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/.vite/deps/chunk-WDWK5IXO.js

@@ -0,0 +1,75 @@
+import {
+  Icon_default
+} from "./chunk-FDPVFO5P.js";
+import {
+  check_target,
+  hmr,
+  legacy_api,
+  rest_props,
+  spread_props
+} from "./chunk-3SEKS52A.js";
+import {
+  append,
+  comment
+} from "./chunk-YWNCLLEK.js";
+import {
+  FILENAME,
+  HMR,
+  add_svelte_meta,
+  first_child,
+  pop,
+  push
+} from "./chunk-IFIY7NGJ.js";
+
+// node_modules/@lucide/svelte/dist/icons/corner-down-left.svelte
+Corner_down_left[FILENAME] = "node_modules/@lucide/svelte/dist/icons/corner-down-left.svelte";
+var rest_excludes = /* @__PURE__ */ new Set(["$$slots", "$$events", "$$legacy"]);
+function Corner_down_left($$anchor, $$props) {
+  check_target(new.target);
+  push($$props, true, Corner_down_left);
+  let props = rest_props($$props, rest_excludes, "props");
+  const iconNode = [
+    ["path", { "d": "M20 4v7a4 4 0 0 1-4 4H4" }],
+    ["path", { "d": "m9 10-5 5 5 5" }]
+  ];
+  var $$exports = { ...legacy_api() };
+  var fragment = comment();
+  var node = first_child(fragment);
+  add_svelte_meta(
+    () => Icon_default(node, spread_props({ name: "corner-down-left" }, () => props, {
+      get iconNode() {
+        return iconNode;
+      }
+    })),
+    "component",
+    Corner_down_left,
+    23,
+    0,
+    { componentTag: "Icon" }
+  );
+  append($$anchor, fragment);
+  return pop($$exports);
+}
+if (import.meta.hot) {
+  Corner_down_left = hmr(Corner_down_left);
+  import.meta.hot.accept((module) => {
+    Corner_down_left[HMR].update(module.default);
+  });
+}
+var corner_down_left_default = Corner_down_left;
+
+export {
+  corner_down_left_default
+};
+/*! Bundled license information:
+
+@lucide/svelte/dist/icons/corner-down-left.js:
+  (**
+   * @file
+   * @license @lucide/svelte v1.28.0 - ISC
+   *
+   * This source code is licensed under the ISC license.
+   * See the LICENSE file in the root directory of this source tree.
+   *)
+*/
+//# sourceMappingURL=chunk-WDWK5IXO.js.map