Normalize Soma root service references

src/uix/soma/components/alert-dialog/alert-dialog-provider.svelte.ts

@@ -17,7 +17,7 @@ import { ALERT_DIALOG_LANGS } from './langs';
  * differently, and they wire `onclick` to close the dialog.
  */
 import { alertDialogMorfo } from '../../../morfo/components/alert-dialog';
-import type { SomaRuntimePart } from '../../runtime.svelte';
+import type { SomaRuntime, SomaRuntimePart } from '../../runtime.svelte';
 
 
 // ── Action button (primary / destructive) ─────────────────────────────────
@@ -33,22 +33,28 @@ export class AlertDialogActionProvider {
 	}
 
 	readonly dialog: DialogProvider;
-	readonly soma = Soma.get();
+	readonly soma: Soma;
+	readonly runtime: SomaRuntime;
 
 	private constructor(opts: AlertDialogActionOpts) {
 		this.opts = opts;
 		this.dialog = DialogProvider.require();
-		this.runtimePart = Soma.require()
-			.runtime(alertDialogMorfo, {
+		this.soma = Soma.require();
+		this.runtime = this.soma.runtime(alertDialogMorfo, {
 			props: {
 				ariaLabel: () => this.resolvedAriaLabel
 			}
-			})
-			.part('action', { id: opts.id, ref: opts.ref, owner: this, syncAttrs: true });
+		});
+		this.runtimePart = this.runtime.part('action', {
+			id: opts.id,
+			ref: opts.ref,
+			owner: this,
+			syncAttrs: true
+		});
 	}
 
 	readonly resolvedAriaLabel = $derived.by(
-		() => this.opts.ariaLabel.current || this.soma?.langs.ts(ALERT_DIALOG_LANGS.ACTION)
+		() => this.opts.ariaLabel.current || this.soma.langs.ts(ALERT_DIALOG_LANGS.ACTION)
 	);
 
 	readonly onclick = (_e: SomaMouseEvent<HTMLButtonElement>) => {
@@ -76,22 +82,28 @@ export class AlertDialogCancelProvider {
 	}
 
 	readonly dialog: DialogProvider;
-	readonly soma = Soma.get();
+	readonly soma: Soma;
+	readonly runtime: SomaRuntime;
 
 	private constructor(opts: AlertDialogCancelOpts) {
 		this.opts = opts;
 		this.dialog = DialogProvider.require();
-		this.runtimePart = Soma.require()
-			.runtime(alertDialogMorfo, {
+		this.soma = Soma.require();
+		this.runtime = this.soma.runtime(alertDialogMorfo, {
 			props: {
 				ariaLabel: () => this.resolvedAriaLabel
 			}
-			})
-			.part('cancel', { id: opts.id, ref: opts.ref, owner: this, syncAttrs: true });
+		});
+		this.runtimePart = this.runtime.part('cancel', {
+			id: opts.id,
+			ref: opts.ref,
+			owner: this,
+			syncAttrs: true
+		});
 	}
 
 	readonly resolvedAriaLabel = $derived.by(
-		() => this.opts.ariaLabel.current || this.soma?.langs.ts(ALERT_DIALOG_LANGS.CANCEL)
+		() => this.opts.ariaLabel.current || this.soma.langs.ts(ALERT_DIALOG_LANGS.CANCEL)
 	);
 
 	readonly onclick = (_e: SomaMouseEvent<HTMLButtonElement>) => {

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

@@ -35,6 +35,7 @@ export class CollapsibleProvider {
 	}
 
 	readonly opts: CollapsibleOpts;
+	readonly soma: Soma;
 	readonly runtime: SomaRuntime;
 	readonly runtimePart: SomaRuntimePart;
 
@@ -47,8 +48,8 @@ export class CollapsibleProvider {
 		this.opts = opts;
 		CollapsibleProvider.ctx.set(this);
 
-		const soma = Soma.require();
-		this.runtime = soma.runtime(collapsibleMorfo, {
+		this.soma = Soma.require();
+		this.runtime = this.soma.runtime(collapsibleMorfo, {
 			states: {
 				open: () => opts.open.current
 			},

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

@@ -55,6 +55,7 @@ export class SwitchProvider {
 	readonly field = FieldProvider.get();
 	readonly runtime: SomaRuntime;
 	readonly runtimePart: SomaRuntimePart;
+	readonly soma: Soma;
 
 	private constructor(opts: SwitchOpts) {
 		this.opts = opts;
@@ -64,8 +65,8 @@ export class SwitchProvider {
 		// attribute lands on this button. Direct assign — NOT $effect (A30).
 		if (this.field) this.field.inputId.current = opts.id.current;
 
-		const soma = Soma.require();
-		this.runtime = soma.runtime(switchMorfo, {
+		this.soma = Soma.require();
+		this.runtime = this.soma.runtime(switchMorfo, {
 			states: {
 				checked: () => opts.checked.current
 			},

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

@@ -58,6 +58,7 @@ export class ToggleProvider {
 	readonly field = FieldProvider.get();
 	readonly runtime: SomaRuntime;
 	readonly runtimePart: SomaRuntimePart;
+	readonly soma: Soma;
 
 	private constructor(opts: ToggleOpts) {
 		this.opts = opts;
@@ -74,8 +75,8 @@ export class ToggleProvider {
 		//     toggle. El handler flipea el estado bound. El gesto de contact
 		//     está implícito en el botón nativo; no se descompone en dos
 		//     eventos porque la operación es instantánea.
-		const soma = Soma.require();
-		this.runtime = soma.runtime(toggleMorfo, {
+		this.soma = Soma.require();
+		this.runtime = this.soma.runtime(toggleMorfo, {
 			states: {
 				on: () => opts.pressed.current
 			},