fix: create multiflexi.env from database.env when it does not exist

update-multiflexi-env only synced keys into multiflexi.env when it
already existed, doing nothing on fresh installs where only
multiflexi-sqlite (not the full multiflexi web app) is present.

Now it copies database.env to multiflexi.env when the latter is missing,
so multiflexi-cli can find its config immediately after the database
backend is configured.

Also call update-multiflexi-env from multiflexi-sqlite.postinst right
after dbc_go creates database.env, so the ordering is correct: sqlite
postinst creates database.env → update-multiflexi-env creates
multiflexi.env → dependent packages' postinst scripts can call
multiflexi-cli successfully.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Vitexus

bin/update-multiflexi-env

@@ -4,20 +4,25 @@
 DB_ENV="/etc/multiflexi/database.env"
 MF_ENV="/etc/multiflexi/multiflexi.env"
 
-if [ -f "$DB_ENV" ] && [ -f "$MF_ENV" ]; then
-    # Read all keys from database.env
-    while IFS='=' read -r key value; do
-        # Skip empty lines and comments
-        [[ -z "$key" || "$key" =~ ^# ]] && continue
-        # Remove possible export
-        key="${key#export }"
-        # Remove whitespace
-        key="$(echo "$key" | xargs)"
-        # Update or add the key in multiflexi.env
-        if grep -qE "^$key=" "$MF_ENV"; then
-            sed -i "s|^$key=.*|$key=$value|" "$MF_ENV"
-        else
-            echo "$key=$value" >> "$MF_ENV"
-        fi
-    done < "$DB_ENV"
+if [ -f "$DB_ENV" ]; then
+    if [ ! -f "$MF_ENV" ]; then
+        mkdir -p "$(dirname "$MF_ENV")"
+        cp "$DB_ENV" "$MF_ENV"
+    else
+        # Read all keys from database.env
+        while IFS='=' read -r key value; do
+            # Skip empty lines and comments
+            [[ -z "$key" || "$key" =~ ^# ]] && continue
+            # Remove possible export
+            key="${key#export }"
+            # Remove whitespace
+            key="$(echo "$key" | xargs)"
+            # Update or add the key in multiflexi.env
+            if grep -qE "^$key=" "$MF_ENV"; then
+                sed -i "s|^$key=.*|$key=$value|" "$MF_ENV"
+            else
+                echo "$key=$value" >> "$MF_ENV"
+            fi
+        done < "$DB_ENV"
+    fi
 fi

debian/multiflexi-sqlite.postinst

@@ -30,6 +30,7 @@ set -e
 
             dbc_go multiflexi "$@"
 
+            update-multiflexi-env
 
             if [ -z "$MULTIFLEXI_NOMIGRATE" ]; then
                 multiflexi-migrator