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/utilities/presence-layer/index.d.ts

@@ -0,0 +1,2 @@
+export { default as PresenceLayer } from "./presence-layer.svelte";
+export type { PresenceLayerProps } from "./types.js";

web/node_modules/bits-ui/dist/bits/utilities/presence-layer/index.js

@@ -0,0 +1 @@
+export { default as PresenceLayer } from "./presence-layer.svelte";

web/node_modules/bits-ui/dist/bits/utilities/presence-layer/presence-layer.svelte

@@ -0,0 +1,19 @@
+<script lang="ts">
+	import { boxWith } from "svelte-toolbelt";
+	import type { PresenceLayerImplProps } from "./types.js";
+	import { Presence } from "./presence.svelte.js";
+
+	let { open, forceMount, presence, ref }: PresenceLayerImplProps = $props();
+
+	const presenceState = new Presence({
+		open: boxWith(() => open),
+		ref,
+	});
+</script>
+
+{#if forceMount || open || presenceState.isPresent}
+	{@render presence?.({
+		present: presenceState.isPresent,
+		transitionStatus: presenceState.transitionStatus,
+	})}
+{/if}

web/node_modules/bits-ui/dist/bits/utilities/presence-layer/presence-layer.svelte.d.ts

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

web/node_modules/bits-ui/dist/bits/utilities/presence-layer/presence.svelte.d.ts

@@ -0,0 +1,15 @@
+import { type ReadableBox, type ReadableBoxedValues } from "svelte-toolbelt";
+import type { TransitionState } from "../../../internal/attrs.js";
+export interface PresenceOptions extends ReadableBoxedValues<{
+    open: boolean;
+    ref: HTMLElement | null;
+}> {
+}
+export declare class Presence {
+    #private;
+    readonly opts: PresenceOptions;
+    present: ReadableBox<boolean>;
+    constructor(opts: PresenceOptions);
+    isPresent: boolean;
+    get transitionStatus(): TransitionState;
+}

web/node_modules/bits-ui/dist/bits/utilities/presence-layer/presence.svelte.js

@@ -0,0 +1,61 @@
+import { onDestroyEffect } from "svelte-toolbelt";
+import { watch } from "runed";
+import { AnimationsComplete } from "../../../internal/animations-complete.js";
+export class Presence {
+    opts;
+    present;
+    #afterAnimations;
+    #isPresent = $state(false);
+    #hasMounted = false;
+    #transitionStatus = $state(undefined);
+    #transitionFrame = null;
+    constructor(opts) {
+        this.opts = opts;
+        this.present = this.opts.open;
+        this.#isPresent = opts.open.current;
+        this.#afterAnimations = new AnimationsComplete({
+            ref: this.opts.ref,
+            afterTick: this.opts.open,
+        });
+        onDestroyEffect(() => this.#clearTransitionFrame());
+        watch(() => this.present.current, (isOpen) => {
+            if (!this.#hasMounted) {
+                this.#hasMounted = true;
+                return;
+            }
+            this.#clearTransitionFrame();
+            if (isOpen) {
+                this.#isPresent = true;
+            }
+            this.#transitionStatus = isOpen ? "starting" : "ending";
+            if (isOpen) {
+                this.#transitionFrame = window.requestAnimationFrame(() => {
+                    this.#transitionFrame = null;
+                    if (this.present.current) {
+                        this.#transitionStatus = undefined;
+                    }
+                });
+            }
+            this.#afterAnimations.run(() => {
+                if (isOpen !== this.present.current)
+                    return;
+                if (!isOpen) {
+                    this.#isPresent = false;
+                }
+                this.#transitionStatus = undefined;
+            });
+        });
+    }
+    isPresent = $derived.by(() => {
+        return this.#isPresent;
+    });
+    get transitionStatus() {
+        return this.#transitionStatus;
+    }
+    #clearTransitionFrame() {
+        if (this.#transitionFrame === null)
+            return;
+        window.cancelAnimationFrame(this.#transitionFrame);
+        this.#transitionFrame = null;
+    }
+}

web/node_modules/bits-ui/dist/bits/utilities/presence-layer/types.d.ts

@@ -0,0 +1,22 @@
+import type { Snippet } from "svelte";
+import type { ReadableBox } from "svelte-toolbelt";
+import type { TransitionState } from "../../../internal/attrs.js";
+export type PresenceLayerProps = {
+    /**
+     * Whether to force mount the component.
+     */
+    forceMount?: boolean;
+};
+export type PresenceLayerImplProps = PresenceLayerProps & {
+    /**
+     * The open state of the component.
+     */
+    open: boolean;
+    presence?: Snippet<[
+        {
+            present: boolean;
+            transitionStatus: TransitionState;
+        }
+    ]>;
+    ref: ReadableBox<HTMLElement | null>;
+};

web/node_modules/bits-ui/dist/bits/utilities/presence-layer/types.js

@@ -0,0 +1 @@
+export {};