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/flatted/index.js

@@ -0,0 +1,155 @@
+self.Flatted = (function (exports) {
+  'use strict';
+
+  function _typeof(o) {
+    "@babel/helpers - typeof";
+
+    return _typeof = "function" == typeof Symbol && "symbol" == typeof Symbol.iterator ? function (o) {
+      return typeof o;
+    } : function (o) {
+      return o && "function" == typeof Symbol && o.constructor === Symbol && o !== Symbol.prototype ? "symbol" : typeof o;
+    }, _typeof(o);
+  }
+
+  /// <reference types="../types/index.d.ts" />
+
+  // (c) 2020-present Andrea Giammarchi
+
+  var $parse = JSON.parse,
+    $stringify = JSON.stringify;
+  var keys = Object.keys;
+  var Primitive = String; // it could be Number
+  var primitive = 'string'; // it could be 'number'
+
+  var ignore = {};
+  var object = 'object';
+  var noop = function noop(_, value) {
+    return value;
+  };
+  var primitives = function primitives(value) {
+    return value instanceof Primitive ? Primitive(value) : value;
+  };
+  var Primitives = function Primitives(_, value) {
+    return _typeof(value) === primitive ? new Primitive(value) : value;
+  };
+  var resolver = function resolver(input, lazy, parsed, $) {
+    return function (output) {
+      for (var ke = keys(output), length = ke.length, y = 0; y < length; y++) {
+        var k = ke[y];
+        var value = output[k];
+        if (value instanceof Primitive) {
+          var tmp = input[+value];
+          if (_typeof(tmp) === object && !parsed.has(tmp)) {
+            parsed.add(tmp);
+            output[k] = ignore;
+            lazy.push({
+              o: output,
+              k: k,
+              r: tmp
+            });
+          } else output[k] = $.call(output, k, tmp);
+        } else if (output[k] !== ignore) output[k] = $.call(output, k, value);
+      }
+      return output;
+    };
+  };
+  var set = function set(known, input, value) {
+    var index = Primitive(input.push(value) - 1);
+    known.set(value, index);
+    return index;
+  };
+
+  /**
+   * Converts a specialized flatted string into a JS value.
+   * @param {string} text
+   * @param {(this: any, key: string, value: any) => any} [reviver]
+   * @returns {any}
+   */
+  var parse = function parse(text, reviver) {
+    var input = $parse(text, Primitives).map(primitives);
+    var $ = reviver || noop;
+    var value = input[0];
+    if (_typeof(value) === object && value) {
+      var lazy = [];
+      var revive = resolver(input, lazy, new Set(), $);
+      value = revive(value);
+      var i = 0;
+      while (i < lazy.length) {
+        // it could be a lazy.shift() but that's costly
+        var _lazy$i = lazy[i++],
+          o = _lazy$i.o,
+          k = _lazy$i.k,
+          r = _lazy$i.r;
+        o[k] = $.call(o, k, revive(r));
+      }
+    }
+    return $.call({
+      '': value
+    }, '', value);
+  };
+
+  /**
+   * Converts a JS value into a specialized flatted string.
+   * @param {any} value
+   * @param {((this: any, key: string, value: any) => any) | (string | number)[] | null | undefined} [replacer]
+   * @param {string | number | undefined} [space]
+   * @returns {string}
+   */
+  var stringify = function stringify(value, replacer, space) {
+    var $ = replacer && _typeof(replacer) === object ? function (k, v) {
+      return k === '' || -1 < replacer.indexOf(k) ? v : void 0;
+    } : replacer || noop;
+    var known = new Map();
+    var input = [];
+    var output = [];
+    var i = +set(known, input, $.call({
+      '': value
+    }, '', value));
+    var firstRun = !i;
+    while (i < input.length) {
+      firstRun = true;
+      output[i] = $stringify(input[i++], replace, space);
+    }
+    return '[' + output.join(',') + ']';
+    function replace(key, value) {
+      if (firstRun) {
+        firstRun = !firstRun;
+        return value;
+      }
+      var after = $.call(this, key, value);
+      switch (_typeof(after)) {
+        case object:
+          if (after === null) return after;
+        case primitive:
+          return known.get(after) || set(known, input, after);
+      }
+      return after;
+    }
+  };
+
+  /**
+   * Converts a generic value into a JSON serializable object without losing recursion.
+   * @param {any} value
+   * @returns {any}
+   */
+  var toJSON = function toJSON(value) {
+    return $parse(stringify(value));
+  };
+
+  /**
+   * Converts a previously serialized object with recursion into a recursive one.
+   * @param {any} value
+   * @returns {any}
+   */
+  var fromJSON = function fromJSON(value) {
+    return parse($stringify(value));
+  };
+
+  exports.fromJSON = fromJSON;
+  exports.parse = parse;
+  exports.stringify = stringify;
+  exports.toJSON = toJSON;
+
+  return exports;
+
+})({});