Fixes for watched folders, Preset tests, local AI startup and trials

This update fixes watched-folder handling, Preset testing, local AI startup, and Self-Managed trial recovery on Mac and Windows.

• Watched folders recognize newly arrived files with older dates. Files found after an interrupted watch or a later scan can be reviewed and renamed, or left unchanged. Automatic recovery is optional; larger discoveries still ask for confirmation.

• Preset test drops stay in the test. Dropping a sample file into a Preset test no longer opens Quick Rename.

• Unchanged names are shown honestly. A suggestion that keeps the same name is marked “No better name found” instead of creating a false “Renamed” entry. This also covers suggestions saved before the update.

• Start engine gives useful feedback. Local AI startup now shows progress, explains failures, and offers another attempt if the engine does not answer. Switching providers clears feedback from the previous engine.

• Automatic renames handle name conflicts. Watched-folder renames use the next available numbered name without overwriting an existing file. History explains the adjustment, and interrupted renames recover against the correct destination. Manual Review still lets you choose the name.

• Trial recovery shows the next step. If your email already has a trial or licence, NameQuick now offers Sign in and, where appropriate, Buy instead of an ineffective Retry. If a new trial takes longer to become available, the app waits briefly and then offers Sign in to recover it.

• Saved suggestions remain free to apply. You can apply a suggestion you already generated even after using your final Self-Managed trial rename.