phase 1 complete

src/types.rs

@@ -251,17 +251,20 @@ pub enum IngestError {
     #[error("JSON parsing failed: {0}")]
     JsonError(#[from] serde_json::Error),
 
+    #[error("API returned status {status}: {body}")]
+    ApiStatus { status: u16, body: String },
+
     #[error("Missing dimension in response: {0}")]
     MissingDimension(String),
 
-    #[error("Invalid value: {0}")]
+    #[error("Invalid value code: {0}")]
     InvalidValueCode(String),
 
     #[error("API returned empty data set")]
     EmptyDataset,
 
-    #[error("Dimension '{0}' not found in metadata")]
-    DimensionNotFound(String),
+    #[error("Unicode decode error: {0}")]
+    UnicodeError(String),
 }
 
 // ---------------------------------------------------------------------------