Add gcov-based test pruning with coverage cache#1284

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sbryngelson wants to merge 2 commits intoMFlowCode:masterfrom

sbryngelson:gcov-test-pruning-v3

Commits on Mar 11, 2026

Add gcov-based test pruning with file-level coverage cache

sbryngelson
and
claude
committed

Commits on Mar 12, 2026

Fix review findings: error handling, params mutation, CI robustness

sbryngelson
and
claude
committed