feat: completed base feature set for the app

crates/bds-core/src/model/metadata.rs

@@ -4,6 +4,23 @@ fn default_max_posts() -> i32 {
     50
 }
 
+fn default_image_import_concurrency() -> i32 {
+    4
+}
+
+fn deserialize_image_import_concurrency<'de, D>(deserializer: D) -> Result<i32, D::Error>
+where
+    D: serde::Deserializer<'de>,
+{
+    let value = serde_json::Value::deserialize(deserializer)?;
+    let parsed = value
+        .as_i64()
+        .map(|value| value as i32)
+        .or_else(|| value.as_str().and_then(|value| value.parse::<i32>().ok()))
+        .unwrap_or_else(default_image_import_concurrency);
+    Ok(parsed.clamp(1, 8))
+}
+
 fn default_true() -> bool {
     true
 }
@@ -22,6 +39,11 @@ pub struct ProjectMetadata {
     pub default_author: Option<String>,
     #[serde(default = "default_max_posts")]
     pub max_posts_per_page: i32,
+    #[serde(
+        default = "default_image_import_concurrency",
+        deserialize_with = "deserialize_image_import_concurrency"
+    )]
+    pub image_import_concurrency: i32,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub blogmark_category: Option<String>,
     #[serde(skip_serializing_if = "Option::is_none")]
@@ -41,6 +63,12 @@ impl ProjectMetadata {
                 self.max_posts_per_page
             ));
         }
+        if !(1..=8).contains(&self.image_import_concurrency) {
+            return Err(format!(
+                "imageImportConcurrency must be 1..8, got {}",
+                self.image_import_concurrency
+            ));
+        }
         Ok(())
     }
 }
@@ -80,6 +108,7 @@ mod tests {
             main_language: Some("en".into()),
             default_author: None,
             max_posts_per_page: 50,
+            image_import_concurrency: 4,
             blogmark_category: None,
             pico_theme: None,
             semantic_similarity_enabled: false,
@@ -101,6 +130,7 @@ mod tests {
         let json = r#"{"name": "Minimal"}"#;
         let meta: ProjectMetadata = serde_json::from_str(json).unwrap();
         assert_eq!(meta.max_posts_per_page, 50);
+        assert_eq!(meta.image_import_concurrency, 4);
         assert!(!meta.semantic_similarity_enabled);
         assert!(meta.blog_languages.is_empty());
     }
@@ -159,6 +189,7 @@ mod tests {
             main_language: None,
             default_author: None,
             max_posts_per_page: 50,
+            image_import_concurrency: 4,
             blogmark_category: None,
             pico_theme: None,
             semantic_similarity_enabled: false,