Clean up dead code, debug artifacts, and duplicate scripts

Remove files that don't contribute to the working interception pipeline:

Dead code:
- ComparisonInterceptorVisitor.java — superseded by inlined visitor in
  GaletteAgent.ComparisonInterceptionTransformer

Debug artifacts from Anne's branch:
- TestAgent.java, TestRecursionProtection.java — ad-hoc debug tests
- CONFETTI-REUSE-PLAN.md — future planning doc, not part of pipeline

Duplicate/obsolete scripts:
- rebuild-instrumented-java.sh — duplicates run-instrumented-with-option-flags.sh
- run-instrumented-enhanced.sh — duplicate variant
- run-symbolic-execution-instrumented.sh — duplicate variant
- run-vitruvius-test.sh — duplicate variant
- run-interception-test.sh — simple wrapper, tests available elsewhere
- run-instrumented-with-option-flags copy.sh — backup with malformed name
- SCRIPTS_OVERVIEW.md — documented the removed duplicates

Cleanup:
- Remove debug println from reaction routines (temporary tracing)
- Update comments referencing deleted ComparisonInterceptorVisitor
- Keep restored tests that don't compile (API changed) as deleted

Verified: brake exploration with --interception still finds 5 paths.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: AnneKoziolek

CONFETTI-REUSE-PLAN.md

@@ -6,7 +6,8 @@
 /**
  * Minimal runtime for bytecode-level comparison interception.
  *
- * This class is referenced by ComparisonInterceptorVisitor at the bytecode level.
+ * This class is called by bytecode injected by the ComparisonInterceptionTransformer
+ * (inlined in GaletteAgent) at the bytecode level.
  * It must be jlink-safe: no complex static initializers, no System.out, no shutdown hooks.
  *
  * Collected constraints are retrieved via flush() by GalettePathConstraintBridge in knarr-runtime.