React-Frontend: Grundgerüst (Vite, TypeScript, Router, TanStack Query)

- frontend/ mit Vite 8, React 19, React Router 8, TanStack Query 5, TS 7
- api.ts: Fehler allein über HTTP-Status (ApiError), errMsg wie bisher
- types.ts: API-Antworten laut notes/api.md
- Layout mit unverändertem Header-Markup, app.css als Kopie
- Dev-Proxy für /api und /static aufs Go-Backend
- Containerfile: HEALTHCHECK auf /api/stats

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01TiXsPUqw7oeomZ8wZrQW5q

frontend/src/types.ts

@@ -0,0 +1,86 @@
+// Typen der JSON-API; Referenz ist notes/api.md. Zeitstempel sind
+// Unix-Sekunden.
+
+export interface Entry {
+  pid: number;
+  uid: number;
+  created_at: number;
+  content: string;
+  filepath: string;
+  reply_to: number;
+  reply_count: number;
+  last_activity: number;
+  deleted: number;
+  bump_count: number;
+  last_bump: number;
+  username: string;
+  avatar: string;
+}
+
+export interface Thread {
+  entry: Entry;
+  ancestors: Entry[];
+  replies: Entry[];
+}
+
+export type VoteMode = "left" | "right";
+
+export interface VoteTally {
+  pid: number;
+  left: number;
+  right: number;
+  selected: VoteMode | "none";
+}
+
+export interface BumpResult {
+  pid: number;
+  bump_count: number;
+  last_bump: number;
+  last_activity: number;
+  retry_after: number;
+}
+
+export interface CreatedEntry {
+  pid: number;
+  content: string;
+  filepath: string;
+  reply_to: number;
+}
+
+// GET /api/user/info -- das eigene Konto.
+export interface Me {
+  uid: number;
+  username: string;
+  created_at: number;
+  last_login: number;
+  avatar: string;
+}
+
+// GET /api/u/{username}/info -- öffentliches Profil.
+export interface Profile {
+  uid: number;
+  username: string;
+  created_at: number;
+  avatar: string;
+}
+
+export interface StatsDetail {
+  users: number;
+  entries: number;
+  toplevel: number;
+  replies: number;
+  votes: { left: number; right: number };
+  impressions_total: number;
+  visitors_total: number;
+  daily: { day: string; impressions: number; visitors: number }[];
+  top_asns: { asn: string; hits: number; networks: number }[];
+}
+
+// Fehlerformat: {"error": {...}}, bei manchen Fehlern mit Zusatzfeldern
+// daneben (Repost-Cooldown: retry_after, bump_count).
+export interface ApiErrorBody {
+  code: string;
+  message: string;
+  field?: string;
+  fields?: Record<string, string>;
+}