feat: add .env template and validate SOPS age key presence

.env.template

@@ -0,0 +1 @@
+# Project environment

bin/init-project

@@ -13,6 +13,9 @@ init-project() {
     echo "Copy taskfile template."
     cp -n "$HOME/taskfile.build/task.template" ./task
 
+    echo "Copy env template."
+    cp -n "$HOME/taskfile.build/.env.template" ./.env.template
+
     echo "Copy agents template."
     cp -n "$HOME/taskfile.build/AGENTS.md.template" ./AGENTS.md
 

bin/show-project-setup

@@ -7,7 +7,8 @@ show-project-setup() {
     project_name=$(basename -s .git "$(git remote get-url origin 2>/dev/null)" 2>/dev/null)
     project_name=${project_name:-${PWD##*/}}
 
-    local key_name="${1:-$project_name}"
+    local key_name
+    key_name=$(echo "${1:-$project_name}" | tr '[:upper:]' '[:lower:]')
     local age_key_file="$HOME/.config/sops/age/keys.txt"
     local branch
     branch=$(git symbolic-ref --short -q HEAD)
@@ -38,10 +39,10 @@ show-project-setup() {
         echo "SOPS config: not found"
     fi
 
-    if [[ -f "$age_key_file" ]]; then
-        echo "Age key file exists."
+    if [[ -f "$age_key_file" ]] && grep -q "# name: $key_name" "$age_key_file"; then
+        echo "Age key: exists"
     else
-        echo "Age key file: not found"
+        echo "Age key: not found"
     fi
 }
 sps() {