Refactor shared constants and remove deprecated function

[BeckettFrey]

This pull request refactors the handling of constants to a formal constants.py per module and migrates some constants as formal examples. Some legacy code is removed for clarity and maintainability. The most important changes are grouped below:

Centralization and Standardization of Constants:

• Introduced src/voxkit/storage/constants.py to hold all storage-related constants, including STORAGE_ROOT, MODELS_ROOT, DATASETS_ROOT, ALIGNMENTS_ROOT, and SUPERSET_AUDIO_EXTENSIONS. Updated all relevant imports to use this new module instead of the old config.py. [1] [2] [3] [4] [5] [6] [7]
• Added SUPERSET_AUDIO_EXTENSIONS as the canonical set of supported audio file extensions and replaced hardcoded sets throughout the codebase with this constant. [1] [2] [3] [4] [5] [6] [7] [8]

Configuration Module Improvements:

• Created src/voxkit/config/constants.py for configuration-related constants, including DEFAULT_HELP_URL, and updated references throughout the codebase. [1] [2] [3] [4] [5] [6] [7]
• Removed the legacy get_config_path function and its usages, simplifying the configuration API. [1] [2] [3]
• Updated the AppConfig dataclass to use DEFAULT_HELP_URL and allow help_url to be None by default. [1] [2]

Engine Tool Types and Typing Improvements:

• Introduced src/voxkit/engines/constants.py with the AVAILABLE_TOOLS Literal type, replacing the previous ToolType. Updated all usages and imports accordingly. [1] [2] [3] [4] [5] [6]

Removal of Deprecated or Redundant Code:

• Removed the old src/voxkit/storage/config.py file, consolidating all storage constants into constants.py.
• Cleaned up legacy or unused variables and references, such as HELP_URL in startup_config.py. [1] [2]

These changes improve maintainability, consistency, and clarity throughout the codebase.

[Copilot]

Pull request overview

This PR centralizes previously scattered “constants” into dedicated module-level constants.py files (storage/config/engines), updates imports/usages across the codebase (including tests), and removes deprecated configuration helpers to simplify the public config API.

Changes:

• Introduced new constants modules for storage, config, and engines; updated imports throughout.
• Standardized supported audio file extensions via SUPERSET_AUDIO_EXTENSIONS and replaced hardcoded extension sets.
• Removed deprecated get_config_path usage and tightened config file resolution behavior.

Reviewed changes

Copilot reviewed 21 out of 21 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
tests/storage/test_setup.py	Updates test import to new storage constants module.
tests/storage/test_models.py	Updates test imports to new storage constants module.
tests/engines/test_engine_manager.py	Updates comment to reflect AVAILABLE_TOOLS rename.
tests/config/test_app_config.py	Removes get_config_path usage and updates help_url expectation.
src/voxkit/storage/utils.py	Switches STORAGE_ROOT import to storage.constants.
src/voxkit/storage/models.py	Switches MODELS_ROOT import to storage.constants.
src/voxkit/storage/datasets.py	Uses SUPERSET_AUDIO_EXTENSIONS and updates storage constants imports.
src/voxkit/storage/constants.py	New module consolidating storage constants and audio extension set.
src/voxkit/storage/config.py	Removes legacy storage constants module.
src/voxkit/storage/alignments.py	Switches to storage.constants and reuses centralized audio extensions.
src/voxkit/gui/pages/pipeline/viewer_stacker.py	Reuses centralized audio extensions constant in GUI pipeline viewer.
src/voxkit/engines/constants.py	New module defining AVAILABLE_TOOLS Literal for engine tool typing.
src/voxkit/engines/init.py	Updates engine manager typing/docs and exports AVAILABLE_TOOLS.
src/voxkit/config/startup_config.py	Removes legacy HELP_URL constant and updates storage import.
src/voxkit/config/constants.py	New module defining DEFAULT_HELP_URL.
src/voxkit/config/app_config.py	Uses DEFAULT_HELP_URL, removes get_config_path, and removes legacy config-root lookup for config files.
src/voxkit/config/init.py	Exposes DEFAULT_HELP_URL and removes HELP_URL export.
src/voxkit/analyzers/default_analyzer.py	Reuses centralized audio extensions constant.
src/voxkit/analyzers/clip_duration_statistics.py	Reuses centralized audio extensions constant.
src/voxkit/analyzers/audio_format_profile.py	Reuses centralized audio extensions constant.
README.md	Refactors badge/link formatting and updates displayed badges/links.

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