Update README with Swagger documentation and clarify create show endpoint

backend/README.md

@@ -23,6 +23,9 @@ go run ./cmd/migrate
 
 # Tests
 go test ./...
+
+# Swagger create docs
+swag init -g cmd/server/main.go -o ./docs
 ```
 
 ## Docker build (used by compose)
@@ -36,4 +39,5 @@ Compose uses the same image for `api` and the one-off `migrate` job.
 - `GET /api/v1/current` — current schedule item
 - `POST /api/v1/current` — set current episode (expects `{ id, start_time? }`)
 - `GET /api/v1/shows` — list of episodes
+- `POST /api/v1/shows` — create a new episode (expects `{ ep_num, ep_title, season_name, start_time, playback_length }`)
 - `GET /healthz` — health check