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/vite-node/dist/trace-mapping.d-DLVdEqOp.d.ts

@@ -0,0 +1,57 @@
+type GeneratedColumn = number;
+type SourcesIndex = number;
+type SourceLine = number;
+type SourceColumn = number;
+type NamesIndex = number;
+type SourceMapSegment = [GeneratedColumn] | [GeneratedColumn, SourcesIndex, SourceLine, SourceColumn] | [GeneratedColumn, SourcesIndex, SourceLine, SourceColumn, NamesIndex];
+
+interface SourceMapV3 {
+    file?: string | null;
+    names: string[];
+    sourceRoot?: string;
+    sources: (string | null)[];
+    sourcesContent?: (string | null)[];
+    version: 3;
+    ignoreList?: number[];
+}
+interface EncodedSourceMap extends SourceMapV3 {
+    mappings: string;
+}
+interface DecodedSourceMap extends SourceMapV3 {
+    mappings: SourceMapSegment[][];
+}
+type XInput = {
+    x_google_ignoreList?: SourceMapV3['ignoreList'];
+};
+type EncodedSourceMapXInput = EncodedSourceMap & XInput;
+type DecodedSourceMapXInput = DecodedSourceMap & XInput;
+type SourceMapInput = string | EncodedSourceMapXInput | DecodedSourceMapXInput | TraceMap;
+declare abstract class SourceMap {
+    version: SourceMapV3['version'];
+    file: SourceMapV3['file'];
+    names: SourceMapV3['names'];
+    sourceRoot: SourceMapV3['sourceRoot'];
+    sources: SourceMapV3['sources'];
+    sourcesContent: SourceMapV3['sourcesContent'];
+    resolvedSources: SourceMapV3['sources'];
+    ignoreList: SourceMapV3['ignoreList'];
+}
+
+declare class TraceMap implements SourceMap {
+    version: SourceMapV3['version'];
+    file: SourceMapV3['file'];
+    names: SourceMapV3['names'];
+    sourceRoot: SourceMapV3['sourceRoot'];
+    sources: SourceMapV3['sources'];
+    sourcesContent: SourceMapV3['sourcesContent'];
+    ignoreList: SourceMapV3['ignoreList'];
+    resolvedSources: string[];
+    private _encoded;
+    private _decoded;
+    private _decodedMemo;
+    private _bySources;
+    private _bySourceMemos;
+    constructor(map: SourceMapInput, mapUrl?: string | null);
+}
+
+export type { DecodedSourceMap as D, EncodedSourceMap as E, SourceMapInput as S };