home/git: add tmcommit script

home/programs/git/default.nix

@@ -262,6 +262,14 @@ in
       runtimeInputs = with pkgs; [ cfg.package coreutils ];
       text = lib.fileContents ./scripts/git-tcommit.sh;
     })
+    (pkgs.writeShellApplication {
+      name = "git-tmcommit";
+      runtimeInputs = with pkgs; [ cfg.package coreutils ];
+      text = lib.pipe ./scripts/git-tcommit.sh [
+        lib.fileContents
+        (builtins.replaceStrings ["hours" "tcommit"] ["minutes" "tmcommit"])
+      ];
+    })
     (pkgs.writeShellApplication {
       name = "git-switch-interactive";
       runtimeInputs = with pkgs; [ cfg.package fzf gnused coreutils ];

home/programs/git/scripts/git-tcommit.sh

@@ -1,5 +1,10 @@
 set -euo pipefail
 
+if [[ $# -lt 1 ]]; then
+  echo "Usage: git tcommit [-]<hours>"
+  exit 1
+fi
+
 HOUR_SHIFT="$1"
 shift