feat: Phase 1 — extract the client (web SPA + desktop) to dtoro/oikos-web

Problem: the hexagonal refactor churns the backend tree for nine more
phases; the UI delivery stack (web/ SPA, cmd/desktop Wails wrapper,
compose/web image) must move to its own repo first so doc/layout
rewrites land once on a backend-only tree.

Change:
- New repo git.hubris.network/dtoro/oikos-web (v0.33.0): web/, desktop/
  (updateURL repointed to oikos-web releases), compose/, own CI (web +
  desktop jobs), own deploy script (CI-green gate, TOCTOU guard,
  version-tagged images, prune-to-3), own webhook receiver on :9798 +
  launchd unit, own compose project publishing the same 8091:80.
- Cutover executed on mac-mini in order: oikos stack's web service
  stopped+removed, oikos-web project brought up on 8091; outer Caddy
  untouched (targets the published port) — serving + Authentik flow +
  /wails 404 quirk verified post-cutover.
- Stripped from oikos: web/, cmd/desktop/, compose/web/, desktop CI
  workflow, ci.yml web job, Makefile ui/desktop/desktop-package/install
  targets, the compose web service, oikos-web from deploy.sh's fallback
  prune list; wails + go-keyring dropped from go.mod, vendor synced.
- README / CONTRIBUTING / AGENTS.md / .agents dev+operations docs now
  point at the new repo; mbse + mascot design docs carry a path note.

Risk: production SPA serving depends on the new pipeline now; rollback
is versioned-image re-up of the old web service from a pre-split
checkout (port 8091). Desktop builds installed before the split still
check dtoro/oikos releases — one manual reinstall, noted in the
oikos-web release notes.

Verification: go vet, make test (race), make generate-check, golangci
(no new findings; baseline down 400→365); post-cutover curls —
localhost:8091 200, /wails/runtime.js 404, outer Caddy 302 Authentik.

web/node_modules/bits-ui/dist/bits/time-range-field/components/time-range-field-input.svelte

@@ -0,0 +1,43 @@
+<script lang="ts">
+	import { boxWith, mergeProps } from "svelte-toolbelt";
+	import type { TimeRangeFieldInputProps } from "../types.js";
+	import { TimeRangeFieldInputState } from "../time-range-field.svelte.js";
+	import { createId } from "../../../internal/create-id.js";
+	import TimeFieldHiddenInput from "../../time-field/components/time-field-hidden-input.svelte";
+
+	const uid = $props.id();
+
+	let {
+		id = createId(uid),
+		ref = $bindable(null),
+		name = "",
+		child,
+		children,
+		type,
+		...restProps
+	}: TimeRangeFieldInputProps = $props();
+
+	const inputState = TimeRangeFieldInputState.create(
+		{
+			id: boxWith(() => id),
+			ref: boxWith(
+				() => ref,
+				(v) => (ref = v)
+			),
+			name: boxWith(() => name),
+		},
+		type
+	);
+
+	const mergedProps = $derived(mergeProps(restProps, inputState.props, { role: "presentation" }));
+</script>
+
+{#if child}
+	{@render child({ props: mergedProps, segments: inputState.root.segmentContents })}
+{:else}
+	<div {...mergedProps}>
+		{@render children?.({ segments: inputState.root.segmentContents })}
+	</div>
+{/if}
+
+<TimeFieldHiddenInput />

web/node_modules/bits-ui/dist/bits/time-range-field/components/time-range-field-input.svelte.d.ts

@@ -0,0 +1,4 @@
+import type { TimeRangeFieldInputProps } from "../types.js";
+declare const TimeRangeFieldInput: import("svelte").Component<TimeRangeFieldInputProps, {}, "ref">;
+type TimeRangeFieldInput = ReturnType<typeof TimeRangeFieldInput>;
+export default TimeRangeFieldInput;

web/node_modules/bits-ui/dist/bits/time-range-field/components/time-range-field-label.svelte

@@ -0,0 +1,34 @@
+<script lang="ts">
+	import { boxWith, mergeProps } from "svelte-toolbelt";
+	import { TimeRangeFieldLabelState } from "../time-range-field.svelte.js";
+	import type { TimeRangeFieldLabelProps } from "../types.js";
+	import { createId } from "../../../internal/create-id.js";
+
+	const uid = $props.id();
+
+	let {
+		id = createId(uid),
+		ref = $bindable(null),
+		children,
+		child,
+		...restProps
+	}: TimeRangeFieldLabelProps = $props();
+
+	const labelState = TimeRangeFieldLabelState.create({
+		id: boxWith(() => id),
+		ref: boxWith(
+			() => ref,
+			(v) => (ref = v)
+		),
+	});
+
+	const mergedProps = $derived(mergeProps(restProps, labelState.props));
+</script>
+
+{#if child}
+	{@render child({ props: mergedProps })}
+{:else}
+	<span {...mergedProps}>
+		{@render children?.()}
+	</span>
+{/if}

web/node_modules/bits-ui/dist/bits/time-range-field/components/time-range-field-label.svelte.d.ts

@@ -0,0 +1,4 @@
+import type { TimeRangeFieldLabelProps } from "../types.js";
+declare const TimeRangeFieldLabel: import("svelte").Component<TimeRangeFieldLabelProps, {}, "ref">;
+type TimeRangeFieldLabel = ReturnType<typeof TimeRangeFieldLabel>;
+export default TimeRangeFieldLabel;

web/node_modules/bits-ui/dist/bits/time-range-field/components/time-range-field.svelte

@@ -0,0 +1,145 @@
+<script lang="ts" module>
+	import type { TimeRange, TimeValue } from "../../../shared/date/types.js";
+	import type { Time } from "@internationalized/date";
+
+	type T = unknown;
+</script>
+
+<script lang="ts" generics="T extends TimeValue = Time">
+	import { watch } from "runed";
+	import { boxWith, mergeProps } from "svelte-toolbelt";
+	import { TimeRangeFieldRootState } from "../time-range-field.svelte.js";
+	import type { TimeRangeFieldRootProps } from "../types.js";
+	import { createId } from "../../../internal/create-id.js";
+	import { noop } from "../../../internal/noop.js";
+	import { getDefaultTime } from "../../../internal/date-time/utils.js";
+	import { resolveLocaleProp } from "../../utilities/config/prop-resolvers.js";
+
+	const uid = $props.id();
+
+	let {
+		id = createId(uid),
+		ref = $bindable(null),
+		value = $bindable(),
+		onValueChange = noop,
+		placeholder = $bindable(),
+		onPlaceholderChange = noop,
+		disabled = false,
+		readonly = false,
+		required = false,
+		hourCycle,
+		granularity,
+		locale,
+		hideTimeZone = false,
+		validate = noop,
+		onInvalid = noop,
+		maxValue,
+		minValue,
+		readonlySegments = [],
+		children,
+		child,
+		onStartValueChange = noop,
+		onEndValueChange = noop,
+		errorMessageId,
+		...restProps
+	}: TimeRangeFieldRootProps<T> = $props();
+
+	let startValue = $state<T | undefined>(value?.start);
+	let endValue = $state<T | undefined>(value?.end);
+
+	function handleDefaultPlaceholder() {
+		if (placeholder !== undefined) return;
+		const defaultPlaceholder = getDefaultTime({ granularity, defaultValue: value?.start });
+		placeholder = defaultPlaceholder;
+	}
+
+	// SSR
+	handleDefaultPlaceholder();
+
+	watch.pre(
+		() => placeholder,
+		() => {
+			handleDefaultPlaceholder();
+		}
+	);
+
+	function handleDefaultValue() {
+		if (value !== undefined) return;
+		const defaultValue = { start: undefined, end: undefined };
+		value = defaultValue;
+	}
+
+	// SSR
+	handleDefaultValue();
+
+	/**
+	 * Covers an edge case where when a spread props object is reassigned,
+	 * the props are reset to their default values, which would make value
+	 * undefined which causes errors to be thrown.
+	 */
+	watch.pre(
+		() => value,
+		() => {
+			handleDefaultValue();
+		}
+	);
+
+	const rootState = TimeRangeFieldRootState.create({
+		id: boxWith(() => id),
+		ref: boxWith(
+			() => ref,
+			(v) => (ref = v)
+		),
+		disabled: boxWith(() => disabled),
+		readonly: boxWith(() => readonly),
+		required: boxWith(() => required),
+		hourCycle: boxWith(() => hourCycle),
+		granularity: boxWith(() => granularity),
+		locale: resolveLocaleProp(() => locale),
+		hideTimeZone: boxWith(() => hideTimeZone),
+		validate: boxWith(() => validate),
+		maxValue: boxWith(() => maxValue),
+		minValue: boxWith(() => minValue),
+		placeholder: boxWith(
+			() => placeholder as TimeValue,
+			(v) => {
+				placeholder = v;
+				onPlaceholderChange(v);
+			}
+		),
+		readonlySegments: boxWith(() => readonlySegments),
+		value: boxWith(
+			() => value as TimeRange<T>,
+			(v) => {
+				value = v;
+				onValueChange(v);
+			}
+		),
+		startValue: boxWith(
+			() => startValue,
+			(v) => {
+				startValue = v;
+				onStartValueChange(v);
+			}
+		),
+		endValue: boxWith(
+			() => endValue,
+			(v) => {
+				endValue = v;
+				onEndValueChange(v);
+			}
+		),
+		onInvalid: boxWith(() => onInvalid),
+		errorMessageId: boxWith(() => errorMessageId),
+	});
+
+	const mergedProps = $derived(mergeProps(restProps, rootState.props));
+</script>
+
+{#if child}
+	{@render child({ props: mergedProps })}
+{:else}
+	<div {...mergedProps}>
+		{@render children?.()}
+	</div>
+{/if}

web/node_modules/bits-ui/dist/bits/time-range-field/components/time-range-field.svelte.d.ts

@@ -0,0 +1,20 @@
+import type { TimeValue } from "../../../shared/date/types.js";
+import type { Time } from "@internationalized/date";
+import type { TimeRangeFieldRootProps } from "../types.js";
+declare class __sveltets_Render<T extends TimeValue = Time> {
+    props(): TimeRangeFieldRootProps<T>;
+    events(): {};
+    slots(): {};
+    bindings(): "value" | "placeholder" | "ref";
+    exports(): {};
+}
+interface $$IsomorphicComponent {
+    new <T extends TimeValue = Time>(options: import('svelte').ComponentConstructorOptions<ReturnType<__sveltets_Render<T>['props']>>): import('svelte').SvelteComponent<ReturnType<__sveltets_Render<T>['props']>, ReturnType<__sveltets_Render<T>['events']>, ReturnType<__sveltets_Render<T>['slots']>> & {
+        $$bindings?: ReturnType<__sveltets_Render<T>['bindings']>;
+    } & ReturnType<__sveltets_Render<T>['exports']>;
+    <T extends TimeValue = Time>(internal: unknown, props: ReturnType<__sveltets_Render<T>['props']> & {}): ReturnType<__sveltets_Render<T>['exports']>;
+    z_$$bindings?: ReturnType<__sveltets_Render<any>['bindings']>;
+}
+declare const TimeRangeField: $$IsomorphicComponent;
+type TimeRangeField<T extends TimeValue = Time> = InstanceType<typeof TimeRangeField<T>>;
+export default TimeRangeField;