chore: add sproutclaw git workflow and track local extensions

Document main/upstream-sync/feature branch strategy, add sync/push
scripts, track .pi/agent extensions and webui in git, and disable
startup changelog via showChangelogOnStartup.

Co-authored-by: Cursor <cursoragent@cursor.com>

.pi/agent/extensions/webui/frontend/src/api/webuiConfig.ts

@@ -0,0 +1,25 @@
+import { apiGet, apiPost } from "./client";
+
+export interface WebuiConfigResponse {
+	config?: Record<string, string>;
+	dbPath?: string;
+	key?: string;
+	value?: string | null;
+}
+
+export function fetchWebuiConfig(key?: string): Promise<WebuiConfigResponse> {
+	const query = key ? `?key=${encodeURIComponent(key)}` : "";
+	return apiGet(`/api/webui/config${query}`);
+}
+
+export function saveWebuiConfig(key: string, value: string): Promise<{ ok?: boolean; key?: string; value?: string }> {
+	return apiPost("/api/webui/config", { key, value });
+}
+
+export function saveWebuiConfigMany(entries: Record<string, string>): Promise<{ ok?: boolean; config?: Record<string, string> }> {
+	return apiPost("/api/webui/config", { entries });
+}
+
+export function deleteWebuiConfig(key: string): Promise<{ ok?: boolean; deleted?: boolean; key?: string }> {
+	return apiPost("/api/webui/config/delete", { key });
+}