Add webapp subproject (Vite + TypeScript + Web Components)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

webapp/src/api.ts

@@ -0,0 +1,67 @@
+export interface DaySummary {
+  date: string
+  count: number
+  first_ts?: string
+  last_ts?: string
+}
+
+export interface Trackpoint {
+  event_id: string
+  device_id: string
+  trip_id: string
+  timestamp: string
+  lat: number
+  lon: number
+  source: 'gps' | 'manual'
+  note?: string
+}
+
+export interface Stop {
+  stop_id: string
+  device_id: string
+  trip_id: string
+  start_ts: string
+  end_ts: string
+  center_lat: number
+  center_lon: number
+  duration_s: number
+  place_label?: string
+}
+
+export interface Suggestion {
+  suggestion_id: string
+  stop_id: string
+  type: 'highlight' | 'name_place' | 'add_note'
+  title: string
+  text: string
+  created_at: string
+  dismissed_at?: string
+}
+
+async function get<T>(path: string): Promise<T> {
+  const res = await fetch(path, { credentials: 'include' })
+  if (res.status === 401) {
+    window.location.href = '/login'
+    throw new Error('unauthenticated')
+  }
+  if (!res.ok) throw new Error(`${res.status} ${res.statusText}`)
+  return res.json() as Promise<T>
+}
+
+export const api = {
+  getDays(from?: string, to?: string): Promise<DaySummary[]> {
+    const params = new URLSearchParams()
+    if (from) params.set('from', from)
+    if (to) params.set('to', to)
+    return get<DaySummary[]>(`/v1/days?${params}`)
+  },
+  getTrackpoints(date: string): Promise<Trackpoint[]> {
+    return get<Trackpoint[]>(`/v1/trackpoints?date=${date}`)
+  },
+  getStops(date: string): Promise<Stop[]> {
+    return get<Stop[]>(`/v1/stops?date=${date}`)
+  },
+  getSuggestions(date: string): Promise<Suggestion[]> {
+    return get<Suggestion[]>(`/v1/suggestions?date=${date}`)
+  },
+}