Initial CodeCraft: web-based coding harness for AI models

Rust backend (axum/tokio): agent loop with streaming, tools (fs, bash,
web_fetch, todo, ask_user, subagents, skills, craft snapshots/compare),
permissions with modes and rules, Anthropic + OpenAI-compatible providers,
MCP client (stdio/HTTP, elicitation), SQLite sessions, usage statistics,
compaction, commented TOML config editable via toml_edit.

React PWA: chat with live streaming, permission/question cards, modes
(build/plan/craft), settings for providers/models/prices/MCP/permissions,
raw config editor, statistics dashboard, i18n (en/de). Docker setup.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/src/router.ts

@@ -0,0 +1,17 @@
+import { useSyncExternalStore } from "react";
+
+/** Hash routes: #/ , #/s/<id>, #/new, #/settings[/tab], #/stats */
+export function useRoute(): string[] {
+  const hash = useSyncExternalStore(
+    (l) => {
+      window.addEventListener("hashchange", l);
+      return () => window.removeEventListener("hashchange", l);
+    },
+    () => location.hash,
+  );
+  return hash.replace(/^#\/?/, "").split("/").filter(Boolean);
+}
+
+export function navigate(path: string) {
+  location.hash = path.startsWith("/") ? path : `/${path}`;
+}