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/eslint-compat-utils/README.md

@@ -0,0 +1,48 @@
+# eslint-compat-utils
+
+***This package is still in the experimental stage.***
+
+Provides an API for ESLint custom rules that is compatible with the latest ESLint even when using older ESLint.
+
+## Installation
+
+```bash
+npm install eslint-compat-utils
+```
+
+## Usage
+
+```js
+const { getSourceCode } = require("eslint-compat-utils");
+module.exports = {
+  meta: { /* ... */ },
+  create(context) {
+    const sourceCode = getSourceCode(context)
+    return {
+      "Program"(node) {
+        const scope = sourceCode.getScope(node);
+      },
+    };
+  },
+}
+```
+
+### API
+
+#### `getSourceCode(context)`
+
+Returns an extended instance of `context.sourceCode` or the result of `context.getSourceCode()`. Extended instances can use new APIs such as `getScope(node)` even with old ESLint.
+
+#### `getCwd(context)`
+
+Gets the value of `context.cwd`, but for older ESLint it returns the result of `context.getCwd()`.
+Versions older than v6.6.0 return a value from the result of `process.cwd()`.
+
+#### `getFilename(context)`
+
+Gets the value of `context.filename`, but for older ESLint it returns the result of `context.getFilename()`.
+
+#### `getPhysicalFilename(context)`
+
+Gets the value of `context.physicalFilename`, but for older ESLint it returns the result of `context.getPhysicalFilename()`.
+Versions older than v7.28.0 return a value guessed from the result of `context.getFilename()`, but it may be incorrect.