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/d3-dispatch/dist/d3-dispatch.js

@@ -0,0 +1,95 @@
+// https://d3js.org/d3-dispatch/ v3.0.1 Copyright 2010-2021 Mike Bostock
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+typeof define === 'function' && define.amd ? define(['exports'], factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, factory(global.d3 = global.d3 || {}));
+}(this, (function (exports) { 'use strict';
+
+var noop = {value: () => {}};
+
+function dispatch() {
+  for (var i = 0, n = arguments.length, _ = {}, t; i < n; ++i) {
+    if (!(t = arguments[i] + "") || (t in _) || /[\s.]/.test(t)) throw new Error("illegal type: " + t);
+    _[t] = [];
+  }
+  return new Dispatch(_);
+}
+
+function Dispatch(_) {
+  this._ = _;
+}
+
+function parseTypenames(typenames, types) {
+  return typenames.trim().split(/^|\s+/).map(function(t) {
+    var name = "", i = t.indexOf(".");
+    if (i >= 0) name = t.slice(i + 1), t = t.slice(0, i);
+    if (t && !types.hasOwnProperty(t)) throw new Error("unknown type: " + t);
+    return {type: t, name: name};
+  });
+}
+
+Dispatch.prototype = dispatch.prototype = {
+  constructor: Dispatch,
+  on: function(typename, callback) {
+    var _ = this._,
+        T = parseTypenames(typename + "", _),
+        t,
+        i = -1,
+        n = T.length;
+
+    // If no callback was specified, return the callback of the given type and name.
+    if (arguments.length < 2) {
+      while (++i < n) if ((t = (typename = T[i]).type) && (t = get(_[t], typename.name))) return t;
+      return;
+    }
+
+    // If a type was specified, set the callback for the given type and name.
+    // Otherwise, if a null callback was specified, remove callbacks of the given name.
+    if (callback != null && typeof callback !== "function") throw new Error("invalid callback: " + callback);
+    while (++i < n) {
+      if (t = (typename = T[i]).type) _[t] = set(_[t], typename.name, callback);
+      else if (callback == null) for (t in _) _[t] = set(_[t], typename.name, null);
+    }
+
+    return this;
+  },
+  copy: function() {
+    var copy = {}, _ = this._;
+    for (var t in _) copy[t] = _[t].slice();
+    return new Dispatch(copy);
+  },
+  call: function(type, that) {
+    if ((n = arguments.length - 2) > 0) for (var args = new Array(n), i = 0, n, t; i < n; ++i) args[i] = arguments[i + 2];
+    if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
+    for (t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
+  },
+  apply: function(type, that, args) {
+    if (!this._.hasOwnProperty(type)) throw new Error("unknown type: " + type);
+    for (var t = this._[type], i = 0, n = t.length; i < n; ++i) t[i].value.apply(that, args);
+  }
+};
+
+function get(type, name) {
+  for (var i = 0, n = type.length, c; i < n; ++i) {
+    if ((c = type[i]).name === name) {
+      return c.value;
+    }
+  }
+}
+
+function set(type, name, callback) {
+  for (var i = 0, n = type.length; i < n; ++i) {
+    if (type[i].name === name) {
+      type[i] = noop, type = type.slice(0, i).concat(type.slice(i + 1));
+      break;
+    }
+  }
+  if (callback != null) type.push({name: name, value: callback});
+  return type;
+}
+
+exports.dispatch = dispatch;
+
+Object.defineProperty(exports, '__esModule', { value: true });
+
+})));

web/node_modules/d3-dispatch/dist/d3-dispatch.min.js

@@ -0,0 +1,2 @@
+// https://d3js.org/d3-dispatch/ v3.0.1 Copyright 2010-2021 Mike Bostock
+!function(n,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((n="undefined"!=typeof globalThis?globalThis:n||self).d3=n.d3||{})}(this,(function(n){"use strict";var e={value:()=>{}};function t(){for(var n,e=0,t=arguments.length,o={};e<t;++e){if(!(n=arguments[e]+"")||n in o||/[\s.]/.test(n))throw new Error("illegal type: "+n);o[n]=[]}return new r(o)}function r(n){this._=n}function o(n,e){return n.trim().split(/^|\s+/).map((function(n){var t="",r=n.indexOf(".");if(r>=0&&(t=n.slice(r+1),n=n.slice(0,r)),n&&!e.hasOwnProperty(n))throw new Error("unknown type: "+n);return{type:n,name:t}}))}function i(n,e){for(var t,r=0,o=n.length;r<o;++r)if((t=n[r]).name===e)return t.value}function f(n,t,r){for(var o=0,i=n.length;o<i;++o)if(n[o].name===t){n[o]=e,n=n.slice(0,o).concat(n.slice(o+1));break}return null!=r&&n.push({name:t,value:r}),n}r.prototype=t.prototype={constructor:r,on:function(n,e){var t,r=this._,l=o(n+"",r),a=-1,u=l.length;if(!(arguments.length<2)){if(null!=e&&"function"!=typeof e)throw new Error("invalid callback: "+e);for(;++a<u;)if(t=(n=l[a]).type)r[t]=f(r[t],n.name,e);else if(null==e)for(t in r)r[t]=f(r[t],n.name,null);return this}for(;++a<u;)if((t=(n=l[a]).type)&&(t=i(r[t],n.name)))return t},copy:function(){var n={},e=this._;for(var t in e)n[t]=e[t].slice();return new r(n)},call:function(n,e){if((t=arguments.length-2)>0)for(var t,r,o=new Array(t),i=0;i<t;++i)o[i]=arguments[i+2];if(!this._.hasOwnProperty(n))throw new Error("unknown type: "+n);for(i=0,t=(r=this._[n]).length;i<t;++i)r[i].value.apply(e,o)},apply:function(n,e,t){if(!this._.hasOwnProperty(n))throw new Error("unknown type: "+n);for(var r=this._[n],o=0,i=r.length;o<i;++o)r[o].value.apply(e,t)}},n.dispatch=t,Object.defineProperty(n,"__esModule",{value:!0})}));