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/runed/dist/utilities/throttled/index.d.ts

@@ -0,0 +1 @@
+export * from "./throttled.svelte.js";

web/node_modules/runed/dist/utilities/throttled/index.js

@@ -0,0 +1 @@
+export * from "./throttled.svelte.js";

web/node_modules/runed/dist/utilities/throttled/throttled.svelte.d.ts

@@ -0,0 +1,8 @@
+import type { Getter, MaybeGetter } from "../../internal/types.js";
+export declare class Throttled<T> {
+    #private;
+    constructor(getter: Getter<T>, wait?: MaybeGetter<number>);
+    get current(): T;
+    cancel(): void;
+    setImmediately(v: T): void;
+}

web/node_modules/runed/dist/utilities/throttled/throttled.svelte.js

@@ -0,0 +1,26 @@
+import { useThrottle } from "../use-throttle/use-throttle.svelte.js";
+import { watch } from "../watch/watch.svelte.js";
+import { noop } from "../../internal/utils/function.js";
+export class Throttled {
+    #current = $state();
+    #throttleFn;
+    constructor(getter, wait = 250) {
+        this.#current = getter(); // Immediately set the initial value
+        this.#throttleFn = useThrottle(() => {
+            this.#current = getter();
+        }, wait);
+        watch(getter, () => {
+            this.#throttleFn()?.catch(noop);
+        });
+    }
+    get current() {
+        return this.#current;
+    }
+    cancel() {
+        this.#throttleFn.cancel();
+    }
+    setImmediately(v) {
+        this.cancel();
+        this.#current = v;
+    }
+}