kitty: add GrokNight and GrokDay themes

Ported from grok build's TUI themes, whose palettes are defined in
crates/codegen/xai-grok-pager-render/src/theme/{groknight,grokday}.rs in
xai-org/grok-build -- they are compiled RGB constants, not extractable
from the shipped binary.

background uses grok's bg_terminal and cursor uses accent_user, which
grok sets over OSC 12 at startup, so a grok session sits flush against
the terminal. ANSI slots map onto the palette's own normal/bright pairs.

GrokNight's blue uses `blue` in both slots, as upstream TokyoNight does:
the palette's blue0 is a background blue and only reaches 2.96:1 on
#0a0a0a, which is too dim for ls output.

private_dot_config/kitty/grokday.conf

@@ -0,0 +1,52 @@
+# GrokDay — neutral light gray base with deepened accents.
+#
+# Ported from grok build's TUI theme:
+#   xai-org/grok-build
+#   crates/codegen/xai-grok-pager-render/src/theme/grokday.rs
+#
+# Light counterpart to GrokNight: same hue family, darkened for contrast on a
+# light background. background is grok's bg_terminal and cursor is accent_user,
+# which grok itself sets over OSC 12 on startup.
+
+background            #f5f5f5
+foreground            #262626
+cursor                #444444
+cursor_text_color     #f5f5f5
+selection_background  #c6c6c6
+selection_foreground  #262626
+url_color             #2f64d2
+
+# black   — text_primary / dark5
+color0                #262626
+color8                #626262
+# red     — red1 / red
+color1                #af2323
+color9                #cd3048
+# green   — green / green1
+color2                #378e23
+color10               #0c947c
+# yellow  — yellow / orange
+color3                #a27612
+color11               #c3691e
+# blue    — blue0 / blue
+color4                #28448a
+color12               #2f64d2
+# magenta — purple / magenta (grok's signature accent)
+color5                #6c3eb2
+color13               #7d4bc6
+# cyan    — teal / cyan
+color6                #0a8e70
+color14               #0082aa
+# white   — fg_gutter / bg_storm
+color7                #b2b2b2
+color15               #eeeeee
+
+# START_AUTOGENERATED_TAB_STYLE
+# Feel free to update these colors manually and remove these comments.
+active_tab_foreground   #f5f5f5
+active_tab_background   #7d4bc6
+inactive_tab_foreground #7d4bc6
+inactive_tab_background #f5f5f5
+# END_AUTOGENERATED_TAB_STYLE
+
+macos_titlebar_color background

private_dot_config/kitty/groknight.conf

@@ -0,0 +1,53 @@
+# GrokNight — neutral gray base with TokyoNight accents.
+#
+# Ported from grok build's TUI theme:
+#   xai-org/grok-build
+#   crates/codegen/xai-grok-pager-render/src/theme/groknight.rs
+#
+# background is grok's bg_terminal (the color the TUI expects behind it) and
+# cursor is accent_user, which grok itself sets over OSC 12 on startup, so a
+# grok session blends into the terminal instead of sitting on a seam.
+
+background            #0a0a0a
+foreground            #e1e1e1
+cursor                #c8c8c8
+cursor_text_color     #0a0a0a
+selection_background  #363636
+selection_foreground  #e1e1e1
+url_color             #7aa6da
+
+# black   — fg_gutter / dark5
+color0                #414141
+color8                #787878
+# red     — red1 / red
+color1                #db4b4b
+color9                #f7768e
+# green   — green / green1
+color2                #9ece6a
+color10               #73daca
+# yellow  — yellow / orange
+color3                #e0af68
+color11               #ff9e64
+# blue    — blue for both, as upstream TokyoNight does; the palette's blue0
+#           (#3d59a1) is a background blue and only reaches 2.96:1 on this bg
+color4                #7aa2f7
+color12               #7aa2f7
+# magenta — purple / magenta (grok's signature accent)
+color5                #9d7cd8
+color13               #bb9af7
+# cyan    — teal / cyan
+color6                #1abc9c
+color14               #7dcfff
+# white   — text_secondary / text_primary
+color7                #c8c8c8
+color15               #e1e1e1
+
+# START_AUTOGENERATED_TAB_STYLE
+# Feel free to update these colors manually and remove these comments.
+active_tab_foreground   #0a0a0a
+active_tab_background   #bb9af7
+inactive_tab_foreground #bb9af7
+inactive_tab_background #0a0a0a
+# END_AUTOGENERATED_TAB_STYLE
+
+macos_titlebar_color background