Critical Issues Fixed: - C1: Replace block_on with await in CLI handlers (main.rs) - Async context panic: main.rs runs in tokio context, block_on causes runtime panic - Changed tokio::runtime::Handle::current().block_on() to async .await calls - C2: Add byte-identical round-trip export/import verification - Verifies nodes survive export-import cycle intact - Uses Blake3 content hash to confirm deterministic re-export behavior Important Issues Fixed: - I1: Fix labels comparison logic (interchange.rs) - Properly detect empty vs None states instead of simple equality - Accounts for both db_node and toml_node label representations - I2: Include status in handoff notes (session.rs) - Updated handoff_notes generation to show task status - Format: 'id: title [status]' for remaining tasks - I3: Add transactional import for nodes and edges (store.rs) - New import_nodes_and_edges() method wraps all writes in BEGIN IMMEDIATE transaction - Uses INSERT OR IGNORE for idempotent imports - Creates parent-child Contains edges for new nodes with parents - I4: Optimize ADR export to avoid N+1 queries (export.rs) - Fetch all edges once instead of per-option query - Use HashMap for efficient in-memory lookup of chosen/rejected status - I5: Extract duplicate session row mapping (session.rs) - Created map_session_row() helper to eliminate 4 copies of identical logic - Applied to get_session, get_latest_session, list_sessions, and query_nodes Minor Issues Fixed: - M1: Update dry_run flag handling (main.rs) - Correctly show what would be imported without performing writes - M2: Fix comment accuracy (interchange.rs) - Updated comment to reflect that content hash is deterministic, not timestamps - M3: Remove unused code (interchange_test.rs, common/mod.rs) - Removed unused imports (GraphStore, HashMap) - Cleaned up unused helper functions Verification: - All 129 tests pass (14 interchange tests, 6 session tests, 13+ in other modules) - Clippy warnings resolved except 2 minor redundant closures in store.rs - Round-trip test confirms export-import content preservation - Transaction safety verified with deterministic re-export behavior Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>