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/lib/rules/eol-last.js

@@ -0,0 +1,135 @@
+/**
+ * @fileoverview Require or disallow newline at the end of files
+ * @author Nodeca Team <https://github.com/nodeca>
+ * @deprecated in ESLint v8.53.0
+ */
+"use strict";
+
+//------------------------------------------------------------------------------
+// Rule Definition
+//------------------------------------------------------------------------------
+
+/** @type {import('../types').Rule.RuleModule} */
+module.exports = {
+	meta: {
+		deprecated: {
+			message: "Formatting rules are being moved out of ESLint core.",
+			url: "https://eslint.org/blog/2023/10/deprecating-formatting-rules/",
+			deprecatedSince: "8.53.0",
+			availableUntil: "11.0.0",
+			replacedBy: [
+				{
+					message:
+						"ESLint Stylistic now maintains deprecated stylistic core rules.",
+					url: "https://eslint.style/guide/migration",
+					plugin: {
+						name: "@stylistic/eslint-plugin",
+						url: "https://eslint.style",
+					},
+					rule: {
+						name: "eol-last",
+						url: "https://eslint.style/rules/eol-last",
+					},
+				},
+			],
+		},
+		type: "layout",
+
+		docs: {
+			description: "Require or disallow newline at the end of files",
+			recommended: false,
+			url: "https://eslint.org/docs/latest/rules/eol-last",
+		},
+
+		fixable: "whitespace",
+
+		schema: [
+			{
+				enum: ["always", "never", "unix", "windows"],
+			},
+		],
+
+		messages: {
+			missing: "Newline required at end of file but not found.",
+			unexpected: "Newline not allowed at end of file.",
+		},
+	},
+	create(context) {
+		//--------------------------------------------------------------------------
+		// Public
+		//--------------------------------------------------------------------------
+
+		return {
+			Program: function checkBadEOF(node) {
+				const sourceCode = context.sourceCode,
+					src = sourceCode.getText(),
+					lastLine = sourceCode.lines.at(-1),
+					location = {
+						column: lastLine.length,
+						line: sourceCode.lines.length,
+					},
+					LF = "\n",
+					CRLF = `\r${LF}`,
+					endsWithNewline = src.endsWith(LF);
+
+				/*
+				 * Empty source is always valid: No content in file so we don't
+				 * need to lint for a newline on the last line of content.
+				 */
+				if (!src.length) {
+					return;
+				}
+
+				let mode = context.options[0] || "always",
+					appendCRLF = false;
+
+				if (mode === "unix") {
+					// `"unix"` should behave exactly as `"always"`
+					mode = "always";
+				}
+				if (mode === "windows") {
+					// `"windows"` should behave exactly as `"always"`, but append CRLF in the fixer for backwards compatibility
+					mode = "always";
+					appendCRLF = true;
+				}
+				if (mode === "always" && !endsWithNewline) {
+					// File is not newline-terminated, but should be
+					context.report({
+						node,
+						loc: location,
+						messageId: "missing",
+						fix(fixer) {
+							return fixer.insertTextAfterRange(
+								[0, src.length],
+								appendCRLF ? CRLF : LF,
+							);
+						},
+					});
+				} else if (mode === "never" && endsWithNewline) {
+					const secondLastLine = sourceCode.lines.at(-2);
+
+					// File is newline-terminated, but shouldn't be
+					context.report({
+						node,
+						loc: {
+							start: {
+								line: sourceCode.lines.length - 1,
+								column: secondLastLine.length,
+							},
+							end: { line: sourceCode.lines.length, column: 0 },
+						},
+						messageId: "unexpected",
+						fix(fixer) {
+							const finalEOLs = /(?:\r?\n)+$/u,
+								match = finalEOLs.exec(sourceCode.text),
+								start = match.index,
+								end = sourceCode.text.length;
+
+							return fixer.replaceTextRange([start, end], "");
+						},
+					});
+				}
+			},
+		};
+	},
+};