ui: the tour names the dock button; the user guide's key table follows shortcuts.cpp

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docs/USER-GUIDE.md

@@ -203,19 +203,24 @@ per sample, `time`, `stream_time`, then one column per signal.
 |---|---|
 | `space` | pause / resume |
 | `a` | arm / disarm the trigger |
-| `t` | the trigger panel |
-| `l` | the layout editor |
-| `g` | go live |
-| `f` | fit to data |
-| `d` | add the first free signal to the focused row |
-| `c` | cursors on/off |
-| `m` | measurements pane |
-| `e` | export |
-| `?` | shortcuts |
+| `t` | enable / disable trigger mode |
+| `c` | enable / disable the cursors |
+| `m` | open or close the Measurements page |
+| `g` | open or close the Signals page (the `+` badge opens it too) |
+| `l` | show / hide the layout editor |
+| `s` | show / hide the dock |
+| `Esc` | close the slide-over page (the guided tour takes it first) |
+| `f` | fit to data (the plot's own key) |
+| `Ctrl+E` | export visible range |
+| `F1` | open the manual |
+| `Ctrl+/` | open the shortcut overview |
+| `Ctrl+T` | start the guided tour |
+| `Ctrl+H` | turn the contextual help on or off |
+| `Ctrl+Q` | quit |
 
-`Ctrl+E` exports, `Ctrl+Q` quits, `Ctrl+plus`/`Ctrl+minus` zoom x and `Alt+plus`/`Alt+minus` zoom y.
-A keystroke is ignored while a text field has focus, so typing in the window control never arms the
-trigger.
+The plot also answers `+`/`-` (zoom both axes), `Ctrl+plus`/`Ctrl+minus` (zoom x only),
+`Alt+plus`/`Alt+minus` (zoom y only) and the arrow keys (pan). A keystroke is ignored while a text
+field has focus, so typing in the window control never arms the trigger.
 
 ## 13. Troubleshooting