ci: lint all targets, run interop suites for real, compile benches

- clippy --all-targets plus a clawhdf5-format feature matrix (parallel, lz4,
  zstd, pcodec, fast-checksum); fix the accumulated lint backlog in test,
  bench and feature-gated code (no behaviour changes).
- Install python3 + h5py/numpy/netCDF4/xarray in the CI container and set
  CLAWHDF5_REQUIRE_INTEROP=1, which makes a missing interop dependency a test
  failure. Every h5py/netCDF4 interop test used to skip silently in CI. Run
  the #[ignore]d writer_h5py_tests suite explicitly.
- cargo bench --no-run so benches can't rot; fix bench.rs and memory_bench.rs,
  which no longer compiled against the current strategy/consolidation APIs.
- Optional fuzz smoke run via CLAWHDF5_FUZZ_SECONDS.
- CHANGELOG and docs/known-issues.md updated.

Co-Authored-By: Claude Fable 5.1 <[email protected]>

crates/clawhdf5-agent/src/entity_extract.rs

@@ -777,8 +777,10 @@ mod tests {
 
     #[test]
     fn test_tech_disabled() {
-        let mut config = ExtractorConfig::default();
-        config.extract_technology = false;
+        let config = ExtractorConfig {
+            extract_technology: false,
+            ..Default::default()
+        };
         let e = EntityExtractor::new(config);
         let entities = e.extract("We use Rust and Docker.");
         assert!(
@@ -847,8 +849,10 @@ mod tests {
 
     #[test]
     fn test_date_disabled() {
-        let mut config = ExtractorConfig::default();
-        config.extract_dates = false;
+        let config = ExtractorConfig {
+            extract_dates: false,
+            ..Default::default()
+        };
         let e = EntityExtractor::new(config);
         let entities = e.extract("Released on 2024-03-19.");
         assert!(
@@ -981,8 +985,10 @@ mod tests {
 
     #[test]
     fn test_confidence_filter() {
-        let mut config = ExtractorConfig::default();
-        config.min_confidence = 0.95;
+        let config = ExtractorConfig {
+            min_confidence: 0.95,
+            ..Default::default()
+        };
         let e = EntityExtractor::new(config);
         // Only dates (0.95) and techs (0.9) should survive; 0.9 < 0.95 filters techs.
         let entities = e.extract("We use Rust since 2024-01-01.");
@@ -1002,7 +1008,7 @@ mod tests {
     fn test_batch_dedup() {
         let e = default_extractor();
         let texts = ["We use Rust.", "Rust is fast.", "Also Rust for safety."];
-        let entities = e.extract_batch(&texts.iter().map(|s| *s).collect::<Vec<_>>());
+        let entities = e.extract_batch(&texts);
         let rust_count = entities.iter().filter(|x| x.text == "Rust").count();
         assert_eq!(rust_count, 1, "Rust should appear exactly once after dedup");
     }
@@ -1011,7 +1017,7 @@ mod tests {
     fn test_batch_multiple_types() {
         let e = default_extractor();
         let texts = ["Deploy with Docker.", "We merged last week."];
-        let entities = e.extract_batch(&texts.iter().map(|s| *s).collect::<Vec<_>>());
+        let entities = e.extract_batch(&texts);
         assert!(
             entities
                 .iter()