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.

docs/architecture.md

@@ -102,9 +102,9 @@ placement grid, and button-action dispatch.
    - Deep sleep for the server-configured interval on success, or a
      shorter retry interval on any failure.
 
-   The menu/reset button's soft-reset and factory-reset tiers (held ~3s
-   or ~15s) are handled earlier, before any of this, and never return --
-   see [`firmware/README.md`](../firmware/README.md#managing-the-queue-soft-resetting-and-factory-resetting).
+   The menu/reset button's soft-reset (quick press) and factory-reset
+   (held ~15s) tiers are handled earlier, before any of this, and never
+   return -- see [`firmware/README.md`](../firmware/README.md#managing-the-queue-soft-resetting-and-factory-resetting).
 
 See [`docs/hardware.md`](hardware.md) for wiring and
 [`server/README.md`](../server/README.md) for the server side.

docs/hardware.md

@@ -40,10 +40,10 @@ pressed):
   photo; see
   [`firmware/README.md`](../firmware/README.md#going-back-to-the-previous-photo).
 - **Menu / reset (GPIO1)**: one button, three actions by hold duration --
-  a quick press overlays a "scan to manage" QR code on the current photo
-  for 30 seconds; holding ~3s then releasing soft-resets the device
-  (config kept); holding ~15s factory-resets it (clears WiFi/server
-  config, reprovisions); see
+  a quick press soft-resets the device (config kept); holding ~3s then
+  releasing overlays a "scan to manage" QR code on the current photo for
+  30 seconds; holding ~15s factory-resets it (clears WiFi/server config,
+  reprovisions); see
   [`firmware/README.md`](../firmware/README.md#managing-the-queue-soft-resetting-and-factory-resetting).
 
 All three pins were picked because they're within GPIO 0-7 -- the only