Wave 15: Fix 13 compilation errors → 100% workspace builds

Fixed:
- SQLX type mismatches (7)
- UUID conversions (2)
- Type annotations (1)
- Hash digest API (1)
- SQLX cache regenerated

All services compile, tests running.

data/examples/inspect_parquet_schema.rs

@@ -7,7 +7,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
     let file_path = "/home/jgrusewski/Work/foxhunt/test_data/real/parquet/BTC-USD_30day_2024-09.parquet";
     let file = File::open(file_path)?;
     let builder = ParquetRecordBatchReaderBuilder::try_new(file)?;
-    let schema = builder.schema();
+    let schema = builder.schema().clone();
 
     println!("Parquet Schema:");
     println!("================");