fix: tab reloads actually reload — kanban switch spam, plugins/skills refresh, ws mint (#897)

- ws: ticket-mint response body was read on the calling (main) thread —
  the socket read threw NetworkOnMainThreadException, the mint failed,
  and the kanban events stream never connected (board stuck Offline).
  execute() + body read now run entirely on Dispatchers.IO; same fix in
  DashboardSessionTokenRefresher.fetch (loopback mint path).
- kanban: re-selecting the already-active board reloads data and
  reconnects events WITHOUT the redundant POST /boards/{id}/switch that
  refresh fired on every tap.
- plugins: top-bar Refresh + pull-to-refresh wired through HermesScaffold
  (previously no reload control at all).
- skills: Refresh icon now does a plain GET reload; the heavy hub-update
  POST moved to the cloud icon so refresh is no longer disguised as update.
- test: mock the 3-arg Log.w overload (catch now logs the full stack).

Co-authored-by: M57 <hy4ri@users.noreply.github.com>

app/src/main/java/com/m57/hermescontrol/ui/kanban/KanbanViewModel.kt

@@ -121,6 +121,15 @@ class KanbanViewModel(
     }
 
     fun selectBoard(board: KanbanBoard) {
+        val current = _uiState.value.selectedBoard
+        if (current?.id == board.id) {
+            // Already-active board: reload its data and (re)connect the events
+            // stream WITHOUT the /switch round-trip — refresh and createTask
+            // re-select the same board and must not POST a redundant switch.
+            viewModelScope.launch { loadBoardIntoState(board) }
+            connectEvents(board)
+            return
+        }
         _uiState.update { it.copy(selectedBoard = board, isLoading = true, errorMessage = null) }
         viewModelScope.launch {
             val switchResult =