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/shorthand-attribute.js

@@ -0,0 +1,76 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const utils_1 = require("../utils");
+const ast_utils_1 = require("../utils/ast-utils");
+const compat_1 = require("../utils/compat");
+exports.default = (0, utils_1.createRule)('shorthand-attribute', {
+    meta: {
+        docs: {
+            description: 'enforce use of shorthand syntax in attribute',
+            category: 'Stylistic Issues',
+            recommended: false,
+            conflictWithPrettier: true
+        },
+        fixable: 'code',
+        schema: [
+            {
+                type: 'object',
+                properties: {
+                    prefer: { enum: ['always', 'never'] }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            expectedShorthand: 'Expected shorthand attribute.',
+            expectedRegular: 'Expected regular attribute syntax.'
+        },
+        type: 'layout' // "problem", or "layout",
+    },
+    create(context) {
+        const sourceCode = (0, compat_1.getSourceCode)(context);
+        const always = context.options[0]?.prefer !== 'never';
+        return always
+            ? {
+                SvelteAttribute(node) {
+                    if (node.value.length !== 1) {
+                        return;
+                    }
+                    const value = node.value[0];
+                    if (value.type !== 'SvelteMustacheTag' || value.expression.type !== 'Identifier') {
+                        return;
+                    }
+                    if (node.key.name === value.expression.name) {
+                        context.report({
+                            node,
+                            messageId: 'expectedShorthand',
+                            *fix(fixer) {
+                                const quoteAndRange = (0, ast_utils_1.getAttributeValueQuoteAndRange)(node, sourceCode);
+                                if (!quoteAndRange) {
+                                    return;
+                                }
+                                if (quoteAndRange.quote === 'double' || quoteAndRange.quote === 'single') {
+                                    yield fixer.removeRange([node.range[0], quoteAndRange.firstToken.range[1]]);
+                                    yield fixer.remove(quoteAndRange.lastToken);
+                                }
+                                else {
+                                    yield fixer.removeRange([node.range[0], quoteAndRange.range[0]]);
+                                }
+                            }
+                        });
+                    }
+                }
+            }
+            : {
+                SvelteShorthandAttribute(node) {
+                    context.report({
+                        node,
+                        messageId: 'expectedRegular',
+                        fix(fixer) {
+                            return fixer.insertTextBefore(node, `${node.key.name}=`);
+                        }
+                    });
+                }
+            };
+    }
+});