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/@tailwindcss/oxide/index.d.ts

@@ -0,0 +1,49 @@
+/* auto-generated by NAPI-RS */
+/* eslint-disable */
+export declare class Scanner {
+  constructor(opts: ScannerOptions)
+  scan(): Array<string>
+  scanFiles(input: Array<ChangedContent>): Array<string>
+  getCandidatesWithPositions(input: ChangedContent): Array<CandidateWithPosition>
+  get files(): Array<string>
+  get scannedFiles(): Array<string>
+  get globs(): Array<GlobEntry>
+  get normalizedSources(): Array<GlobEntry>
+}
+
+export interface CandidateWithPosition {
+  /** The candidate string */
+  candidate: string
+  /** The position of the candidate inside the content file */
+  position: number
+}
+
+export interface ChangedContent {
+  /** File path to the changed file */
+  file?: string
+  /** Contents of the changed file */
+  content?: string
+  /** File extension */
+  extension: string
+}
+
+export interface GlobEntry {
+  /** Base path of the glob */
+  base: string
+  /** Glob pattern */
+  pattern: string
+}
+
+export interface ScannerOptions {
+  /** Glob sources */
+  sources?: Array<SourceEntry>
+}
+
+export interface SourceEntry {
+  /** Base path of the glob */
+  base: string
+  /** Glob pattern */
+  pattern: string
+  /** Negated flag */
+  negated: boolean
+}