Feat/configurable sanitizers and js precision (#32)

* chore: Exclude CLAUDE.md from Cargo.toml

* feat: Add configurable analysis rules and CLI commands for custom sanitizers and terminators

* feat: Enhance resource management and analysis efficiency

- Implemented parallel summary merging in `scan_filesystem` using rayon for improved performance.
- Introduced `GlobalSummaries::merge()` for efficient merging of summaries.
- Optimized file reading and hashing to eliminate redundant I/O operations.
- Added `should_scan_with_hash()` and `upsert_file_with_hash()` methods to streamline file processing.
- Enhanced taint analysis with in-place mutations to reduce memory allocations.
- Updated resource acquisition patterns to exclude false positives for `freopen` and wrapper functions.

* feat: Implement severity downgrade for findings in non-production paths and add source kind inference

* feat: Update versioning information in SECURITY.md for new stable line

* feat: Update categories in Cargo.toml to include parser-implementations and text-processing

* feat: Update dependencies in Cargo.lock for improved compatibility and performance

* feat: Update dependencies in Cargo.lock and Cargo.toml for improved compatibility

tests/perf_tests.rs

@@ -50,14 +50,14 @@ fn bench_indexed(fixture_dir: &Path, iterations: usize) -> (u64, u64) {
 
         // Cold: build index + scan
         let start = Instant::now();
-        build_index("bench", fixture_dir, &db_path, &cfg).expect("build_index");
+        build_index("bench", fixture_dir, &db_path, &cfg, false).expect("build_index");
         let pool = Indexer::init(&db_path).expect("db init");
-        let _ = scan_with_index_parallel("bench", Arc::clone(&pool), &cfg);
+        let _ = scan_with_index_parallel("bench", Arc::clone(&pool), &cfg, false);
         cold_durations.push(start.elapsed().as_millis() as u64);
 
         // Warm: second scan on same index — files unchanged
         let start = Instant::now();
-        let _ = scan_with_index_parallel("bench", Arc::clone(&pool), &cfg);
+        let _ = scan_with_index_parallel("bench", Arc::clone(&pool), &cfg, false);
         warm_durations.push(start.elapsed().as_millis() as u64);
     }