Integrate cache into CrcParams::new()

- [x] 5. Integrate cache into CrcParams::new()
  - Modify `CrcParams::new()` in `src/structs.rs` to use `cache::get_or_generate_keys()`
  - Replace direct call to `generate::keys()` with cache lookup
  - Ensure all existing functionality remains unchanged
  - Verify that the function signature and behavior are identical

Author: onethumb

.kiro/specs/crc-params-caching/tasks.md

@@ -26,7 +26,7 @@
   - Ensure all cache operations are best-effort with graceful degradation
   - _Requirements: 4.3_
 
-- [ ] 5. Integrate cache into CrcParams::new()
+- [x] 5. Integrate cache into CrcParams::new()
   - Modify `CrcParams::new()` in `src/structs.rs` to use `cache::get_or_generate_keys()`
   - Replace direct call to `generate::keys()` with cache lookup
   - Ensure all existing functionality remains unchanged

src/structs.rs

@@ -3,7 +3,7 @@
 #![allow(dead_code)]
 
 use crate::traits::{CrcCalculator, CrcWidth};
-use crate::{arch, generate, CrcAlgorithm, CrcParams};
+use crate::{arch, cache, CrcAlgorithm, CrcParams};
 
 /// CRC-32 width implementation
 #[derive(Clone, Copy)]
@@ -57,7 +57,7 @@ impl CrcParams {
         xorout: u64,
         check: u64,
     ) -> Self {
-        let keys = generate::keys(width, poly, reflected);
+        let keys = cache::get_or_generate_keys(width, poly, reflected);
 
         let algorithm = match width {
             32 => CrcAlgorithm::Crc32Custom,