Fixes

• 5c530a1 fix(cli): don't crash when sun.misc.Signal is unavailable (@sebthom)
• 1a0905a fix(watch): prune file-hash cache on directory deletes (@sebthom)
• 3ac6e95 fix(sync): revalidate prepared target dirs after external changes (@sebthom)
• 40e2118 fix(sync): honor --no-log DELETE for all delete output (@sebthom)
• b46d7ef fix(sync): track created directories separately from copied files (@sebthom)
• 45705f7 fix(sync): avoid missing-parent-dir errors in multi-threaded runs (@sebthom)
• 30e031c fix(sync): honor --ignore-errors for empty-directory handling (@sebthom)
• 11128b4 fix(sync): report canceled runs as "aborted" instead of "done" (@sebthom)
• c786b0b fix(sync): reject mixed dry-run tasks and clarify dry-run stats (@sebthom)
• 5dab6a3 fix(sync): show deleted directories separately in stats (@sebthom)
• b250083 fix(sync): avoid false "stuck" failures with small --stall-timeout (@sebthom)
• adee01c fix(watch): scope file hash cache per task (@sebthom)
• 29b744d fix(config): reject negative max-depth in YAML (@sebthom)
• b45b934 fix(file-utils): copy zero-length user attributes (@sebthom)
• ca084d1 fix(sync): clear prepared dir cache in case of failures (@sebthom)
• 19e5e57 fix: improve symlink handling (@sebthom)
• 8928a36 fix(filters): honor Windows case-insensitive pruning in filter matching (@sebthom)
• 95bd0c3 fix(watch): mirror empty dirs, handle symlink leaves, refresh dir cache (@sebthom)

Other changes

• b39d4af perf(sync): speed up filtered runs with "**" include patterns (@sebthom)
• 473573e docs: fix example syntax (@sebthom)
• 4fc7610 refactor(sync): centralize directory and symlink handling (@sebthom)
• 6ef5742 docs: update README.md (@sebthom)