feat(presentation): OpenAPI docs at /docs (Swagger) and /scalar

crates/presentation/src/openapi/feed.rs

@@ -0,0 +1,13 @@
+use utoipa::OpenApi;
+
+#[derive(OpenApi)]
+#[openapi(
+    paths(
+        crate::handlers::feed::home_feed,
+        crate::handlers::feed::public_feed,
+        crate::handlers::feed::search_handler,
+        crate::handlers::feed::user_thoughts_handler,
+        crate::handlers::feed::tag_thoughts_handler,
+    ),
+)]
+pub struct FeedDoc;