fix(mcp): prefilter scoped search_code paths #343

Job	Run time
security / security-static	30s
security / license-gate	2m 43s
lint / lint	4m 34s
security / codeql-gate	37m 12s
test / setup-matrix	4s
test / test-unix (ubuntu-24.04-arm, gcc, g++)	1h 2m 29s
test / test-windows (windows-latest, CLANG64, x86_64)	32m 19s
test / test-unix (macos-15-intel, cc, c++)	29m 22s
test / test-unix (ubuntu-latest, gcc, g++)	14m 43s
test / test-unix (macos-14, cc, c++)	14m 9s
ci-ok	2s
	3h 18m 7s

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