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/json-buffer/test/index.js

@@ -0,0 +1,63 @@
+
+var test = require('tape')
+var _JSON = require('../')
+
+function clone (o) {
+  return JSON.parse(JSON.stringify(o))
+}
+
+var examples = {
+  simple: { foo: [], bar: {}, baz: Buffer.from('some binary data') },
+  just_buffer: Buffer.from('JUST A BUFFER'),
+  all_types: {
+    string:'hello',
+    number: 3145,
+    null: null,
+    object: {},
+    array: [],
+    boolean: true,
+    boolean2: false
+  },
+  foo: Buffer.from('foo'),
+  foo2: Buffer.from('foo2'),
+  escape: {
+    buffer: Buffer.from('x'),
+    string: _JSON.stringify(Buffer.from('x'))
+  },
+  escape2: {
+    buffer: Buffer.from('x'),
+    string: ':base64:'+ Buffer.from('x').toString('base64')
+  },
+  undefined: {
+    empty: undefined, test: true
+  },
+  undefined2: {
+    first: 1, empty: undefined, test: true
+  },
+  undefinedArray: {
+    array: [undefined, 1, 'two']
+  },
+  fn: {
+    fn: function () {}    
+  },
+  undefined: undefined
+}
+
+for(k in examples)
+(function (value, k) { 
+  test(k, function (t) {
+    var s = _JSON.stringify(value)
+    console.log('parse', s)
+    if(JSON.stringify(value) !== undefined) {
+      console.log(s)
+      var _value = _JSON.parse(s)
+      t.deepEqual(clone(_value), clone(value))
+    }
+    else
+      t.equal(s, undefined)
+    t.end()
+  })
+})(examples[k], k)
+
+
+