Under --skip-errors, an error recording a directory or symlink in the
local index was skipped like an unreadable file. The snapshot completed
without the entry, and a restore did not recreate it.
processFileWithErrorHandling now records a directory or symlink itself
and returns any error, which stops the backup with or without the flag.
The skip sees only a regular file's errors, so countFailedFile no longer
checks for a directory.
The test injects the error with a SQLite trigger that refuses the
directory's files row.
Model: opus-5-5
sneak