feat(help): integrate config-help into fish's help command

Rename config_help → config-help and add a help wrapper that
intercepts 'help config [section]', forwarding sub-topics to
config-help. Update README and docs to use 'help config' as the
preferred interface so offline docs feel like a natural extension
of fish's built-in help system.

functions/config-help.fish

@@ -2,8 +2,8 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
 
 # SYNOPSIS
-#   config_help [section]
-#   config_help --help
+#   config-help [section]
+#   config-help --help
 #
 # DESCRIPTION
 #   Opens the offline fish shell configuration manual in the best available
@@ -24,24 +24,24 @@
 #   1  Documentation file not found
 #
 # EXAMPLE
-#   config_help
-#   config_help keybindings
-#   config_help pkg
-#   config_help fish-deps
-#   config_help --help
-function config_help --description 'Open the offline fish shell configuration manual'
+#   config-help
+#   config-help keybindings
+#   config-help pkg
+#   config-help fish-deps
+#   config-help --help
+function config-help --description 'Open the offline fish shell configuration manual'
     # ── --help / -h ──────────────────────────────────────────────
     if contains -- --help $argv; or contains -- -h $argv
         set_color --bold
-        echo config_help
+        echo config-help
         set_color normal
         echo " — view the offline fish shell configuration manual"
         echo ""
         set_color --bold brblue
         echo USAGE
         set_color normal
-        echo "  config_help "(set_color yellow)"[section]"(set_color normal)
-        echo "  config_help "(set_color yellow)"--help"(set_color normal)
+        echo "  config-help "(set_color yellow)"[section]"(set_color normal)
+        echo "  config-help "(set_color yellow)"--help"(set_color normal)
         echo ""
         set_color --bold brblue
         echo ARGUMENTS
@@ -54,11 +54,11 @@ function config_help --description 'Open the offline fish shell configuration ma
         set_color --bold brblue
         echo EXAMPLES
         set_color normal
-        echo "  "(set_color green)"config_help"(set_color normal)"                  open at top"
-        echo "  "(set_color green)"config_help keybindings"(set_color normal)"      jump to Key Bindings section"
-        echo "  "(set_color green)"config_help pkg"(set_color normal)"              jump to the pkg function entry"
-        echo "  "(set_color green)"config_help fish-deps"(set_color normal)"        jump to fish-deps"
-        echo "  "(set_color green)"config_help abbreviations"(set_color normal)"    jump to Abbreviations section"
+        echo "  "(set_color green)"config-help"(set_color normal)"                  open at top"
+        echo "  "(set_color green)"config-help keybindings"(set_color normal)"      jump to Key Bindings section"
+        echo "  "(set_color green)"config-help pkg"(set_color normal)"              jump to the pkg function entry"
+        echo "  "(set_color green)"config-help fish-deps"(set_color normal)"        jump to fish-deps"
+        echo "  "(set_color green)"config-help abbreviations"(set_color normal)"    jump to Abbreviations section"
         echo ""
         set_color --bold brblue
         echo "NAVIGATION (ov pager)"

functions/help.fish

@@ -0,0 +1,47 @@
+# Copyright (C) 2026 Rootiest
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+# SYNOPSIS
+#    help [topic] [sub-topic...]
+#
+# DESCRIPTION
+#    Wraps the built-in Fish help command. Intercepts the specific topic "config" 
+#    and forwards any subsequent sub-topics/arguments straight to the custom 
+#    'config-help' utility. For all other topics, it forwards the arguments 
+#    intact to the original, built-in system help utility.
+#
+# ARGUMENTS
+#    topic       Optional string representing the primary help subject (e.g., "config").
+#    sub-topic   Optional additional arguments passed exclusively to 'config-help'.
+#
+# RETURNS
+#    0   Successful execution of config-help or the original system help command.
+#    >0  Failure status returned by the underlying help utilities.
+#
+# NOTES
+#    To prevent infinite recursion, the wrapper must backup the native system function 
+#    on the first run. Because Fish lazy-loads functions dynamically, we explicitly 
+#    source the system file and clone it to '__original_help' if it doesn't already exist.
+#
+# EXAMPLE
+#    help config keys
+#    # Executes: config-help keys
+#
+#    help string
+#    # Forwards to the standard fish documentation for 'string'
+
+# --- Initialization & Backup ---
+if not functions -q __original_help
+    source $__fish_data_dir/functions/help.fish
+    functions -c help __original_help
+end
+
+# --- Wrapper Definition ---
+function help --wraps help --description "Custom wrapper to intercept 'help config'"
+    if test "$argv[1]" = config
+        # Pass every argument after 'config' to the config-help function
+        config-help $argv[2..]
+    else
+        __original_help $argv
+    end
+end