Count excluded Sync and Merge rows in chrome and completion totals

[baseGame]

Summary

Folder Sync and Folder Merge already skip excluded rows on execute and confirm, but chrome still counted the full plan. Sync completion used every preview row as the denominator, including rows sent as leave.

This change:

• Shows a suppressed count on Sync and Merge overwrite/delete confirm.
• Uses included-row totals for Sync progress, run status, inspector, and session info.
• Drops excluded rows from Folder Merge header, rules, and inspector counts.

Text Merge four-pane and live Registry hive are still out of scope.

Type of change

• Bug fix
• New feature
• Documentation
• Refactor
• Build, CI, or release

Validation

• corepack pnpm format:check
• corepack pnpm lint
• corepack pnpm stylelint
• corepack pnpm typecheck
• corepack pnpm exec vitest run src/views/FolderSyncView.test.ts src/views/FolderMergeView.test.ts

Local Rust clippy needs a newer Cargo than this host; Windows Quality CI covers that.

Checklist

• I kept the change focused.
• I added or updated tests where needed.
• I updated documentation for user-facing changes.
• I checked that no sensitive data is included.