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/shared/option-utils.js

@@ -0,0 +1,63 @@
+/**
+ * @fileoverview Utilities to operate on option objects.
+ * @author Josh Goldberg
+ */
+
+"use strict";
+
+/**
+ * Determines whether any of input's properties are different
+ * from values that already exist in original.
+ * @template T
+ * @param {Partial<T>} input New value.
+ * @param {T} original Original value.
+ * @returns {boolean} Whether input includes an explicit difference.
+ */
+function containsDifferentProperty(input, original) {
+	if (input === original) {
+		return false;
+	}
+
+	if (
+		typeof input !== typeof original ||
+		Array.isArray(input) !== Array.isArray(original)
+	) {
+		return true;
+	}
+
+	if (Array.isArray(input)) {
+		return (
+			input.length !== original.length ||
+			input.some((value, i) =>
+				containsDifferentProperty(value, original[i]),
+			)
+		);
+	}
+
+	if (typeof input === "object") {
+		if (input === null || original === null) {
+			return true;
+		}
+
+		const inputKeys = Object.keys(input);
+		const originalKeys = Object.keys(original);
+
+		return (
+			inputKeys.length !== originalKeys.length ||
+			inputKeys.some(
+				inputKey =>
+					!Object.hasOwn(original, inputKey) ||
+					containsDifferentProperty(
+						input[inputKey],
+						original[inputKey],
+					),
+			)
+		);
+	}
+
+	return true;
+}
+
+module.exports = {
+	containsDifferentProperty,
+};