[refactor] rename and simplify ProgressManager to FileProgress, enhance caching logic, update Hugging Face API integration, and clean up unused comments

crates/polyscribe-core/build.rs

@@ -1,12 +1,14 @@
 // SPDX-License-Identifier: MIT
-// Move original build.rs behavior into core crate
+
 fn main() {
-    // Only run special build steps when gpu-vulkan feature is enabled.
     let vulkan_enabled = std::env::var("CARGO_FEATURE_GPU_VULKAN").is_ok();
+    println!("cargo:rerun-if-changed=extern/whisper.cpp");
     if !vulkan_enabled {
+        println!(
+            "cargo:warning=gpu-vulkan feature is disabled; skipping Vulkan-dependent build steps."
+        );
         return;
     }
-    println!("cargo:rerun-if-changed=extern/whisper.cpp");
     println!(
         "cargo:warning=Building with gpu-vulkan: ensure Vulkan SDK/loader are installed. Future versions will compile whisper.cpp via CMake."
     );