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/svelte-toolbelt/package.json

@@ -0,0 +1,80 @@
+{
+  "name": "svelte-toolbelt",
+  "version": "0.10.6",
+  "funding": [
+    "https://github.com/sponsors/huntabyte"
+  ],
+  "exports": {
+    ".": {
+      "types": "./dist/index.d.ts",
+      "svelte": "./dist/index.js",
+      "default": "./dist/index.js"
+    }
+  },
+  "files": [
+    "dist",
+    "!dist/**/*.test.*",
+    "!dist/**/*.spec.*"
+  ],
+  "peerDependencies": {
+    "svelte": "^5.30.2"
+  },
+  "devDependencies": {
+    "@changesets/cli": "^2.27.1",
+    "@eslint/js": "^9.12.0",
+    "@sveltejs/adapter-auto": "^3.0.0",
+    "@sveltejs/kit": "^2.21.1",
+    "@sveltejs/package": "^2.3.11",
+    "@sveltejs/vite-plugin-svelte": "4.0.1",
+    "@svitejs/changesets-changelog-github-compact": "^1.1.0",
+    "@types/node": "^20.12.12",
+    "@typescript-eslint/eslint-plugin": "^8.10.0",
+    "@typescript-eslint/scope-manager": "^8.10.0",
+    "@typescript-eslint/utils": "^8.10.0",
+    "csstype": "^3.1.3",
+    "eslint": "^9.0.0",
+    "eslint-config-prettier": "^9.1.0",
+    "eslint-plugin-svelte": "^2.46.1",
+    "globals": "^15.11.0",
+    "jsdom": "^24.0.0",
+    "prettier": "^3.3.3",
+    "prettier-plugin-svelte": "^3.3.3",
+    "publint": "^0.1.9",
+    "svelte": "^5.30.2",
+    "svelte-check": "^4.2.1",
+    "svelte-eslint-parser": "^0.43.0",
+    "tslib": "^2.4.1",
+    "typescript": "^5.6.2",
+    "typescript-eslint": "^8.10.0",
+    "vite": "^5.4.8",
+    "vitest": "^2.1.2"
+  },
+  "dependencies": {
+    "clsx": "^2.1.1",
+    "runed": "^0.35.1",
+    "style-to-object": "^1.0.8"
+  },
+  "svelte": "./dist/index.js",
+  "types": "./dist/index.d.ts",
+  "type": "module",
+  "engines": {
+    "pnpm": ">=8.7.0",
+    "node": ">=18"
+  },
+  "packageManager": "pnpm@8.15.8",
+  "sideEffects": false,
+  "scripts": {
+    "dev": "pnpm --reporter append-only --color \"/dev:/\"",
+    "dev:svelte": "vite dev",
+    "dev:pkg": "svelte-package --watch",
+    "build": "vite build && npm run package",
+    "preview": "vite preview",
+    "package": "svelte-kit sync && svelte-package && publint",
+    "check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
+    "check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
+    "test": "vitest",
+    "lint": "prettier --check . && eslint .",
+    "format": "prettier --write .",
+    "ci:publish": "pnpm package && changeset publish"
+  }
+}