fix: overhaul fish_right_prompt — exit code, dim time, remove docker dep

functions/fish_right_prompt.fish

@@ -1,34 +1,32 @@
 # Copyright (C) 2026 Rootiest
 # SPDX-License-Identifier: AGPL-3.0-or-later
-
+#
 # SYNOPSIS
 #   fish_right_prompt
 #
 # DESCRIPTION
-#   Renders the right-side prompt showing the active Docker context (in blue,
-#   when non-default) and the current timestamp.
+#   Renders the right-side prompt. Shows a red ✘ with the exit code when the
+#   last command failed (hidden on success), followed by the current time in
+#   Catppuccin Overlay0 (dim). Rendered regardless of C3 state so it pairs
+#   correctly with both the starship and the Catppuccin fallback left prompt.
+#
+# RETURNS
+#   0  Always
 #
 # EXAMPLE
-#   # Rendered automatically by Fish shell; not called directly.
+#   # Rendered automatically by fish; not called directly.
 function fish_right_prompt --description 'Execute fish_right_prompt'
-    # Opinionated guard (C3): no right prompt when overrides are disabled.
-    __fish_config_op_enabled __fish_config_op_overrides; or return
+    set -l last_status $status
 
-    # 1. Docker Context in Blue
-    set -l docker_ctx (docker context show 2>/dev/null)
-    if test -n "$docker_ctx"; and test "$docker_ctx" != default
-        set_color blue
-        echo -n "󰡨 $docker_ctx "
+    # Failed command: red ✘ + exit code; hidden when 0
+    if test $last_status -ne 0
+        set_color '#f38ba8'
+        echo -n "✘ $last_status  "
         set_color normal
     end
 
-    # 2. Timestamp Logic with Fallback
-    set_color brblack
-    if type -q __bobthefish_timestamp
-        __bobthefish_timestamp
-    else
-        # Manual fallback format: Wed Feb 11 15:04:28 2026
-        date "+%a %b %d %H:%M:%S %Y"
-    end
+    # Timestamp — Catppuccin Overlay0 (dim)
+    set_color '#6c7086'
+    date +%X
     set_color normal
 end