Media build part 2 (unreleased): drive wiring in every app (R-1024/R-1037), old-install repair (R-1047), drive events notice + real restart now/later + stream check, file browser lets go of dead/removed drives and recreates on return (R-1038), safe removal keeps the drive (R-1044), Plex claim on the running server + probe accept (R-1028/R-1045)

Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS

controller/internal/stacks/manager.go

@@ -333,6 +333,8 @@ type Manager struct {
 	isMountPoint func(string) bool
 	// mediaDrivesFn replaces the enrolled-drive read of media_library.go (tests); nil in production.
 	mediaDrivesFn func() []MediaDrive
+	// onMediaUp runs after a media app's successful `compose up` (the drive wiring, R-1024); nil = nothing.
+	onMediaUp func(name string)
 	// mediaEnsureDirFn replaces appbackup.EnsureUserdataDir for the per-drive media folder (tests); nil in production.
 	mediaEnsureDirFn func(string) error
 
@@ -1685,9 +1687,19 @@ func (m *Manager) composeExecCustomEnv(dir string, env []string, args ...string)
 	}
 
 	m.logger.Printf("[DEBUG] Command completed: %s %s (took %.1fs)", m.composeCmd, strings.Join(args, " "), time.Since(start).Seconds())
+	// R-1024: a media app that came up (installed, started, restarted) gets the drives wired in (idempotent; the web
+	// side debounces). Never for a stack without the marker.
+	if len(args) > 0 && args[0] == "up" && m.onMediaUp != nil {
+		if meta := LoadMetadata(dir); meta.MediaLibrary != nil {
+			m.onMediaUp(filepath.Base(dir))
+		}
+	}
 	return stdout.String(), nil
 }
 
+// SetOnMediaUp registers the callback run after a media app's successful `compose up` (main.go: the wiring).
+func (m *Manager) SetOnMediaUp(f func(name string)) { m.onMediaUp = f }
+
 func (m *Manager) execCommand(name string, args ...string) (string, error) {
 	// execFn is the process-boundary seam (nil in production). It exists so R-51 can be proven
 	// through the REAL refreshStatusLocked path — docker ps → aggregateState → docker inspect —