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/derived-has-same-inputs-outputs.js

@@ -0,0 +1,90 @@
+"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)('derived-has-same-inputs-outputs', {
+    meta: {
+        docs: {
+            description: 'derived store should use same variable names between values and callback',
+            category: 'Stylistic Issues',
+            recommended: false,
+            conflictWithPrettier: false
+        },
+        schema: [],
+        messages: {
+            unexpected: "The argument name should be '{{name}}'."
+        },
+        type: 'suggestion'
+    },
+    create(context) {
+        /** check node type */
+        function isIdentifierOrArrayExpression(node) {
+            return ['Identifier', 'ArrayExpression'].includes(node.type);
+        }
+        /** check node type */
+        function isFunctionExpression(node) {
+            return ['ArrowFunctionExpression', 'FunctionExpression'].includes(node.type);
+        }
+        /**
+         * Check for identifier type.
+         * e.g. derived(a, ($a) => {});
+         */
+        function checkIdentifier(context, args, fn) {
+            const fnParam = fn.params[0];
+            if (fnParam.type !== 'Identifier')
+                return;
+            const expectedName = `$${args.name}`;
+            if (expectedName !== fnParam.name) {
+                context.report({
+                    node: fn,
+                    loc: fnParam.loc,
+                    messageId: 'unexpected',
+                    data: { name: expectedName }
+                });
+            }
+        }
+        /**
+         * Check for array type.
+         * e.g. derived([ a, b ], ([ $a, $b ]) => {})
+         */
+        function checkArrayExpression(context, args, fn) {
+            const fnParam = fn.params[0];
+            if (fnParam.type !== 'ArrayPattern')
+                return;
+            const argNames = args.elements.map((element) => {
+                return element && element.type === 'Identifier' ? element.name : null;
+            });
+            fnParam.elements.forEach((element, index) => {
+                const argName = argNames[index];
+                if (element && element.type === 'Identifier' && argName) {
+                    const expectedName = `$${argName}`;
+                    if (expectedName !== element.name) {
+                        context.report({
+                            node: fn,
+                            loc: element.loc,
+                            messageId: 'unexpected',
+                            data: { name: expectedName }
+                        });
+                    }
+                }
+            });
+        }
+        return {
+            Program() {
+                for (const { node } of (0, svelte_store_1.extractStoreReferences)(context, ['derived'])) {
+                    const [args, fn] = node.arguments;
+                    if (!args || !isIdentifierOrArrayExpression(args))
+                        continue;
+                    if (!fn || !isFunctionExpression(fn))
+                        continue;
+                    if (!fn.params || fn.params.length === 0)
+                        continue;
+                    if (args.type === 'Identifier')
+                        checkIdentifier(context, args, fn);
+                    else
+                        checkArrayExpression(context, args, fn);
+                }
+            }
+        };
+    }
+});