feat(pipeline): version tag on indexed nodes + diff_versions MCP tool #811

Job	Run time
lint / lint	8m 3s
security / security-static	32s
security / codeql-gate	38m 10s
changes	3s
security / license-gate	2m 53s
pr-smoke (macos-14)	2m 59s
pr-smoke (ubuntu-latest)	3m 51s
pr-smoke (windows-latest)	7m 47s
test / test-windows-guards	8m 7s
test / setup-matrix	2s
test / test-tsan	13m 36s
test / test-windows (windows-latest, CLANG64, x86_64)	37m 55s
test / test-unix (macos-15-intel, cc, c++)	22m 18s
test / test-unix (ubuntu-latest, gcc, g++)	16m 18s
test / test-unix (ubuntu-24.04-arm, gcc, g++)	1h 18m 12s
test / test-unix (macos-14, cc, c++)	11m 39s
ci-ok	4s
	4h 12m 29s

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