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/apis/assets.rs

@@ -6,7 +6,10 @@ use std::path::Path;
 use crate::{
     Client,
     error::{ImmichError, Result},
-    models::{AssetId, AssetMediaSize, AssetResponse, AssetUploadResponse, DeleteAssetsRequest, MetadataSearchRequest, SearchResponse},
+    models::{
+        AssetId, AssetMediaSize, AssetResponse, AssetUploadResponse, DeleteAssetsRequest,
+        MetadataSearchRequest, SearchResponse,
+    },
 };
 
 /// Response from downloading a thumbnail containing image data and metadata
@@ -161,7 +164,7 @@ impl ListAssetsBuilder {
     /// Execute the request
     pub async fn execute(self) -> Result<Vec<AssetResponse>> {
         let req = self.client.post("/search/metadata");
-        
+
         let mut body = MetadataSearchRequest::default();
 
         if let Some(album_id) = self.album_id {
@@ -215,6 +218,8 @@ pub struct UploadAssetBuilder {
     device_asset_id: Option<String>,
     device_id: Option<String>,
     is_favorite: bool,
+    file_created_at: Option<String>,
+    file_modified_at: Option<String>,
 }
 
 impl UploadAssetBuilder {
@@ -226,6 +231,8 @@ impl UploadAssetBuilder {
             device_asset_id: None,
             device_id: None,
             is_favorite: false,
+            file_created_at: None,
+            file_modified_at: None,
         }
     }
 
@@ -253,6 +260,18 @@ impl UploadAssetBuilder {
         self
     }
 
+    /// Set file creation timestamp (ISO 8601 format)
+    pub fn file_created_at(mut self, timestamp: impl Into<String>) -> Self {
+        self.file_created_at = Some(timestamp.into());
+        self
+    }
+
+    /// Set file modification timestamp (ISO 8601 format)
+    pub fn file_modified_at(mut self, timestamp: impl Into<String>) -> Self {
+        self.file_modified_at = Some(timestamp.into());
+        self
+    }
+
     /// Execute the upload
     pub async fn execute(self) -> Result<AssetUploadResponse> {
         let file_path = self
@@ -282,6 +301,11 @@ impl UploadAssetBuilder {
 
         form = form.text("isFavorite", self.is_favorite.to_string());
 
+        // Add file timestamps (required by Immich API v2)
+        let now = chrono::Utc::now().to_rfc3339();
+        form = form.text("fileCreatedAt", self.file_created_at.unwrap_or_else(|| now.clone()));
+        form = form.text("fileModifiedAt", self.file_modified_at.unwrap_or(now));
+
         let req = self.client.post("/assets").multipart(form);
         let response = self.client.execute(req.build()?).await?;
         let result: AssetUploadResponse = response.json().await?;