chore(docs): regenerate manual, man page, and component registry

docs/fish-config.1

@@ -593,8 +593,11 @@ Ctrl+F          Interactive history substitution. Type old/new then
 
 Ctrl+Alt+U      Strip the first token of the current command line,
                 leaving arguments in place with the cursor at the
-                start. Useful for quickly retyping the command.
+                start. Useful for quickly retyping the command. On
+                an empty command line, first recalls the most recent
+                history entry (like Up), then strips its first token.
                 Example: \[dq]mkdir new_folder\[dq] -> \[dq] new_folder\[dq]
+                Example: empty line after \[dq]cd /home/me\[dq] -> \[dq] /home/me\[dq]
 
 Ctrl+Alt+=      Evaluate the current command line buffer with
                 Qalculate! (qalc) and print the result inline.

docs/fish-config.md

@@ -326,8 +326,11 @@ are active in Insert, Normal, and Visual modes unless noted.
 
     Ctrl+Alt+U      Strip the first token of the current command line,
                     leaving arguments in place with the cursor at the
-                    start. Useful for quickly retyping the command.
+                    start. Useful for quickly retyping the command. On
+                    an empty command line, first recalls the most recent
+                    history entry (like Up), then strips its first token.
                     Example: "mkdir new_folder" -> " new_folder"
+                    Example: empty line after "cd /home/me" -> " /home/me"
 
     Ctrl+Alt+=      Evaluate the current command line buffer with
                     Qalculate! (qalc) and print the result inline.