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/eslint/lib/rules/utils/lazy-loading-rule-map.js

@@ -0,0 +1,118 @@
+/**
+ * @fileoverview `Map` to load rules lazily.
+ * @author Toru Nagashima <https://github.com/mysticatea>
+ */
+"use strict";
+
+const debug = require("debug")("eslint:rules");
+
+/** @typedef {import("../../types").Rule.RuleModule} Rule */
+
+/**
+ * The `Map` object that loads each rule when it's accessed.
+ * @example
+ * const rules = new LazyLoadingRuleMap([
+ *     ["eqeqeq", () => require("eqeqeq")],
+ *     ["semi", () => require("semi")],
+ *     ["no-unused-vars", () => require("no-unused-vars")]
+ * ]);
+ *
+ * rules.get("semi"); // call `() => require("semi")` here.
+ *
+ * @extends {Map<string, Rule>}
+ */
+class LazyLoadingRuleMap extends Map {
+	/**
+	 * Initialize this map.
+	 * @param {Array<[string, function(): Rule]>} loaders The rule loaders.
+	 */
+	constructor(loaders) {
+		let remaining = loaders.length;
+
+		super(
+			debug.enabled
+				? loaders.map(([ruleId, load]) => {
+						let cache = null;
+
+						return [
+							ruleId,
+							() => {
+								if (!cache) {
+									debug(
+										"Loading rule %o (remaining=%d)",
+										ruleId,
+										--remaining,
+									);
+									cache = load();
+								}
+								return cache;
+							},
+						];
+					})
+				: loaders,
+		);
+
+		// `super(...iterable)` uses `this.set()`, so disable it here.
+		Object.defineProperty(LazyLoadingRuleMap.prototype, "set", {
+			configurable: true,
+			value: void 0,
+		});
+	}
+
+	/**
+	 * Get a rule.
+	 * Each rule will be loaded on the first access.
+	 * @param {string} ruleId The rule ID to get.
+	 * @returns {Rule|undefined} The rule.
+	 */
+	get(ruleId) {
+		const load = super.get(ruleId);
+
+		return load && load();
+	}
+
+	/**
+	 * Iterate rules.
+	 * @returns {IterableIterator<Rule>} Rules.
+	 */
+	*values() {
+		for (const load of super.values()) {
+			yield load();
+		}
+	}
+
+	/**
+	 * Iterate rules.
+	 * @returns {IterableIterator<[string, Rule]>} Rules.
+	 */
+	*entries() {
+		for (const [ruleId, load] of super.entries()) {
+			yield [ruleId, load()];
+		}
+	}
+
+	/**
+	 * Call a function with each rule.
+	 * @param {Function} callbackFn The callback function.
+	 * @param {any} [thisArg] The object to pass to `this` of the callback function.
+	 * @returns {void}
+	 */
+	forEach(callbackFn, thisArg) {
+		for (const [ruleId, load] of super.entries()) {
+			callbackFn.call(thisArg, load(), ruleId, this);
+		}
+	}
+}
+
+// Forbid mutation.
+Object.defineProperties(LazyLoadingRuleMap.prototype, {
+	clear: { configurable: true, value: void 0 },
+	delete: { configurable: true, value: void 0 },
+	[Symbol.iterator]: {
+		configurable: true,
+		writable: true,
+		value: LazyLoadingRuleMap.prototype.entries,
+	},
+});
+
+module.exports = { LazyLoadingRuleMap };