Centralized structured logging, enhanced error handling, and direct Wallpaper Engine downloads via steamcmd

[Kasper24]

• feat: implement structured logging with Pino across application

  • Add Pino logger with pretty printing and environment-based log levels
  • Replace all console.log/error/warn calls with structured logging
  • Add comprehensive logging to all TRPC routes and main process
    functions:
    • API routes: pexels, pixabay, unsplash, wallhaven, wallpaper-engine
    • Core functionality: file operations, monitor detection, settings
      management
    • Wallpaper operations: search, set, thumbnail generation, theme
      generation
  • Include contextual metadata (input parameters, error details,
    execution status)
  • Add operation start/success/failure logging patterns for better
    observability
  • Fix error message in unsplash router (was incorrectly showing "Pexels
    API")
  • Improve error handling in wallpaper search and thumbnail generation

• docs: update screenshot

• fix: rename Pixabay filter key and title from color to colors in images and videos tabs

• refactor: add scalingOptions support to all discover wallpaper source tabs

  • Added scaling options (stretch, fit, fill, center, tile) to
    Pexels, Pixabay, Unsplash, Wallhaven, and Wallpaper Engine tabs.

• chore: remove react-intersection-observer dependency and related imports

• fix: ensure API key is typed as string when retrieving from settings

• refactor: improve generic type naming for wallpaper-related components and utilities

  • Renamed generic T to more descriptive TWallpaper across
    wallpaper-related components, hooks, and types.
  • Updated OnWallpaperApply and OnWallpaperDownload to use TWallpaper for
    better readability and clarity.
  • Applied changes consistently in paginateData, dialog components, grid
    components, and TRPC route types.

• fix(types): add explicit generics to useQuery calls for settings and configuration hooks

  • Ensured useQuery in useConfiguration and useSettings explicitly specifies the return type.
  • Cast client.settings.get.query results to the appropriate DotNotationValueOf<SettingsSchema, TConfigKey> or generic T.
  • Updated configValue in useWallpaperData params to be optional for better type safety.

• refactor: use env-paths for cache, log, and temp directories

  • Added env-paths dependency.
  • Updated logger, wallpaper set, and thumbnail modules to use
    platform-appropriate directories from env-paths("walltone").
  • Replaced hardcoded os.homedir() + .cache paths with paths.cache,
    paths.log, and paths.temp.
  • Removed unnecessary os imports.

• refactor: set explicit log levels for streams and enable debug in development

  • Added level to each stream in pino.multistream for both production and
    development.
  • Changed default log level from info to debug in development for more
    verbose output

• refactor: Implement direct download via steamcmd
  This commit introduces direct downloading for Wallpaper Engine
  wallpapers using steamcmd and overhauls the app's logging and error
  handling.

  Wallpaper Engine Direct Downloads

  • Replaces the previous "subscribe" method with a direct download flow.
  • When applying a Wallpaper Engine wallpaper, a new dialog prompts the
    user for their Steam credentials (username, password, and guard code).
  • The backend now uses steamcmd to download the workshop item
    directly, providing a more reliable way to acquire wallpapers.
  • The steamcmd dependency has been added to the packaging
    configurations.

  Centralized Logging and Error Handling

  • Implemented a global tRPC logging middleware that automatically
    logs all API calls, including duration and sanitized inputs (redacting
    keys like password and apiKey). This removes redundant logging
    statements throughout the codebase.
  • A new event-based error system has been added. If a wallpaper
    fails to apply on the backend, an event is emitted to the frontend,
    which displays a toast notification to the user with the error details.

  Refactoring and Other Improvements

  • Remote Wallpaper Caching: Wallpapers from all remote sources
    (Pexels, Unsplash, etc.) are now downloaded to a local cache before
    being applied, improving reliability.
  • Code Organization:
    • Centralized all application paths into a new lib/paths.ts
      module.
    • Extracted the DynamicControls component and
      useMonitorSelection hook into their own files for better code
      structure.
  • New Setting: Added a "Kill Wallpaper on Exit" option in the
    settings to terminate wallpaper processes when the application is
    closed.
  • Improved execute Utility: The command execution utility has been
    refactored for cleaner logging and adds support for stdout/stderr
    callbacks.