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/word-wrap/index.js

@@ -0,0 +1,61 @@
+/*!
+ * word-wrap <https://github.com/jonschlinkert/word-wrap>
+ *
+ * Copyright (c) 2014-2023, Jon Schlinkert.
+ * Released under the MIT License.
+ */
+
+function trimEnd(str) {
+  let lastCharPos = str.length - 1;
+  let lastChar = str[lastCharPos];
+  while(lastChar === ' ' || lastChar === '\t') {
+    lastChar = str[--lastCharPos];
+  }
+  return str.substring(0, lastCharPos + 1);
+}
+
+function trimTabAndSpaces(str) {
+  const lines = str.split('\n');
+  const trimmedLines = lines.map((line) => trimEnd(line));
+  return trimmedLines.join('\n');
+}
+
+module.exports = function(str, options) {
+  options = options || {};
+  if (str == null) {
+    return str;
+  }
+
+  var width = options.width || 50;
+  var indent = (typeof options.indent === 'string')
+    ? options.indent
+    : '  ';
+
+  var newline = options.newline || '\n' + indent;
+  var escape = typeof options.escape === 'function'
+    ? options.escape
+    : identity;
+
+  var regexString = '.{1,' + width + '}';
+  if (options.cut !== true) {
+    regexString += '([\\s\u200B]+|$)|[^\\s\u200B]+?([\\s\u200B]+|$)';
+  }
+
+  var re = new RegExp(regexString, 'g');
+  var lines = str.match(re) || [];
+  var result = indent + lines.map(function(line) {
+    if (line.slice(-1) === '\n') {
+      line = line.slice(0, line.length - 1);
+    }
+    return escape(line);
+  }).join(newline);
+
+  if (options.trim === true) {
+    result = trimTabAndSpaces(result);
+  }
+  return result;
+};
+
+function identity(str) {
+  return str;
+}