Fix examples and SDK for Immich v2 API compatibility

- Fix AssetUploadStatus serialization to use snake_case (created/duplicate/rejected)
- Fix AssetOrder serialization to use lowercase (asc/desc)
- Add file_created_at/file_modified_at to UploadAssetBuilder
- Fix AddAssetsBuilder response type to Vec<Value> instead of AlbumResponse
- Fix ServerAbout model - version is String not ServerVersion struct
- Update upload_photos.rs to handle duplicate responses correctly
- Update server_info.rs to display new ServerAbout fields
- Update AGENTS.md with new example list

src/models/mod.rs

@@ -186,10 +186,66 @@ pub struct ServerFeatures {
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct ServerAbout {
-    /// Version information
-    pub version: ServerVersion,
-    /// Version string
+    /// Server version (e.g., "v2.7.5")
+    pub version: String,
+    /// URL to version information
     pub version_url: String,
+    /// Build identifier
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub build: Option<String>,
+    /// Build URL
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub build_url: Option<String>,
+    /// Build image name
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub build_image: Option<String>,
+    /// Build image URL
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub build_image_url: Option<String>,
+    /// ExifTool version
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub exiftool: Option<String>,
+    /// FFmpeg version
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub ffmpeg: Option<String>,
+    /// ImageMagick version
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub imagemagick: Option<String>,
+    /// libvips version
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub libvips: Option<String>,
+    /// Node.js version
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub nodejs: Option<String>,
+    /// Repository name
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub repository: Option<String>,
+    /// Repository URL
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub repository_url: Option<String>,
+    /// Source commit hash
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub source_commit: Option<String>,
+    /// Source reference (branch/tag)
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub source_ref: Option<String>,
+    /// Source URL
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub source_url: Option<String>,
+    /// Third-party bug/feature URL
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub third_party_bug_feature_url: Option<String>,
+    /// Third-party documentation URL
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub third_party_documentation_url: Option<String>,
+    /// Third-party source URL
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub third_party_source_url: Option<String>,
+    /// Third-party support URL
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub third_party_support_url: Option<String>,
+    /// Whether the server is licensed
+    pub licensed: bool,
 }
 
 /// Create album request
@@ -248,7 +304,7 @@ pub struct AssetUploadResponse {
 
 /// Asset upload status
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
-#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
+#[serde(rename_all = "snake_case")]
 pub enum AssetUploadStatus {
     /// Upload created new asset
     Created,
@@ -284,7 +340,7 @@ pub struct ApiKeyResponse {
 
 /// Asset order enumeration
 #[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq)]
-#[serde(rename_all = "SCREAMING_SNAKE_CASE")]
+#[serde(rename_all = "lowercase")]
 pub enum AssetOrder {
     /// Oldest first
     Asc,