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/combobox/components/combobox-input.svelte

@@ -0,0 +1,41 @@
+<script lang="ts">
+	import { boxWith, mergeProps } from "svelte-toolbelt";
+	import type { ComboboxInputProps } from "../types.js";
+	import { useId } from "../../../internal/use-id.js";
+	import { FloatingLayer } from "../../utilities/floating-layer/index.js";
+	import { SelectInputState } from "../../select/select.svelte.js";
+
+	let {
+		id = useId(),
+		ref = $bindable(null),
+		child,
+		defaultValue,
+		clearOnDeselect = false,
+		...restProps
+	}: ComboboxInputProps = $props();
+
+	const inputState = SelectInputState.create({
+		id: boxWith(() => id),
+		ref: boxWith(
+			() => ref,
+			(v) => (ref = v)
+		),
+		clearOnDeselect: boxWith(() => clearOnDeselect),
+	});
+
+	if (defaultValue) {
+		inputState.root.opts.inputValue.current = defaultValue;
+	}
+
+	const mergedProps = $derived(
+		mergeProps(restProps, inputState.props, { value: inputState.root.opts.inputValue.current })
+	);
+</script>
+
+<FloatingLayer.Anchor {id} ref={inputState.opts.ref}>
+	{#if child}
+		{@render child({ props: mergedProps })}
+	{:else}
+		<input {...mergedProps} />
+	{/if}
+</FloatingLayer.Anchor>

web/node_modules/bits-ui/dist/bits/combobox/components/combobox-input.svelte.d.ts

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

web/node_modules/bits-ui/dist/bits/combobox/components/combobox-trigger.svelte

@@ -0,0 +1,33 @@
+<script lang="ts">
+	import { boxWith, mergeProps } from "svelte-toolbelt";
+	import type { ComboboxTriggerProps } from "../types.js";
+	import { useId } from "../../../internal/use-id.js";
+	import { SelectComboTriggerState } from "../../select/select.svelte.js";
+
+	let {
+		id = useId(),
+		ref = $bindable(null),
+		child,
+		children,
+		type = "button",
+		...restProps
+	}: ComboboxTriggerProps = $props();
+
+	const triggerState = SelectComboTriggerState.create({
+		id: boxWith(() => id),
+		ref: boxWith(
+			() => ref,
+			(v) => (ref = v)
+		),
+	});
+
+	const mergedProps = $derived(mergeProps(restProps, triggerState.props, { type }));
+</script>
+
+{#if child}
+	{@render child({ props: mergedProps })}
+{:else}
+	<button {...mergedProps}>
+		{@render children?.()}
+	</button>
+{/if}

web/node_modules/bits-ui/dist/bits/combobox/components/combobox-trigger.svelte.d.ts

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

web/node_modules/bits-ui/dist/bits/combobox/components/combobox.svelte

@@ -0,0 +1,86 @@
+<script lang="ts">
+	import { type WritableBox, boxWith } from "svelte-toolbelt";
+	import type { ComboboxRootProps } from "../types.js";
+	import { noop } from "../../../internal/noop.js";
+	import FloatingLayer from "../../utilities/floating-layer/components/floating-layer.svelte";
+	import { SelectRootState } from "../../select/select.svelte.js";
+	import ListboxHiddenInput from "../../select/components/select-hidden-input.svelte";
+	import { watch } from "runed";
+
+	let {
+		value = $bindable(),
+		onValueChange = noop,
+		name = "",
+		disabled = false,
+		type,
+		open = $bindable(false),
+		onOpenChange = noop,
+		onOpenChangeComplete = noop,
+		loop = false,
+		scrollAlignment = "nearest",
+		required = false,
+		items = [],
+		allowDeselect = true,
+		inputValue = "",
+		children,
+	}: ComboboxRootProps = $props();
+
+	if (value === undefined) {
+		const defaultValue = type === "single" ? "" : [];
+		value = defaultValue;
+	}
+
+	watch.pre(
+		() => value,
+		() => {
+			if (value !== undefined) return;
+			value = type === "single" ? "" : [];
+		}
+	);
+
+	const rootState = SelectRootState.create({
+		type,
+		value: boxWith(
+			() => value!,
+			(v) => {
+				value = v;
+				// @ts-expect-error - we know
+				onValueChange(v);
+			}
+		) as WritableBox<string> | WritableBox<string[]>,
+		disabled: boxWith(() => disabled),
+		required: boxWith(() => required),
+		open: boxWith(
+			() => open,
+			(v) => {
+				open = v;
+				onOpenChange(v);
+			}
+		),
+		loop: boxWith(() => loop),
+		scrollAlignment: boxWith(() => scrollAlignment),
+		name: boxWith(() => name),
+		isCombobox: true,
+		items: boxWith(() => items),
+		allowDeselect: boxWith(() => allowDeselect),
+		inputValue: boxWith(
+			() => inputValue,
+			(v) => (inputValue = v)
+		),
+		onOpenChangeComplete: boxWith(() => onOpenChangeComplete),
+	});
+</script>
+
+<FloatingLayer>
+	{@render children?.()}
+</FloatingLayer>
+
+{#if Array.isArray(rootState.opts.value.current)}
+	{#if rootState.opts.value.current.length}
+		{#each rootState.opts.value.current as item (item)}
+			<ListboxHiddenInput value={item} />
+		{/each}
+	{/if}
+{:else}
+	<ListboxHiddenInput bind:value={rootState.opts.value.current as string} />
+{/if}

web/node_modules/bits-ui/dist/bits/combobox/components/combobox.svelte.d.ts

@@ -0,0 +1,3 @@
+declare const Combobox: import("svelte").Component<import("../types.js").ComboboxRootPropsWithoutHTML, {}, "value" | "open">;
+type Combobox = ReturnType<typeof Combobox>;
+export default Combobox;