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/prettier-plugin-svelte/package.json

@@ -0,0 +1,63 @@
+{
+    "name": "prettier-plugin-svelte",
+    "version": "3.5.2",
+    "description": "Svelte plugin for prettier",
+    "main": "plugin.js",
+    "files": [
+        "plugin.js",
+        "plugin.js.map",
+        "browser.js",
+        "index.d.ts"
+    ],
+    "types": "./index.d.ts",
+    "exports": {
+        ".": {
+            "types": "./index.d.ts",
+            "default": "./plugin.js"
+        },
+        "./browser": "./browser.js",
+        "./package.json": "./package.json"
+    },
+    "scripts": {
+        "build": "rollup -c",
+        "check": "tsc --noEmit",
+        "check:watch": "tsc --noEmit --watch",
+        "lint": "prettier --check .",
+        "format": "prettier --write .",
+        "test": "ava",
+        "prepare": "npm run build",
+        "prepublishOnly": "npm test"
+    },
+    "repository": {
+        "type": "git",
+        "url": "git+https://github.com/sveltejs/prettier-plugin-svelte.git"
+    },
+    "keywords": [
+        "prettier",
+        "svelte"
+    ],
+    "author": "James Birtles <jameshbirtles@gmail.com>",
+    "license": "MIT",
+    "bugs": {
+        "url": "https://github.com/sveltejs/prettier-plugin-svelte/issues"
+    },
+    "homepage": "https://github.com/sveltejs/prettier-plugin-svelte#readme",
+    "devDependencies": {
+        "@rollup/plugin-alias": "^5.1.0",
+        "@rollup/plugin-commonjs": "14.0.0",
+        "@rollup/plugin-node-resolve": "11.0.1",
+        "@types/node": "^14.0.0",
+        "ava": "3.15.0",
+        "prettier": "^3.0.0",
+        "rollup": "2.36.0",
+        "rollup-plugin-typescript": "1.0.1",
+        "svelte": "^4.2.7",
+        "ts-node": "^10.1.1",
+        "tslib": "^2.6.0",
+        "typescript": "5.1.3"
+    },
+    "peerDependencies": {
+        "prettier": "^3.0.0",
+        "svelte": "^3.2.0 || ^4.0.0-next.0 || ^5.0.0-next.0"
+    }
+}