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/asynckit/serialOrdered.js

@@ -0,0 +1,75 @@
+var iterate    = require('./lib/iterate.js')
+  , initState  = require('./lib/state.js')
+  , terminator = require('./lib/terminator.js')
+  ;
+
+// Public API
+module.exports = serialOrdered;
+// sorting helpers
+module.exports.ascending  = ascending;
+module.exports.descending = descending;
+
+/**
+ * Runs iterator over provided sorted array elements in series
+ *
+ * @param   {array|object} list - array or object (named list) to iterate over
+ * @param   {function} iterator - iterator to run
+ * @param   {function} sortMethod - custom sort function
+ * @param   {function} callback - invoked when all elements processed
+ * @returns {function} - jobs terminator
+ */
+function serialOrdered(list, iterator, sortMethod, callback)
+{
+  var state = initState(list, sortMethod);
+
+  iterate(list, iterator, state, function iteratorHandler(error, result)
+  {
+    if (error)
+    {
+      callback(error, result);
+      return;
+    }
+
+    state.index++;
+
+    // are we there yet?
+    if (state.index < (state['keyedList'] || list).length)
+    {
+      iterate(list, iterator, state, iteratorHandler);
+      return;
+    }
+
+    // done here
+    callback(null, state.results);
+  });
+
+  return terminator.bind(state, callback);
+}
+
+/*
+ * -- Sort methods
+ */
+
+/**
+ * sort helper to sort array elements in ascending order
+ *
+ * @param   {mixed} a - an item to compare
+ * @param   {mixed} b - an item to compare
+ * @returns {number} - comparison result
+ */
+function ascending(a, b)
+{
+  return a < b ? -1 : a > b ? 1 : 0;
+}
+
+/**
+ * sort helper to sort array elements in descending order
+ *
+ * @param   {mixed} a - an item to compare
+ * @param   {mixed} b - an item to compare
+ * @returns {number} - comparison result
+ */
+function descending(a, b)
+{
+  return -1 * ascending(a, b);
+}