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/semver/functions/cmp.js

@@ -0,0 +1,54 @@
+'use strict'
+
+const eq = require('./eq')
+const neq = require('./neq')
+const gt = require('./gt')
+const gte = require('./gte')
+const lt = require('./lt')
+const lte = require('./lte')
+
+const cmp = (a, op, b, loose) => {
+  switch (op) {
+    case '===':
+      if (typeof a === 'object') {
+        a = a.version
+      }
+      if (typeof b === 'object') {
+        b = b.version
+      }
+      return a === b
+
+    case '!==':
+      if (typeof a === 'object') {
+        a = a.version
+      }
+      if (typeof b === 'object') {
+        b = b.version
+      }
+      return a !== b
+
+    case '':
+    case '=':
+    case '==':
+      return eq(a, b, loose)
+
+    case '!=':
+      return neq(a, b, loose)
+
+    case '>':
+      return gt(a, b, loose)
+
+    case '>=':
+      return gte(a, b, loose)
+
+    case '<':
+      return lt(a, b, loose)
+
+    case '<=':
+      return lte(a, b, loose)
+
+    default:
+      throw new TypeError(`Invalid operator: ${op}`)
+  }
+}
+module.exports = cmp