Remove integration tests in config_extended_test.go that duplicate
unit tests in config_test.go for findLocalCheatpath. Remove redundant
fuzz functions (FuzzFindLocalCheatpathNearestWins, FuzzTagsStress),
a duplicate parse test (TestParseInvalidYAML), and a permanently-skipped
interactive test (TestPromptIntegration).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Previously cheat only checked the current working directory for a .cheat
subdirectory. Now it walks upward through ancestor directories, stopping
at the first .cheat directory found. This mirrors how git discovers .git
directories, so users can place .cheat at their project root and have it
work from any subdirectory.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
