Replace raw strdup calls in the incremental inbound-edge snapshot with cbm_strdup so the touched path follows the repository portability wrapper convention. Add a source-safety diff guard and self-test that reject newly introduced raw strdup calls in production code without failing historical existing uses.
Validation: git diff --check; make -j8 -f Makefile.cbm build/c/test-runner; make -f Makefile.cbm lint-source-safety; CBM_ONLY_SUITE=pipeline ./build/c/test-runner; CBM_ONLY_SUITE=incremental ./build/c/test-runner.
Signed-off-by: Andrew Hundt <ATHundt@gmail.com>
Andrew Hundt
8287f7394c