fix: wire orphaned sarif and sweep modules into module tree

The sarif.rs and sweep.rs source files existed but were never registered
in their respective mod.rs/lib.rs, causing test compilation failures.
Also adds Default derive to ProgramStatistics for test constructors.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: hyperpolymath

src/lib.rs

@@ -27,5 +27,6 @@ pub mod kanren;
 pub mod panll;
 pub mod report;
 pub mod signatures;
+pub mod sweep;
 pub mod storage;
 pub mod types;

src/report/mod.rs

@@ -7,6 +7,7 @@ pub mod formatter;
 pub mod generator;
 pub mod gui;
 pub mod output;
+pub mod sarif;
 pub mod tui;
 
 use crate::types::*;

src/types.rs

@@ -377,7 +377,7 @@ pub struct AssailReport {
     pub taint_matrix: TaintMatrix,
 }
 
-#[derive(Debug, Clone, Serialize, Deserialize)]
+#[derive(Debug, Clone, Default, Serialize, Deserialize)]
 pub struct ProgramStatistics {
     pub total_lines: usize,
     pub unsafe_blocks: usize,