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/no-trailing-spaces.js

@@ -0,0 +1,98 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const utils_1 = require("../utils");
+const compat_1 = require("../utils/compat");
+exports.default = (0, utils_1.createRule)('no-trailing-spaces', {
+    meta: {
+        type: 'layout',
+        docs: {
+            description: 'disallow trailing whitespace at the end of lines',
+            category: 'Extension Rules',
+            recommended: false,
+            extensionRule: 'no-trailing-spaces',
+            conflictWithPrettier: true
+        },
+        fixable: 'whitespace',
+        schema: [
+            {
+                type: 'object',
+                properties: {
+                    skipBlankLines: { type: 'boolean' },
+                    ignoreComments: { type: 'boolean' }
+                },
+                additionalProperties: false
+            }
+        ],
+        messages: {
+            trailingSpace: 'Trailing spaces not allowed.'
+        }
+    },
+    create(context) {
+        const options = context.options[0];
+        const skipBlankLines = options?.skipBlankLines || false;
+        const ignoreComments = options?.ignoreComments || false;
+        const sourceCode = (0, compat_1.getSourceCode)(context);
+        const ignoreLineNumbers = new Set();
+        if (ignoreComments) {
+            for (const { type, loc } of sourceCode.getAllComments()) {
+                const endLine = type === 'Block' ? loc.end.line - 1 : loc.end.line;
+                for (let i = loc.start.line; i <= endLine; i++) {
+                    ignoreLineNumbers.add(i);
+                }
+            }
+        }
+        /**
+         * Reports a given location.
+         */
+        function report(loc) {
+            context.report({
+                loc,
+                messageId: 'trailingSpace',
+                fix(fixer) {
+                    return fixer.removeRange([
+                        sourceCode.getIndexFromLoc(loc.start),
+                        sourceCode.getIndexFromLoc(loc.end)
+                    ]);
+                }
+            });
+        }
+        /**
+         * Collects the location of the given node as the ignore line numbers.
+         */
+        function collectIgnoreLineNumbers({ loc }) {
+            const endLine = loc.end.line - 1;
+            for (let i = loc.start.line; i <= endLine; i++) {
+                ignoreLineNumbers.add(i);
+            }
+        }
+        return {
+            TemplateElement: collectIgnoreLineNumbers,
+            ...(ignoreComments
+                ? {
+                    SvelteHTMLComment: collectIgnoreLineNumbers
+                }
+                : {}),
+            'Program:exit'() {
+                const lines = sourceCode.lines;
+                for (let lineIndex = 0; lineIndex < lines.length; lineIndex++) {
+                    const line = lines[lineIndex];
+                    if (skipBlankLines && !line.trim()) {
+                        continue;
+                    }
+                    const lineNumber = lineIndex + 1;
+                    if (ignoreLineNumbers.has(lineNumber)) {
+                        continue;
+                    }
+                    const trimmed = line.trimEnd();
+                    if (trimmed === line) {
+                        continue;
+                    }
+                    report({
+                        start: { line: lineNumber, column: trimmed.length },
+                        end: { line: lineNumber, column: line.length }
+                    });
+                }
+            }
+        };
+    }
+});