-delay timer
set `internalTooltipState = 'instant-open'` AT THAT MOMENT — so the content always
mounted as `instant-open` (no entrance). `delayed-open` was only ever the pending
state while the content was still unmounted. A long-standing dead animation.

Fix: the hover-delay timer now keeps `'delayed-open'` as the content mounts, so the
eidos `[data-state='delayed-open']` entrance plays. `'instant-open'` stays reserved
for focus / skip-delay (intentionally no entrance). Test updated (it asserted the
buggy `instant-open`); tooltip provider suite 4/4.

Also makes the bounce clearly perceptible (it was too subtle to notice even when
forced): scale 0.5 → 1.18 (overshoot) → 0.9 (undershoot) → 1.06 (second bounce) → 1,
over `--duration-slow`. Verified end-to-end in-browser: hover → content mounts
`delayed-open` → `animation-name: eidos-tooltip-bounce-in`.

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

src/uix/eidos/components/tooltip/tooltip.css

@@ -96,7 +96,7 @@
  * registered `motion` preset. */
 
 [data-tooltip-content][data-state='delayed-open'] {
-	animation: eidos-tooltip-bounce-in var(--duration-moderate) var(--ease-out) both;
+	animation: eidos-tooltip-bounce-in var(--duration-slow) var(--ease-out) both;
 }
 [data-tooltip-content][data-state='closed'] {
 	animation: eidos-tooltip-bounce-out var(--duration-fast) var(--ease-in) both;
@@ -108,14 +108,15 @@
 	transform: none;
 }
 
-/* A real bounce: grow past 1 (overshoot 1.06), dip slightly under (undershoot
+/* A real bounce (muelle): grow from half size, overshoot clearly past 1, dip
- * 0.97), settle to 1. Subtle in absolute terms (a tooltip is small) but clearly a
+ * under, a smaller second overshoot, then settle — a perceptible spring, not a
- * "rebote". `scale` (the individual property, not the `transform` shorthand)
+ * subtle pop. `scale` (the individual property, not the `transform` shorthand)
  * composes with `transform-origin` and never clobbers a sibling transform. */
 @keyframes eidos-tooltip-bounce-in {
-	0% { opacity: 0; scale: 0.7; }
+	0% { opacity: 0; scale: 0.5; }
-	50% { opacity: 1; scale: 1.06; }
+	38% { opacity: 1; scale: 1.18; }
-	74% { scale: 0.97; }
+	60% { scale: 0.9; }
+	80% { scale: 1.06; }
 	100% { scale: 1; }
 }
 @keyframes eidos-tooltip-bounce-out {

src/uix/soma/components/tooltip/tooltip-provider.svelte.test.ts

@@ -151,8 +151,9 @@ describe('TooltipProvider', () => {
 		harness.tasks.get('soma:tooltip:tooltip-root:open')?.();
 		await tick();
 		expect(opts.open.current).toBe(true);
-		expect(result.provider.tooltipState).toBe('instant-open');
+		// Hover-delay path opens with the ENTRANCE state so the eidos animation plays.
-		expect(triggerEl.getAttribute('data-state')).toBe('instant-open');
+		expect(result.provider.tooltipState).toBe('delayed-open');
+		expect(triggerEl.getAttribute('data-state')).toBe('delayed-open');
 
 		result.trigger.onpointerleave();
 		expect(harness.schedule).toHaveBeenCalledWith(

src/uix/soma/components/tooltip/tooltip-provider.svelte.ts

@@ -220,7 +220,12 @@ export class TooltipProvider {
 				this.delay,
 				() => {
 					this.openTimer = null;
-					this.internalTooltipState = 'instant-open';
+					// Stay 'delayed-open' (NOT 'instant-open') as the content MOUNTS, so the
+					// eidos entrance animation keyed on `[data-state='delayed-open']` actually
+					// plays. The content only mounts here (open → true), so setting
+					// 'instant-open' meant the hover entrance NEVER fired. 'instant-open' stays
+					// reserved for focus / skip-delay (no entrance).
+					this.internalTooltipState = 'delayed-open';
 					this.opts.open.current = true;
 				},
 				{ replace: true, meta: { component: 'tooltip', action: 'open-delay' } }