Move path formats and replacements logic into Library and shared util

[snejus]

Summary

This PR moves path format and replacement retrieval out of beets.ui into library/shared utilities.

Changes

• Added beets/util/pathformats.py with PF_KEY_DEFAULT, PF_KEY_QUERIES, and get_path_formats(subview).
• Added Library.path_formats and Library.replacements as cached_property values derived from config.
• Removed UI-owned get_path_formats/get_replacements and simplified _open_library() to construct Library without passing those values.
• Updated consumers (beets/library/models.py, beetsplug/bench.py, beetsplug/convert.py) to use the shared path-format utility.
• Refactored convert destination path calls through ConvertPlugin.get_item_destination.
• Replaced redundant UI tests with focused coverage in test/util/test_pathformats.py.
• Updated .git-blame-ignore-revs.

Why

• Keeps path/replacement behavior close to library internals instead of CLI orchestration.
• Preserves layered paths defaults by iterating config via Confuse items().
• Reduces duplication in convert destination handling.

[github-actions]

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[codecov]

Codecov Report

❌ Patch coverage is 93.02326% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.48%. Comparing base (6dd6251) to head (5c2c530).

Files with missing lines	Patch %	Lines
beets/library/library.py	90.90%	2 Missing ⚠️
beetsplug/convert.py	88.88%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #6647      +/-   ##
==========================================
+ Coverage   72.46%   72.48%   +0.02%     
==========================================
  Files         161      162       +1     
  Lines       20719    20727       +8     
  Branches     3280     3279       -1     
==========================================
+ Hits        15014    15024      +10     
+ Misses       4979     4978       -1     
+ Partials      726      725       -1     

Files with missing lines	Coverage Δ
beets/library/models.py	87.36% <100.00%> (+0.32%)	⬆️
beets/library/queries.py	100.00% <ø> (ø)
beets/ui/__init__.py	81.77% <100.00%> (-0.34%)	⬇️
beets/util/pathformats.py	100.00% <100.00%> (ø)
beetsplug/bench.py	28.57% <100.00%> (+1.74%)	⬆️
beetsplug/convert.py	74.77% <88.88%> (+0.22%)	⬆️
beets/library/library.py	93.18% <90.90%> (-1.27%)	⬇️

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[Copilot]

Pull request overview

grug see PR move path format + replace rules out of UI layer into library + shared util. grug like: library own library things, UI just drive.

Changes:

• add beets/util/pathformats.py helper for reading layered paths config (with query key expansion)
• make Library.path_formats + Library.replacements come from config via cached_property, and simplify UI _open_library()
• update convert + bench + tests to use new shared path format plumbing

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
test/util/test_pathformats.py	new focused pytest coverage for layered paths reading
test/ui/test_ui.py	remove UI-owned path format tests now covered elsewhere
test/test_library.py	make destination tests set explicit lib.path_formats to avoid depending on config defaults
beetsplug/convert.py	switch to shared get_path_formats + refactor destination calculation via helper
beetsplug/bench.py	use shared PF_KEY_DEFAULT constant for benchmark path formats
beets/util/pathformats.py	new shared path format constants + get_path_formats util
beets/ui/init.py	remove UI-owned get_path_formats/get_replacements; open Library without passing them
beets/library/queries.py	remove PF_KEY_DEFAULT constant from queries module
beets/library/models.py	import PF_KEY_DEFAULT from util instead of queries
beets/library/library.py	add cached_property path_formats + replacements derived from config