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/jiti/lib/jiti-hooks.mjs

@@ -0,0 +1,124 @@
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+import { existsSync } from "node:fs";
+import { readFile } from "node:fs/promises";
+import { isBuiltin } from "node:module";
+import { createJiti } from "./jiti.mjs";
+
+let jiti;
+
+// https://nodejs.org/api/module.html#initialize
+export async function initialize() {
+  jiti = createJiti();
+}
+
+// https://nodejs.org/api/module.html#resolvespecifier-context-nextresolve
+export async function resolve(specifier, context, nextResolve) {
+  if (_shouldSkip(specifier)) {
+    return nextResolve(specifier, context);
+  }
+  const resolvedPath = jiti.esmResolve(specifier, {
+    parentURL: context?.parentURL,
+    conditions: context?.conditions,
+  });
+  return {
+    url: resolvedPath,
+    shortCircuit: true,
+  };
+}
+
+// https://nodejs.org/api/module.html#loadurl-context-nextload
+export async function load(url, context, nextLoad) {
+  if (_shouldSkip(url)) {
+    return nextLoad(url, context);
+  }
+
+  const filename = fileURLToPath(url);
+
+  if (url.endsWith(".js")) {
+    const pkg = await _findClosestPackageJson(dirname(filename));
+    if (pkg && pkg.type === "module") {
+      return nextLoad(url, context);
+    }
+  }
+
+  const rawSource = await readFile(filename, "utf8");
+
+  if (url.endsWith(".json")) {
+    const pkg = await _findClosestPackageJson(dirname(filename));
+    return pkg && pkg.type === "module"
+      ? {
+          source: `export default ${rawSource}`,
+          format: "module",
+          shortCircuit: true,
+        }
+      : {
+          source: `module.exports = ${rawSource}`,
+          format: "commonjs",
+          shortCircuit: true,
+        };
+  }
+
+  const transpiledSource = jiti.transform({
+    source: rawSource,
+    filename: filename,
+    ts: url.endsWith("ts"),
+    retainLines: true,
+    async: true,
+    jsx: jiti.options.jsx,
+  });
+
+  if (url.endsWith(".js") && !transpiledSource.includes("jitiImport")) {
+    return {
+      source: transpiledSource,
+      format: "commonjs",
+      shortCircuit: true,
+    };
+  }
+
+  return {
+    source: _wrapSource(transpiledSource, filename),
+    format: "module",
+    shortCircuit: true,
+  };
+}
+
+function _wrapSource(source, filename) {
+  const _jitiPath = new URL("jiti.mjs", import.meta.url).href;
+  return /*js*/ `import { createJiti as __createJiti__ } from ${JSON.stringify(_jitiPath)};async function _module(exports, require, module, __filename, __dirname, jitiImport) { ${source}\n};
+// GENERATED BY JITI ESM LOADER
+const filename = ${JSON.stringify(filename)};
+const dirname = ${JSON.stringify(dirname(filename))};
+const jiti = __createJiti__(filename);
+const module = { exports: Object.create(null) };
+await _module(module.exports, jiti, module, filename, dirname, jiti.import);
+if (module.exports && module.exports.__JITI_ERROR__) {
+  const { filename, line, column, code, message } =
+  module.exports.__JITI_ERROR__;
+  const loc = [filename, line, column].join(':');
+  const err = new Error(code + ": " + message + " " + loc);
+  Error.captureStackTrace(err, _module);
+  throw err;
+}
+export default module.exports;
+  `;
+}
+
+function _shouldSkip(url) {
+  return (
+    !jiti ||
+    url.endsWith(".mjs") ||
+    url.endsWith(".cjs") ||
+    (!url.startsWith("./") && !url.startsWith("file://")) ||
+    isBuiltin(url)
+  );
+}
+
+async function _findClosestPackageJson(dir) {
+  if (dir === "/") return null;
+  const packageJsonPath = join(dir, "package.json");
+  if (existsSync(packageJsonPath)) {
+    return JSON.parse(await readFile(packageJsonPath, "utf8"));
+  }
+  return _findClosestPackageJson(dirname(dir));
+}