chore(docs): regenerate man page, HTML docs, and wiki

docs/fish-config.1

@@ -1778,7 +1778,7 @@ Do not commit fish_variables.
 .SS Opinionated Components (Minimal Mode)
 .PP
 Every opinionated piece of this config is active by default but can be
-switched off through five category opt-out variables, each evaluated via
+switched off through six category opt-out variables, each evaluated via
 __fish_variable_check.
 Set a variable to any falsy value (0, false, no, off, n) to disable its
 category; erase it or set a truthy value (1, true, yes, on, y) to
@@ -1815,6 +1815,12 @@ __fish_config_op_logging        Logging & capture: scrollback
                                 wrappers, Kitty watcher capture;
                                 sentinel file coordinates
                                 cross-process state
+__fish_config_op_greeting       Greeting & first-run UI: per-session
+                                fish_greeting override (defines empty
+                                function late in config.fish to
+                                suppress distro greetings such as
+                                CachyOS fastfetch); first-run welcome
+                                banner in conf.d/first_run.fish
 \f[R]
 .fi
 .PP
@@ -1825,7 +1831,7 @@ Examples:
 # Disable command shadows only (rm becomes plain rm again):
 set -U __fish_config_op_aliases off
 
-# Full minimal mode \[em] disable all five categories at once:
+# Full minimal mode \[em] disable all six categories at once:
 set -U __fish_config_opinionated 0
 
 # Re-enable everything:
@@ -1896,7 +1902,8 @@ fish_config theme save \[dq]Catppuccin Latte\[dq]
 Fisher is bootstrapped automatically on the \f[B]first interactive
 session\f[R] via \f[V]conf.d/first_run.fish\f[R].
 This also applies the Catppuccin Mocha theme and prints a one-time
-welcome message.
+welcome message (gated by __fish_config_op_greeting; set it to 0 to
+suppress).
 Subsequent sessions skip all first-run logic with zero overhead.
 .PP
 To re-trigger first-run initialization (e.g., after a fresh install or