fourmolu-checker v1.9.0

• add a read-only Show Fourmolu debug output Quick Fix for current
  check-failed diagnostics; it reruns Fourmolu with --debug using the same
  resolved context, omits stdout and discards stale results;
• keep debug output bounded to Fourmolu stderr in the Output channel without
  changing source files, diagnostics, hovers, previews or failure reports.

fourmolu-checker v1.8.0

• add Fourmolu Checker: Create Fourmolu Configuration, which previews
  Fourmolu's --print-defaults output before atomically creating a new
  fourmolu.yaml in a user-selected folder, without overwriting an existing
  file;
• refresh clean open Haskell files below the created configuration only after
  successful creation, without parsing the YAML or starting a workspace scan.

fourmolu-checker v1.7.0

• add a read-only Quick Fix that opens related official Fourmolu configuration
  documentation for recognized formatting categories, with a safe generic
  fallback that neither attributes a specific option nor modifies source or
  fourmolu.yaml.

fourmolu-checker v1.6.0

• add a source-free Copy Fourmolu failure details Quick Fix for execution,
  timeout, parser, configuration and formatted-output failures;
• retain only current, sanitized failure metadata for clipboard reports: source,
  formatted output, process stderr, configured arguments and absolute paths are
  never copied.

fourmolu-checker v1.5.1

• add a cross-platform real Extension Host diagnostic oracle that compares
  Fourmolu Checker's diagnostics and selected-block Quick Fixes with explicit,
  test-only logical blocks derived from live Fourmolu output;
• detect missing, unexpected and duplicate diagnostic ranges, message or
  severity mismatches, and report bounded failure details as CI artifacts;
• preserve Fourmolu's exact LF/CRLF choice when a whole-document Quick Fix or
  explicit full-file formatting edit is applied;
• cover every live Fourmolu 0.20.0.0 formatting message with a manifest,
  while retaining finalNewlineRemoved as a documented unit-only case.

fourmolu-checker v1.5.0

• add conservative, syntax-aware diagnostics for compatible pragmas,
  import/export lists, deriving and constraint contexts, guarded equations,
  expressions, function types and declarations;
• distinguish LF normalization, final newlines, import regrouping, Haddock and
  ordinary comments, indentation and declaration gaps;
• reserve module-documentation wording for comments attached to a module header;
• validate the expanded diagnostic categories against real Fourmolu
  0.19.0.0, 0.19.0.1, 0.20.0.0 and the scheduled latest workflow.

fourmolu-checker v1.4.2

• invalidate scoped diagnostics and refresh clean open files when
  fourmolu.yaml or a Cabal (.cabal) project input changes, without parsing
  either file or starting a workspace scan;
• add deterministic regression coverage proving block Quick Fixes reconstruct
  Fourmolu output exactly, including Unicode, end-of-file and line-ending cases;
• add late-result lifecycle coverage for save, document-change, configuration,
  project-input and close-event races.

fourmolu-checker v1.4.1

• add a Linux Remote SSH Extension Host smoke test that installs the packaged
  VSIX into a disposable remote VS Code Server and verifies a diagnostic,
  hover and selected-block Quick Fix with a remote Fourmolu fake;
• run this remote-host check in CI and document the separate manual Dev
  Container validation boundary.

fourmolu-checker v1.4.0

• add .hs-boot support to the default include globs, automatic checks,
  workspace checks, diagnostics, hovers and Quick Fixes;
• add real-Fourmolu boot-file fixtures to the command-contract and Extension
  Host compatibility suites.

fourmolu-checker v1.3.1

• run an Ubuntu Extension Host smoke test against the minimum VS Code version
  declared by the extension;
• add a weekly and manually triggerable latest-Fourmolu command-contract check
  that verifies the official GitHub release asset SHA-256 before execution.