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/use-debounce/index.d.ts

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

web/node_modules/runed/dist/utilities/use-debounce/index.js

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

web/node_modules/runed/dist/utilities/use-debounce/use-debounce.svelte.d.ts

@@ -0,0 +1,25 @@
+import type { MaybeGetter } from "../../internal/types.js";
+type UseDebounceReturn<Args extends unknown[], Return> = ((this: unknown, ...args: Args) => Promise<Return>) & {
+    cancel: () => void;
+    runScheduledNow: () => Promise<void>;
+    pending: boolean;
+};
+/**
+ * Function that takes a callback, and returns a debounced version of it.
+ * When calling the debounced function, it will wait for the specified time
+ * before calling the original callback. If the debounced function is called
+ * again before the time has passed, the timer will be reset.
+ *
+ * You can await the debounced function to get the value when it is eventually
+ * called.
+ *
+ * The second parameter is the time to wait before calling the original callback.
+ * Alternatively, it can also be a getter function that returns the time to wait.
+ *
+ * @see {@link https://runed.dev/docs/utilities/use-debounce}
+ *
+ * @param callback The callback to call when the time has passed.
+ * @param wait The length of time to wait in ms, defaults to 250.
+ */
+export declare function useDebounce<Args extends unknown[], Return>(callback: (...args: Args) => Return, wait?: MaybeGetter<number | undefined>): UseDebounceReturn<Args, Return>;
+export {};

web/node_modules/runed/dist/utilities/use-debounce/use-debounce.svelte.js

@@ -0,0 +1,92 @@
+import { extract } from "../extract/extract.svelte.js";
+/**
+ * Function that takes a callback, and returns a debounced version of it.
+ * When calling the debounced function, it will wait for the specified time
+ * before calling the original callback. If the debounced function is called
+ * again before the time has passed, the timer will be reset.
+ *
+ * You can await the debounced function to get the value when it is eventually
+ * called.
+ *
+ * The second parameter is the time to wait before calling the original callback.
+ * Alternatively, it can also be a getter function that returns the time to wait.
+ *
+ * @see {@link https://runed.dev/docs/utilities/use-debounce}
+ *
+ * @param callback The callback to call when the time has passed.
+ * @param wait The length of time to wait in ms, defaults to 250.
+ */
+export function useDebounce(callback, wait) {
+    let context = $state(null);
+    const wait$ = $derived(extract(wait, 250));
+    function debounced(...args) {
+        if (context) {
+            // Old context will be reused so callers awaiting the promise will get the
+            // new value
+            if (context.timeout) {
+                clearTimeout(context.timeout);
+            }
+        }
+        else {
+            // No old context, create a new one
+            let resolve;
+            let reject;
+            const promise = new Promise((res, rej) => {
+                resolve = res;
+                reject = rej;
+            });
+            context = {
+                timeout: null,
+                runner: null,
+                promise,
+                resolve: resolve,
+                reject: reject,
+            };
+        }
+        context.runner = async () => {
+            // Grab the context and reset it
+            // -> new debounced calls will create a new context
+            if (!context)
+                return;
+            const ctx = context;
+            context = null;
+            try {
+                ctx.resolve(await callback.apply(this, args));
+            }
+            catch (error) {
+                ctx.reject(error);
+            }
+        };
+        context.timeout = setTimeout(context.runner, wait$);
+        return context.promise;
+    }
+    debounced.cancel = async () => {
+        if (!context || context.timeout === null) {
+            // Wait one event loop to see if something triggered the debounced function
+            await new Promise((resolve) => setTimeout(resolve, 0));
+            if (!context || context.timeout === null)
+                return;
+        }
+        clearTimeout(context.timeout);
+        context.reject("Cancelled");
+        context = null;
+    };
+    debounced.runScheduledNow = async () => {
+        if (!context || !context.timeout) {
+            // Wait one event loop to see if something triggered the debounced function
+            await new Promise((resolve) => setTimeout(resolve, 0));
+            if (!context || !context.timeout)
+                return;
+        }
+        clearTimeout(context.timeout);
+        context.timeout = null;
+        await context.runner?.();
+    };
+    Object.defineProperty(debounced, "pending", {
+        enumerable: true,
+        get() {
+            return !!context?.timeout;
+        },
+    });
+    return debounced;
+}