Initial commit: note-taking/task-tracking app with LLM integration scaffold

Vue 3 + TypeScript frontend with Pinia stores, markdown rendering (marked + DOMPurify),
wikilink/tag linkification, and autocomplete. Quart async backend with SQLAlchemy 2.0,
PostgreSQL ARRAY columns, task-note companion linking, backlinks, and note-to-task
conversion. Docker Compose setup with PostgreSQL 16 and Ollama.

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

frontend/src/api/client.ts

@@ -0,0 +1,50 @@
+export async function apiGet<T>(path: string): Promise<T> {
+  const res = await fetch(path);
+  if (!res.ok) {
+    throw new Error(`API error: ${res.status}`);
+  }
+  return res.json() as Promise<T>;
+}
+
+export async function apiPost<T>(path: string, body: unknown): Promise<T> {
+  const res = await fetch(path, {
+    method: "POST",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(body),
+  });
+  if (!res.ok) {
+    throw new Error(`API error: ${res.status}`);
+  }
+  return res.json() as Promise<T>;
+}
+
+export async function apiPut<T>(path: string, body: unknown): Promise<T> {
+  const res = await fetch(path, {
+    method: "PUT",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(body),
+  });
+  if (!res.ok) {
+    throw new Error(`API error: ${res.status}`);
+  }
+  return res.json() as Promise<T>;
+}
+
+export async function apiPatch<T>(path: string, body: unknown): Promise<T> {
+  const res = await fetch(path, {
+    method: "PATCH",
+    headers: { "Content-Type": "application/json" },
+    body: JSON.stringify(body),
+  });
+  if (!res.ok) {
+    throw new Error(`API error: ${res.status}`);
+  }
+  return res.json() as Promise<T>;
+}
+
+export async function apiDelete(path: string): Promise<void> {
+  const res = await fetch(path, { method: "DELETE" });
+  if (!res.ok) {
+    throw new Error(`API error: ${res.status}`);
+  }
+}