Add player control-plane and dashboard updates

docs/api.md

@@ -78,6 +78,11 @@ Response fields:
 Returns the upload directory configured for the player service.
 Access: internal-only.
 
+Response fields:
+
+- `mediaDir`
+- `uploadDir`
+
 ### `PUT /api/media/{filename}`
 Writes an uploaded file into the player upload directory.
 Access: internal-only and write-protected behind your deployment boundary.
@@ -95,6 +100,14 @@ Query fields:
 - `source` required
 - `disableAudio` optional
 
+Response fields:
+
+- `key`
+- `playlistUrl`
+- `disableAudio`
+- `ready`
+- `live`
+
 ### `GET /api/rtmp/streams/{key}/index.m3u8`
 Returns the RTMP session HLS manifest.
 Access: internal-only.
@@ -114,6 +127,7 @@ Response fields:
 - `slides`
 - `rssFeeds`
 - `apiSources`
+- `timetableGroups`
 - `revision`
 
 ### `GET /api/screens/{slug}/connections`
@@ -198,6 +212,7 @@ Response fields:
 
 `GET /api/media/config` returns an object with:
 
+- `mediaDir`
 - `uploadDir`
 
 ### RTMP Session Response
@@ -208,6 +223,7 @@ Response fields:
 - `playlistUrl`
 - `disableAudio`
 - `ready`
+- `live`
 
 ### Onboarding Write Response
 
@@ -230,6 +246,7 @@ Response fields:
 - `slides`
 - `rssFeeds`
 - `apiSources`
+- `timetableGroups`
 - `revision`
 
 ### Connections Response