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/tapable/lib/AsyncSeriesLoopHook.js

@@ -0,0 +1,37 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const Hook = require("./Hook");
+const HookCodeFactory = require("./HookCodeFactory");
+
+class AsyncSeriesLoopHookCodeFactory extends HookCodeFactory {
+	content({ onError, onDone }) {
+		return this.callTapsLooping({
+			onError: (i, err, next, doneBreak) => onError(err) + doneBreak(true),
+			onDone
+		});
+	}
+}
+
+const factory = new AsyncSeriesLoopHookCodeFactory();
+
+function COMPILE(options) {
+	factory.setup(this, options);
+	return factory.create(options);
+}
+
+function AsyncSeriesLoopHook(args = [], name = undefined) {
+	const hook = new Hook(args, name);
+	hook.constructor = AsyncSeriesLoopHook;
+	hook.compile = COMPILE;
+	hook._call = undefined;
+	hook.call = undefined;
+	return hook;
+}
+
+AsyncSeriesLoopHook.prototype = null;
+
+module.exports = AsyncSeriesLoopHook;