[ac1982]

Fixes #98.

When the home directory is a symlink located on a different filesystem from its target, the Freedesktop backend uses lstat on the link to choose the trash device. A file inside the actual home is then treated as external, potentially failing to find a writable volume trash even though its home trash is available.

Resolve the home path before probing its device. The source path still uses lstat, so trashing a symlink moves the link itself. Regression cases cover ordinary files and symlink sources, including the initially absent home trash.

Validation on Linux/arm64, Python 3.14.4:

• Both new cases fail before the fix and pass afterward.
• Full suite: 13 passed, 1 Windows-only module skipped. Tilde expansion was redirected to a temporary test directory before importing the suite, to isolate its home-directory file operations.
• A separate real-filesystem check used a home symlink on /tmp pointing into /dev/shm (different device IDs) and verified the file and its trashinfo reached the home trash.
• Flake8, Black for changed files, and git diff --check pass.

macOS and Windows were not run locally. Developed and verified with AI assistance.