v0.20.0

Added

• Server panel listing live database sessions, with lock waits and their
  blockers marked and a guarded cancel/terminate per session; opens from the
  status-bar connection chip. The ClickHouse mutations list now lives here too.
• Show DDL on any schema-tree object, in a read-only highlighted tab with Copy
  and "Open as query".
• Schema comparison: diff the current schema against another, with type-aware
  column matching and additive reconciling DDL generated into a query tab.
• Connection health report for SQL engines: sizes, unused indexes, missing
  keys and other per-engine checks, saved per connection.
• Watch mode: re-run a tab's read-only query every few seconds, with changed
  cells flashing, a row-count delta, and the scroll position kept.
• The schema tree now shows materialized views, functions, procedures,
  triggers, sequences and user-defined types, loaded lazily per group.
• In-grid editing on ClickHouse, with per-change safety checks and honest
  per-statement outcomes instead of a claimed all-or-nothing success.
• The ClickHouse submit confirmation shows the real statements and matched row
  counts; a change matching several rows needs explicit approval.
• Mutations panel for ClickHouse listing background work still applying after
  a submit, with per-row cancel and a status-bar indicator.
• Tables with a composite primary key are now editable on PostgreSQL, MySQL
  and SQLite.
• Bulk import into a ClickHouse table from the result toolbar.
• Search across every setting, with each row showing its settings.toml key,
  a modified marker, and a per-setting Reset.
• Settings pages for Redis and MongoDB.
• Stored routines can be written in the editor: a BEGIN … END body runs as
  the one statement it is, and DELIMITER $$ is honoured.
• Groundwork for translating the interface: a Language setting under
  Appearance (English-only for now), with per-string fallback to English.

Changed

• The app is now called RED, in capitals, everywhere it names itself; saved
  connections, settings and passwords carry over unchanged.
• Settings are reorganised by topic: [grid] is now [data], [redis] is
  [kv], and [query] split into [sql] and [safety]; existing files
  migrate automatically.
• Row density, page size and maximum cell size now apply to the Redis key
  browser and MongoDB document grid as well as SQL results.
• The reference settings file documents every section again.
• Editing affordances follow the table: a table the engine cannot modify shows
  a one-line reason instead of edit controls, and computed columns are never
  offered for editing.
• The AI assistant no longer claims a multi-statement changeset always commits
  together or not at all, which was untrue on ClickHouse.

Fixed

• Writes and DDL run from the editor now resolve unqualified names in the
  tab's database, fixing MySQL's "No database selected" on CREATE TRIGGER.
• On MySQL 8, a query no longer leaves its database bound to the pooled
  connection for whatever runs next.
• Views, triggers, functions and procedures can be edited from the tab showing
  their definition, through the usual confirmation and read-only lock.
• Clicking a trigger, routine, sequence or type in the schema tree opens its
  definition, the way clicking a table opens its rows.
• Creating a trigger, routine, sequence or type now refreshes the schema tree
  immediately instead of only after a reconnect.
• The editor no longer underlines trigger and routine syntax as unknown
  columns, and highlights those words as keywords.
• Staging more than six new rows no longer hides the ones past the sixth: the
  change-set zone below the grid scrolls through the whole set.