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/no-dupe-keys.js

@@ -0,0 +1,165 @@
+/**
+ * @fileoverview Rule to flag use of duplicate keys in an object.
+ * @author Ian Christian Myers
+ */
+
+"use strict";
+
+//------------------------------------------------------------------------------
+// Requirements
+//------------------------------------------------------------------------------
+
+const astUtils = require("./utils/ast-utils");
+
+//------------------------------------------------------------------------------
+// Helpers
+//------------------------------------------------------------------------------
+
+const GET_KIND = /^(?:init|get)$/u;
+const SET_KIND = /^(?:init|set)$/u;
+
+/**
+ * The class which stores properties' information of an object.
+ */
+class ObjectInfo {
+	/**
+	 * @param {ObjectInfo|null} upper The information of the outer object.
+	 * @param {ASTNode} node The ObjectExpression node of this information.
+	 */
+	constructor(upper, node) {
+		this.upper = upper;
+		this.node = node;
+		this.properties = new Map();
+	}
+
+	/**
+	 * Gets the information of the given Property node.
+	 * @param {ASTNode} node The Property node to get.
+	 * @returns {{get: boolean, set: boolean}} The information of the property.
+	 */
+	getPropertyInfo(node) {
+		const name = astUtils.getStaticPropertyName(node);
+
+		if (!this.properties.has(name)) {
+			this.properties.set(name, { get: false, set: false });
+		}
+		return this.properties.get(name);
+	}
+
+	/**
+	 * Checks whether the given property has been defined already or not.
+	 * @param {ASTNode} node The Property node to check.
+	 * @returns {boolean} `true` if the property has been defined.
+	 */
+	isPropertyDefined(node) {
+		const entry = this.getPropertyInfo(node);
+
+		return (
+			(GET_KIND.test(node.kind) && entry.get) ||
+			(SET_KIND.test(node.kind) && entry.set)
+		);
+	}
+
+	/**
+	 * Defines the given property.
+	 * @param {ASTNode} node The Property node to define.
+	 * @returns {void}
+	 */
+	defineProperty(node) {
+		const entry = this.getPropertyInfo(node);
+
+		if (GET_KIND.test(node.kind)) {
+			entry.get = true;
+		}
+		if (SET_KIND.test(node.kind)) {
+			entry.set = true;
+		}
+	}
+}
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../types').Rule.RuleModule} */
+module.exports = {
+	meta: {
+		type: "problem",
+
+		docs: {
+			description: "Disallow duplicate keys in object literals",
+			recommended: true,
+			url: "https://eslint.org/docs/latest/rules/no-dupe-keys",
+		},
+
+		schema: [],
+
+		messages: {
+			unexpected: "Duplicate key '{{name}}'.",
+		},
+	},
+
+	create(context) {
+		let info = null;
+
+		return {
+			ObjectExpression(node) {
+				info = new ObjectInfo(info, node);
+			},
+			"ObjectExpression:exit"() {
+				info = info.upper;
+			},
+
+			Property(node) {
+				const name = astUtils.getStaticPropertyName(node);
+
+				// Skip destructuring.
+				if (node.parent.type !== "ObjectExpression") {
+					return;
+				}
+
+				// Skip if the name is not static.
+				if (name === null) {
+					return;
+				}
+
+				/*
+				 * Skip if the property node is a proto setter.
+				 * Proto setter is a special syntax that sets
+				 * object's prototype instead of creating a property.
+				 * It can be in one of the following forms:
+				 *
+				 *    __proto__: <expression>
+				 *    '__proto__': <expression>
+				 *    "__proto__": <expression>
+				 *
+				 * Duplicate proto setters produce parsing errors,
+				 * so we can just skip them to not interfere with
+				 * regular properties named "__proto__".
+				 */
+				if (
+					name === "__proto__" &&
+					node.kind === "init" &&
+					!node.computed &&
+					!node.shorthand &&
+					!node.method
+				) {
+					return;
+				}
+
+				// Reports if the name is defined already.
+				if (info.isPropertyDefined(node)) {
+					context.report({
+						node: info.node,
+						loc: node.key.loc,
+						messageId: "unexpected",
+						data: { name },
+					});
+				}
+
+				// Update info.
+				info.defineProperty(node);
+			},
+		};
+	},
+};