feat(seed): curated FIFA17 dev content pack + opt-in game-scoped ownership seed

src/config.rs

@@ -6,6 +6,10 @@ pub struct Config {
     pub database_url: String,
     pub data_dir: String,
     pub max_connections: u32,
+    /// Games whose opt-in development content pack (`data/games/<game>/dev/`) is
+    /// loaded IN ADDITION to the default `data/cards` catalog. Empty by default —
+    /// default/test content is never affected unless a game is named here.
+    pub dev_content_games: Vec<String>,
 }
 
 impl Config {
@@ -19,6 +23,16 @@ impl Config {
                 .ok()
                 .and_then(|v| v.parse().ok())
                 .unwrap_or(5),
+            dev_content_games: std::env::var("OPENFUT_DEV_CONTENT_GAMES")
+                .ok()
+                .map(|v| {
+                    v.split(',')
+                        .map(str::trim)
+                        .filter(|s| !s.is_empty())
+                        .map(String::from)
+                        .collect()
+                })
+                .unwrap_or_default(),
         })
     }
 }