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-plugin-svelte/lib/rules/require-stores-init.js

@@ -0,0 +1,35 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const utils_1 = require("../utils");
+const svelte_store_1 = require("./reference-helpers/svelte-store");
+exports.default = (0, utils_1.createRule)('require-stores-init', {
+    meta: {
+        docs: {
+            description: 'require initial value in store',
+            category: 'Best Practices',
+            recommended: false
+        },
+        schema: [],
+        messages: {
+            storeDefaultValue: `Always set a default value for svelte stores.`
+        },
+        type: 'suggestion'
+    },
+    create(context) {
+        return {
+            Program() {
+                for (const { node, name } of (0, svelte_store_1.extractStoreReferences)(context)) {
+                    const minArgs = name === 'writable' || name === 'readable' ? 1 : name === 'derived' ? 3 : 0;
+                    if (node.arguments.length >= minArgs ||
+                        node.arguments.some((arg) => arg.type === 'SpreadElement')) {
+                        continue;
+                    }
+                    context.report({
+                        node,
+                        messageId: 'storeDefaultValue'
+                    });
+                }
+            }
+        };
+    }
+});