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/enhanced-resolve/lib/forEachBail.js

@@ -0,0 +1,50 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+/** @typedef {import("./Resolver").ResolveRequest} ResolveRequest */
+
+/**
+ * @template T
+ * @template Z
+ * @callback Iterator
+ * @param {T} item item
+ * @param {(err?: null | Error, result?: null | Z) => void} callback callback
+ * @param {number} i index
+ * @returns {void}
+ */
+
+/**
+ * @template T
+ * @template Z
+ * @param {T[]} array array
+ * @param {Iterator<T, Z>} iterator iterator
+ * @param {(err?: null | Error, result?: null | Z, i?: number) => void} callback callback after all items are iterated
+ * @returns {void}
+ */
+module.exports = function forEachBail(array, iterator, callback) {
+	if (array.length === 0) return callback();
+
+	let i = 0;
+	const next = () => {
+		/** @type {boolean | undefined} */
+		let loop;
+		iterator(
+			array[i++],
+			(err, result) => {
+				if (err || result !== undefined || i >= array.length) {
+					return callback(err, result, i);
+				}
+				if (loop === false) while (next());
+				loop = true;
+			},
+			i,
+		);
+		if (!loop) loop = false;
+		return loop;
+	};
+	while (next());
+};