Add config-backed exact delta changed/affected frontier limits while preserving the conservative defaults. Exact delete and upsert paths now read the effective limits through shared pipeline getters instead of hardcoded live caps.
Add TDD coverage for default clamping, registry entries, and a configured 5-file inbound frontier that publishes exact and matches a fresh rebuild. Extend the incremental benchmark harness with repeatable --config key=value overrides so cap experiments are reproducible.
Validation: ASan/UBSan test-runner build rc=0; CBM_ONLY_SUITE=pipeline passed 304/304; source-safety rc=0 after harness edit; production cbm build rc=0; benchmark pycompile rc=0. Self-dogfood one_source_file with incremental_exact_max_affected_paths=64 passed canonical/oracle/cleanup checks but still fell back to containment with exact_reason=inbound_edges_require_full and only 3.30x speedup, so incremental remains off by default.
Signed-off-by: Andrew Hundt <ATHundt@gmail.com>
Andrew Hundt
179d0bb498