Swap combo button tiers: quick press resets, ~3s hold shows menu

Quick reset is now the fast/default action; summoning the management
menu takes a deliberate hold. Factory reset at ~15s is unchanged.
Renamed FRAME_COMBO_SOFT_RESET_HOLD_MS -> FRAME_COMBO_MENU_HOLD_MS to
match its new meaning. Bumps firmware to 1.4.1.

firmware/main/combo_button.h

@@ -16,11 +16,11 @@ void combo_button_init(void);
  * Checks the combined menu/reset button and acts on how long it was
  * held, evaluated once per wake:
  *   - Not pressed: returns false immediately.
- *   - Released before CONFIG_FRAME_COMBO_SOFT_RESET_HOLD_MS (a quick
- *     press): returns true -- caller should show the management menu.
- *   - Released between the soft-reset and factory-reset thresholds: a
- *     soft reset (esp_restart(), stored WiFi/server config kept) --
+ *   - Released before CONFIG_FRAME_COMBO_MENU_HOLD_MS (a quick press):
+ *     a soft reset (esp_restart(), stored WiFi/server config kept) --
  *     never returns.
+ *   - Released between the menu and factory-reset thresholds: returns
+ *     true -- caller should show the management menu.
  *   - Held through CONFIG_FRAME_COMBO_FACTORY_RESET_HOLD_MS: a factory
  *     reset (frame_config_clear() + esp_restart(), fires immediately
  *     without waiting for release) -- never returns.