[datlechin]

Summary

• Settings > Editor > Formatter: indent with spaces or tabs, indent width (or the editor's Tab width), keyword case (or the editor's), function case, comma position, line width, join condition placement, alias alignment, and a live preview in the editor theme.
• Import… and Export… a rules file. Export writes resolved values, so another Mac with a different Tab width or Keyword case formats identically.
• A .sql-formatter.json in a linked SQL folder applies to files opened from it: the nearest one from the file's folder up to the linked folder root. One that can't be read (bad value, not JSON, over 64 KB, not a regular file) stops Format Query with an error sheet naming it.
• Formatter settings sync as their own formatter settings record, so an older build re-uploading the editor blob can't reset them. A Mac upgrading to this build fetches the zone once to pick up a formatter record it skipped.
• Function case touches calls only (count(*), not a column named count), never on an engine whose dialect says function names are case-sensitive (ClickHouse), and never on a qualified name (dbo.len(x)).
• Defaults format exactly as before. Formatter fixes that ship with the rework:
  • commas inside a function call no longer break the SELECT list (concat(a,\n b))
  • FROM, WHERE, ORDER BY, JOIN inside parentheses stay inline (EXTRACT(YEAR FROM d), FILTER (WHERE …), STRING_AGG(… ORDER BY …))
  • CHARACTER SET, WITH TIME ZONE and ON DELETE CASCADE no longer break a CREATE TABLE column list
  • EXPLAIN SELECT and EXPLAIN UPDATE no longer come out as EXPLAINSELECT
  • FOR UPDATE, ON DUPLICATE KEY UPDATE a = VALUES(a) and GRANT SELECT, INSERT stay on their line
  • a keyword beside a dot is a name: e.end no longer splits into e. and END, t.key keeps its case

Test plan

• SQLFormatterServiceTests: exact output for every option, each fixed case, and idempotency under option sets. The fixed cases fail on main.
• SQLFormatterRulesTests: rules file round trip, strict decode errors, size cap, symlink to /dev/zero refused, settings resolution, export on one Mac and import on another formats identically, storage and reset, sync category and upgrade refetch, linked folder lookup.
• Old and new formatter run over a 40-statement corpus with default rules: byte-identical except the fixed cases.

Not in this PR

• A comment inside a SELECT list leaves a whitespace-only line and the next column loses its alignment (same on main).
• A subquery inside a SELECT list indents by block depth, not under its column (same on main).
• NATURAL LEFT JOIN breaks after NATURAL (same on main).
• Reset All Settings does not reset Notifications: AppSettingsManager.resetToDefaults() and AppSettingsStorage.resetToDefaults() skip it.

Fixes #2529