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/is-reference/package.json

@@ -0,0 +1,48 @@
+{
+	"name": "is-reference",
+	"version": "3.0.3",
+	"description": "Determine whether an AST node is a reference",
+	"type": "module",
+	"module": "src/index.js",
+	"types": "types/index.d.ts",
+	"exports": {
+		"types": "./types/index.d.ts",
+		"import": "./src/index.js"
+	},
+	"files": [
+		"src",
+		"types"
+	],
+	"scripts": {
+		"test": "uvu",
+		"prepublishOnly": "npm test && dts-buddy"
+	},
+	"repository": {
+		"type": "git",
+		"url": "git+https://github.com/Rich-Harris/is-reference.git"
+	},
+	"keywords": [
+		"ast",
+		"javascript",
+		"estree",
+		"acorn"
+	],
+	"author": "Rich Harris",
+	"license": "MIT",
+	"bugs": {
+		"url": "https://github.com/Rich-Harris/is-reference/issues"
+	},
+	"homepage": "https://github.com/Rich-Harris/is-reference#readme",
+	"dependencies": {
+		"@types/estree": "^1.0.6"
+	},
+	"devDependencies": {
+		"acorn": "^8.0.5",
+		"acorn-class-fields": "^1.0.0",
+		"acorn-static-class-features": "^1.0.0",
+		"dts-buddy": "^0.5.3",
+		"estree-walker": "^3.0.0",
+		"typescript": "^5.6.3",
+		"uvu": "^0.5.6"
+	}
+}