refactor(fastfetch): merge the mac and kde configs into common

One Fastfetch package now serves both platforms. The logo is sent
inline through the kitty graphics protocol from a pre-encoded
albedo.kitty, which works in Ghostty and Kwi alike, so the separate
kitty-direct (mac) and Konsole (kde) variants are no longer needed.

mac/README.md

@@ -6,16 +6,10 @@ From the repository root, install all macOS packages:
 (cd mac && stow -t "$HOME" */)
 ```
 
-Or choose individual packages:
+Install the package:
 
 ```sh
 stow -d mac -t "$HOME" ghostty
-stow -d mac -t "$HOME" fastfetch
 ```
 
 - `ghostty`: JetBrainsMono Nerd Font and Ghostty's bundled SpaceGray Eighties theme.
-- `fastfetch`: the original configuration, with a `kitty-direct` image logo.
-  Its source PNG is included in `fastfetch/.config/fastfetch/`.
-
-These packages are independent. Choose either `mac/fastfetch` or
-`kde/fastfetch`; both own `~/.config/fastfetch/`.

mac/fastfetch/.config/fastfetch/config.jsonc

@@ -1,80 +0,0 @@
-{
-    "$schema": "https://github.com/fastfetch-cli/fastfetch/raw/master/doc/json_schema.json",
-    "display": {
-        "key": {
-            "width": 10
-        },
-        "size": {
-            "binaryPrefix": "jedec"
-        },
-        "separator": ""
-    },
-    "logo": {
-        "type": "kitty-direct",
-        "source": "~/.config/fastfetch/albedo.png",
-        "width": 20,
-        "height": 10
-    },
-    "modules": [
-        "break",
-        {
-            "type": "os",
-            "key": "os",
-            "keyColor": "yellow",
-            "format": "{name}"
-        },
-        {
-            "type": "kernel",
-            "key": "ker",
-            "keyColor": "green"
-        },
-        {
-            "type": "packages",
-            "key": "pkgs",
-            "keyColor": "cyan"
-        },
-        {
-            "type": "shell",
-            "key": "sh",
-            "keyColor": "blue",
-            "format": "{pretty-name}"
-        },
-        {
-            "type": "wm",
-            "key": "wm",
-            "keyColor": "red",
-            "format": "{pretty-name}"
-        },
-        {
-            "type": "uptime",
-            "key": "up",
-            "keyColor": "green"
-        },
-        {
-            "type": "cpu",
-            "key": "cpu",
-            "keyColor": "red",
-            "format": "{name}"
-        },
-        {
-            "type": "memory",
-            "key": "ram",
-            "keyColor": "yellow",
-            "format": "{used} / {total}"
-        },
-        {
-            "type": "disk",
-            "key": "disk",
-            "keyColor": "cyan",
-            "folders": [
-                "/"
-            ],
-            "format": "{size-used} / {size-total}"
-        },
-        "break",
-        {
-            "type": "custom",
-            "format": "\u001b[33m󰮯 \u001b[32m󰊠 \u001b[34m󰊠 \u001b[31m󰊠 \u001b[36m󰊠 \u001b[35m󰊠 \u001b[37m󰊠 \u001b[97m󰊠"
-        }
-    ]
-}