v1.4.0 [YANKED]

Added

• settings.configure(config_dir) — new public function that overrides the
  configuration directory used by all settings and i18n functions; a single call
  redirects settings, i18n, and PatternPresets config I/O simultaneously;
  pass None to restore the platform default; intended for testing
• --config-dir DIR CLI option (both GUI and headless modes): overrides the
  configuration directory at startup before any settings access; intended for
  testing (noted in --help)
• Window geometry persistence for all windows and dialogs (except About):
  MainWindow, FileInfoWindow, HistoryDialog, SettingsDialog,
  ShortcutsDialog, and PatternHelpDialog save/restore size and position
  across sessions via WindowState.save_geometry / load_geometry
• LRU management for search, replace, and named-saves dropdowns: the most
  recently used entry is promoted to position 0 on each use; history is
  capped at 20 entries
• Mixed file-type replacement templates: when {im:…}, {vi:…}, or
  {au:…} tokens from more than one namespace appear in the same template,
  substitute() probes each namespace with can_read() at runtime — the
  applicable namespace follows strict behaviour (absent field without default
  → FieldResolutionError), non-applicable namespaces silently contribute
  "" without requiring a default
• {vi:…} field resolution now rejects files that have no video track even
  when MediaInfo returns a General track (e.g. JPEG files parsed by
  pymediainfo)
• UI layouts converted from Qt Designer .ui files to hand-written Python
  source (*_ui.py): main_window_ui.py, history_dialog_ui.py,
  settings_dialog_ui.py, about_dialog_ui.py — eliminates the Qt Designer
  file-parsing step at build time

Changed

• Test configuration isolation: conftest.py provides a config_dir autouse
  fixture that redirects all settings I/O to a per-test temporary directory via
  settings.configure(); the real ~/.config/pbrenamer is never touched
  during test runs; tests that need direct file access can request the
  config_dir fixture to obtain the path
• Named saves storage format migrated from a flat JSON dict (no ordering
  guarantee) to an ordered JSON list [{"name": …, …config…}, …]; legacy
  dict files are read transparently and upgraded on next write
• patternHelp.PatternHelpDialog: geometry now restored in showEvent
  (first paint) rather than in the constructor, matching the behaviour of all
  other secondary windows

Fixed

• audio_meta.can_read now returns False for video container files (MP4,
  MKV, MOV, …) that carry no audio-only track; previously a General track
  from pymediainfo could satisfy the read check, causing {au:…} fields to
  attempt — and silently fail — audio tag extraction on video files
• Main window geometry was not restored at startup: restoreGeometry() was
  called in __init__ before show(), so the window manager ignored it;
  moved to showEvent (fires once via _geometry_restored flag)
• Named saves combo list order reverted to sorted order on a subsequent save:
  Qt's QCompleter (auto-attached to the editable QComboBox) received
  textChanged events from the embedded QLineEdit even while
  combo.blockSignals(True) was active, and could queue a deferred
  activated callback that called use_save with a wrong index; fixed by
  blocking the QLineEdit signals separately and using setCurrentIndex
  instead of setCurrentText during _populate_named_saves
• Preview pane appeared and immediately disappeared on the first click in the
  directory tree: _on_directory_selected was called twice for the initial
  path, the second call with the same path clearing the just-populated
  preview; fixed with an early-return guard when the path has not changed

Removed

• Qt Designer .ui files (about_dialog.ui, history_dialog.ui,
  main_window.ui, settings_dialog.ui) — replaced by *_ui.py Python
  sources
• tools/extract_ui_strings.py — no longer needed; translatable strings are
  extracted directly from Python source via pybabel