Closes #29

changelog.md

@@ -8,6 +8,21 @@ existing Git tag; subsequent changes are listed as unreleased.
 
 ### 2026-10-23
 
+#### Added
+
+- Extended `SG_MUL_VAL_` range conditions and nested `mNM` selectors, dispatched
+  through TypeFactory with deferred target resolution and source diagnostics.
+- Shared selector graph validation for parsed and runtime metadata, including
+  ancestor-aware overlap checks, range bounds, reference validation, and cycles.
+  Preserve selector names and ranges through runtime and tree builders.
+- Decode nested paths from raw selectors, including selective decoding and
+  inactive paths with missing child bytes. Support independent root selectors;
+  each signal has one parent, with repeated statements merging range alternatives.
+- Add parser, decoder, metadata, and malformed runtime regression coverage.
+  Verify `qmake6 ../dbc.pro`, `make -j4`, and `make check`: 2,398 QtTest checks
+  passed with no failures; one existing C-locale check skipped because a named
+  comma-decimal locale is unavailable. Both qmake and standalone tree tests pass.
+
 #### Testing
 
 - Add local Release and ASan/UBSan commands in `tests/run_core_ci.sh` for the