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/@sveltejs/vite-plugin-svelte/package.json

@@ -0,0 +1,61 @@
+{
+  "name": "@sveltejs/vite-plugin-svelte",
+  "version": "5.1.1",
+  "license": "MIT",
+  "author": "dominikg",
+  "files": [
+    "src",
+    "types"
+  ],
+  "type": "module",
+  "types": "types/index.d.ts",
+  "exports": {
+    ".": {
+      "import": {
+        "types": "./types/index.d.ts",
+        "default": "./src/index.js"
+      }
+    }
+  },
+  "engines": {
+    "node": "^18.0.0 || ^20.0.0 || >=22"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/sveltejs/vite-plugin-svelte.git",
+    "directory": "packages/vite-plugin-svelte"
+  },
+  "keywords": [
+    "vite-plugin",
+    "vite plugin",
+    "vite",
+    "svelte"
+  ],
+  "bugs": {
+    "url": "https://github.com/sveltejs/vite-plugin-svelte/issues"
+  },
+  "homepage": "https://github.com/sveltejs/vite-plugin-svelte#readme",
+  "dependencies": {
+    "@sveltejs/vite-plugin-svelte-inspector": "^4.0.1",
+    "debug": "^4.4.1",
+    "deepmerge": "^4.3.1",
+    "kleur": "^4.1.5",
+    "magic-string": "^0.30.17",
+    "vitefu": "^1.0.6"
+  },
+  "peerDependencies": {
+    "svelte": "^5.0.0",
+    "vite": "^6.0.0"
+  },
+  "devDependencies": {
+    "@types/debug": "^4.1.12",
+    "sass": "^1.89.0",
+    "svelte": "^5.33.3",
+    "vite": "^6.3.5"
+  },
+  "scripts": {
+    "check:publint": "publint --strict",
+    "check:types": "tsc --noEmit",
+    "generate:types": "dts-buddy -m \"@sveltejs/vite-plugin-svelte:src/public.d.ts\""
+  }
+}