use delta as pager

`chezmoi` seems to ignore files and directories beggining with "." by
default. So, there is no need to add pattern(s) to `.chezmoiignore` to
ignore files/directories stored in `.assets`.

.assets/arch_ecc.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIA6kT1StOnTqzAsHrfD2hYseT0NNn4jmWWr/QOIAqFhQ inkch@arch

.assets/buzz_ecc.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFi+/1XAFLuDHP7poYvCHDNU0WxWc3PJVJJdFe+CoPTN inkch@kuro

.assets/devo_ecc.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIFPsBbiLijh2XF6ZQqegMxDLBBGWjwBeUV1OslsZEf8M inkch@devo

.assets/emergency_key1.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHEJJRR2LJUZRw/ACfz4dlKmNj6481E+XBNAAr9qp4Kf inkch@arch@emergency1

.assets/emergency_key2.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMfXbU51hUJ8gfA85ICQobXFgC7WuhyIlVAblGkksifz inkch@arch@emergency2

.assets/rpi4_ecc.pub

@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIIBNlGgKihZ/TKCbc4uMcxfoiZUwADBq0fm/vGOrhoJ admin@rpi4

.chezmoi.toml.tmpl

@@ -2,7 +2,7 @@
     command = "nvim"
 
 [diff]
-    command = "delta"
+    pager = "delta"
 
 [merge]
     command = "nvim"

.chezmoiignore

@@ -2,7 +2,6 @@
 # https://www.chezmoi.io/reference/special-files-and-directories/chezmoiignore/
 
 README.md
-key.txt.age
 .bashrc
 
 {{- if ne .chezmoi.osRelease.id "arch" }}

run_once_before_decrypt-private-key.sh.tmpl

@@ -0,0 +1,7 @@
+#!/bin/sh
+
+if [ ! -f "${HOME}/.config/chezmoi/key.txt" ]; then
+    mkdir -p "${HOME}/.config/chezmoi"
+    chezmoi age decrypt --output "${HOME}/.config/chezmoi/key.txt" --passphrase "{{ .chezmoi.sourceDir }}/.assets/key.txt.age"
+    chmod 600 "${HOME}/.config/chezmoi/key.txt"
+fi