phase-7: code restructure

ui/src/lib/api/screener.ts

@@ -0,0 +1,32 @@
+import type { ScreenerResult } from '$lib/types.js';
+import type { LLMAnalysis, CatalystStory } from '$lib/types.js';
+
+const BASE = '/api';
+
+export async function screenTickers(tickers: string[]): Promise<ScreenerResult> {
+  const res = await fetch(`${BASE}/screen`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ tickers }),
+  });
+  if (!res.ok) throw new Error(await res.text());
+  return res.json();
+}
+
+export async function fetchCatalysts(): Promise<{ tickers: string[]; stories: CatalystStory[] }> {
+  const res = await fetch(`${BASE}/screen/catalysts`);
+  if (!res.ok) throw new Error(await res.text());
+  return res.json();
+}
+
+export async function analyzeTickers(
+  tickers: string[],
+): Promise<{ analysis: LLMAnalysis | null; reason?: string | null }> {
+  const res = await fetch(`${BASE}/analyze`, {
+    method: 'POST',
+    headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ tickers }),
+  });
+  if (!res.ok) throw new Error(await res.text());
+  return res.json();
+}