* Fix: resolve class/package name conflicts on case-insensitive filesystems
**RenameVisitor**
- Added package-level conflict detection for case-insensitive filesystems:
when two packages differ only by case (e.g. com.Example vs com.example),
rename the conflicting one and loop until the new name is also unique
- Added class-level conflict detection (same pattern): when two classes in
the same package differ only by case (e.g. Sink vs sink), rename the
conflicting one to prevent file overwrite on Windows export
**Tests**
- Added TestCaseSensitivePkgChecks: verifies package rename when packages
differ only by case; fixed smali data (2.smali changed Bar→Foo to create
a genuine path conflict under case-insensitive FS)
- Added TestCaseSensitiveClassInPkgChecks + smali fixtures: verifies class
rename when two classes in a named package differ only by case
(com.example.User vs com.example.user)
* Apply suggestions from code review
Co-authored-by: skylot <118523+skylot@users.noreply.github.com>
* Apply suggestions from code review
Co-authored-by: skylot <118523+skylot@users.noreply.github.com>
---------
Co-authored-by: john <johnwsa@qq.com>
Co-authored-by: skylot <118523+skylot@users.noreply.github.com>
John
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