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/parent-module/index.js

@@ -0,0 +1,37 @@
+'use strict';
+const callsites = require('callsites');
+
+module.exports = filepath => {
+	const stacks = callsites();
+
+	if (!filepath) {
+		return stacks[2].getFileName();
+	}
+
+	let seenVal = false;
+
+	// Skip the first stack as it's this function
+	stacks.shift();
+
+	for (const stack of stacks) {
+		const parentFilepath = stack.getFileName();
+
+		if (typeof parentFilepath !== 'string') {
+			continue;
+		}
+
+		if (parentFilepath === filepath) {
+			seenVal = true;
+			continue;
+		}
+
+		// Skip native modules
+		if (parentFilepath === 'module.js') {
+			continue;
+		}
+
+		if (seenVal && parentFilepath !== filepath) {
+			return parentFilepath;
+		}
+	}
+};

web/node_modules/parent-module/license

@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

web/node_modules/parent-module/package.json

@@ -0,0 +1,46 @@
+{
+	"name": "parent-module",
+	"version": "1.0.1",
+	"description": "Get the path of the parent module",
+	"license": "MIT",
+	"repository": "sindresorhus/parent-module",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=6"
+	},
+	"scripts": {
+		"test": "xo && ava"
+	},
+	"files": [
+		"index.js"
+	],
+	"keywords": [
+		"parent",
+		"module",
+		"package",
+		"pkg",
+		"caller",
+		"calling",
+		"module",
+		"path",
+		"callsites",
+		"callsite",
+		"stacktrace",
+		"stack",
+		"trace",
+		"function",
+		"file"
+	],
+	"dependencies": {
+		"callsites": "^3.0.0"
+	},
+	"devDependencies": {
+		"ava": "^1.4.1",
+		"execa": "^1.0.0",
+		"xo": "^0.24.0"
+	}
+}

web/node_modules/parent-module/readme.md

@@ -0,0 +1,67 @@
+# parent-module [![Build Status](https://travis-ci.org/sindresorhus/parent-module.svg?branch=master)](https://travis-ci.org/sindresorhus/parent-module)
+
+> Get the path of the parent module
+
+Node.js exposes `module.parent`, but it only gives you the first cached parent, which is not necessarily the actual parent.
+
+
+## Install
+
+```
+$ npm install parent-module
+```
+
+
+## Usage
+
+```js
+// bar.js
+const parentModule = require('parent-module');
+
+module.exports = () => {
+	console.log(parentModule());
+	//=> '/Users/sindresorhus/dev/unicorn/foo.js'
+};
+```
+
+```js
+// foo.js
+const bar = require('./bar');
+
+bar();
+```
+
+
+## API
+
+### parentModule([filepath])
+
+By default, it will return the path of the immediate parent.
+
+#### filepath
+
+Type: `string`<br>
+Default: [`__filename`](https://nodejs.org/api/globals.html#globals_filename)
+
+Filepath of the module of which to get the parent path.
+
+Useful if you want it to work [multiple module levels down](https://github.com/sindresorhus/parent-module/tree/master/fixtures/filepath).
+
+
+## Tip
+
+Combine it with [`read-pkg-up`](https://github.com/sindresorhus/read-pkg-up) to read the package.json of the parent module.
+
+```js
+const path = require('path');
+const readPkgUp = require('read-pkg-up');
+const parentModule = require('parent-module');
+
+console.log(readPkgUp.sync({cwd: path.dirname(parentModule())}).pkg);
+//=> {name: 'chalk', version: '1.0.0', …}
+```
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)