[iLevyTate]

Follow-ups from the hands-on Mac report: items 7, 8, 11, 12, 14 and 15. Stacked on #122, so this PR also shows #122's commit (4b8dd95) until that one merges. The new work is the single commit c53ee4c.

What changes

Folder matching (items 7 and 8)

• A category counts as a misspelling of a Smart Folder name only within an allowance that grows with the name's length: none under four characters, one per four, three at most. The fixed allowance of two sent a file labeled "SEO" to a folder named "Web" or "Dev".
• A generic category ("document", "file", "image") with no Uncategorized folder returns no match instead of the first folder in the list. The three callers already handle no match.
• A strategy suggestion says what named its folder (category, file type or purpose). "Using Date-Based organization method" described a folder that was named after the analysis category.
• The analysis cache key uses each Smart Folder's whole description. It used the first 64 characters, so an edit further in returned the answer for the old wording.

Organize preview (item 12)

• handlePreviewOrganize throws when the dry run fails or is refused and returns the files the batch sends to one name. No main-process change.
• The Preview button shows that it is working, ignores a second press while the first is running, and gives the reason when the preview cannot be built (it said only "Nothing to preview.").
• The preview marks files that would get the same name in the same folder, says the move will not start, and keeps Move off while any exist.

Discover (item 11)

• Progress reads "Analyzing 3 of 10 files" and "30% complete"; the second percentage badge is gone.
• The notice for an analysis that continues after a restart reads "Continuing the analysis that was interrupted: N files left" and stays for six seconds.

Model download (item 15)

• Speed and time left are the rate over the last ten seconds, reported once three seconds of data exist. They were the average since the request was created, shown after one second.
• The wizard row reads "Calculating speed…" while bytes arrive without a speed.

Docs (item 14)

• The Install Guide, the README and the release-notes preamble in release.yml say which Mac file to take (mac-arm64 for Apple Silicon, mac-x64 for Intel) and how to check in About This Mac.

Not in this PR

• Item 7: the date-based method still scores nearly every file 60%, and a low-scoring file is not sent to the default folder. Both change where files land and wait for a reproduction with real models.
• Item 6, items 9 and 10, and the leftovers of items 2, 3, 4, 8 and 13.

Checks

Windows 11 x64, on c53ee4c's tree:

• npm run local:gate, every step: 956 test suites, 14126 tests passed, 11 skipped, coverage thresholds met, production build, native modules.

• The eight Playwright smoke specs on a clean dev build: 101 of 101.

• The new release-notes line from release.yml, run by hand in Windows PowerShell 5.1 with a sample version: one list entry with both file names filled in. The workflow file still parses as YAML.

Not checked: macOS, a packaged build, and the release workflow itself (it runs only in a release, under PowerShell 7).