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/strip-json-comments/index.js

@@ -0,0 +1,77 @@
+'use strict';
+const singleComment = Symbol('singleComment');
+const multiComment = Symbol('multiComment');
+const stripWithoutWhitespace = () => '';
+const stripWithWhitespace = (string, start, end) => string.slice(start, end).replace(/\S/g, ' ');
+
+const isEscaped = (jsonString, quotePosition) => {
+	let index = quotePosition - 1;
+	let backslashCount = 0;
+
+	while (jsonString[index] === '\\') {
+		index -= 1;
+		backslashCount += 1;
+	}
+
+	return Boolean(backslashCount % 2);
+};
+
+module.exports = (jsonString, options = {}) => {
+	if (typeof jsonString !== 'string') {
+		throw new TypeError(`Expected argument \`jsonString\` to be a \`string\`, got \`${typeof jsonString}\``);
+	}
+
+	const strip = options.whitespace === false ? stripWithoutWhitespace : stripWithWhitespace;
+
+	let insideString = false;
+	let insideComment = false;
+	let offset = 0;
+	let result = '';
+
+	for (let i = 0; i < jsonString.length; i++) {
+		const currentCharacter = jsonString[i];
+		const nextCharacter = jsonString[i + 1];
+
+		if (!insideComment && currentCharacter === '"') {
+			const escaped = isEscaped(jsonString, i);
+			if (!escaped) {
+				insideString = !insideString;
+			}
+		}
+
+		if (insideString) {
+			continue;
+		}
+
+		if (!insideComment && currentCharacter + nextCharacter === '//') {
+			result += jsonString.slice(offset, i);
+			offset = i;
+			insideComment = singleComment;
+			i++;
+		} else if (insideComment === singleComment && currentCharacter + nextCharacter === '\r\n') {
+			i++;
+			insideComment = false;
+			result += strip(jsonString, offset, i);
+			offset = i;
+			continue;
+		} else if (insideComment === singleComment && currentCharacter === '\n') {
+			insideComment = false;
+			result += strip(jsonString, offset, i);
+			offset = i;
+		} else if (!insideComment && currentCharacter + nextCharacter === '/*') {
+			result += jsonString.slice(offset, i);
+			offset = i;
+			insideComment = multiComment;
+			i++;
+			continue;
+		} else if (insideComment === multiComment && currentCharacter + nextCharacter === '*/') {
+			i++;
+			insideComment = false;
+			result += strip(jsonString, offset, i + 1);
+			offset = i + 1;
+			continue;
+		}
+	}
+
+	return result + (insideComment ? strip(jsonString.slice(offset)) : jsonString.slice(offset));
+};