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/ajv/scripts/bundle.js

@@ -0,0 +1,61 @@
+'use strict';
+
+var fs = require('fs')
+  , path = require('path')
+  , browserify = require('browserify')
+  , uglify = require('uglify-js');
+
+var pkg = process.argv[2]
+  , standalone = process.argv[3]
+  , compress = process.argv[4];
+
+var packageDir = path.join(__dirname, '..');
+if (pkg != '.') packageDir = path.join(packageDir, 'node_modules', pkg);
+
+var json = require(path.join(packageDir, 'package.json'));
+
+var distDir = path.join(__dirname, '..', 'dist');
+if (!fs.existsSync(distDir)) fs.mkdirSync(distDir);
+
+var bOpts = {};
+if (standalone) bOpts.standalone = standalone;
+
+browserify(bOpts)
+.require(path.join(packageDir, json.main), {expose: json.name})
+.bundle(function (err, buf) {
+  if (err) {
+    console.error('browserify error:', err);
+    process.exit(1);
+  }
+
+  var outputFile = path.join(distDir, json.name);
+  var uglifyOpts = {
+    warnings: true,
+    compress: {},
+    output: {
+      preamble: '/* ' + json.name + ' ' + json.version + ': ' + json.description + ' */'
+    }
+  };
+  if (compress) {
+    var compressOpts = compress.split(',');
+    for (var i=0, il = compressOpts.length; i<il; ++i) {
+      var pair = compressOpts[i].split('=');
+      uglifyOpts.compress[pair[0]] = pair.length < 1 || pair[1] != 'false';
+    }
+  }
+  if (standalone) {
+    uglifyOpts.sourceMap = {
+      filename: json.name + '.min.js',
+      url: json.name + '.min.js.map'
+    };
+  }
+
+  var result = uglify.minify(buf.toString(), uglifyOpts);
+  fs.writeFileSync(outputFile + '.min.js', result.code);
+  if (result.map) fs.writeFileSync(outputFile + '.min.js.map', result.map);
+  if (standalone) fs.writeFileSync(outputFile + '.bundle.js', buf);
+  if (result.warnings) {
+    for (var j=0, jl = result.warnings.length; j<jl; ++j)
+      console.warn('UglifyJS warning:', result.warnings[j]);
+  }
+});