CMRT 33: Track table CMRT column polish, hotcue copy/add, and manual canonical re‑election

[Swarnadip-Kar]

Adds the user‑facing CMRT features to the library view and track menu:

• A CMRT column that shows the grouping ID (padded to 4 digits), a colour‑spectrum swatch representing match percentage, and a “No CMRT group” label for solo (single‑member) groups.
• Custom sorting of the CMRT column so that grouped tracks sort together in numeric order.
• Copy/Add CMRT Hotcues actions in the Hotcues submenu, with the existing overlay‑active gate.
• Disable Clear > Hotcues while a CMRT overlay is active, matching the safety gate already used by the hotcue copy actions.
• “Make Canonical (CMRT)” action in the Analyze menu that lets the user manually promote a non‑canonical member to canonical, reusing the same re‑election logic the automatic AcoustID path uses.
• Now live decks are refreshed directly - after re-election.

Depends on: cmrt-use-cmrt-beatgrid (#47)

[coveralls]

Coverage Report for CI Build 29161956439

Coverage decreased (-0.1%) to 30.068%

Details

• Coverage decreased (-0.1%) from the base build.
• Patch coverage: 424 uncovered changes across 10 files (5 of 429 lines covered, 1.17%).
• 16 coverage regressions across 6 files.

Uncovered Changes

File	Changed	Covered	%
src/widget/wtrackmenu.cpp	157	0	0.0%
src/musicbrainz/cmrtgroupingservice.cpp	52	0	0.0%
src/library/dlgtrackinfo.cpp	47	0	0.0%
src/track/track.cpp	44	0	0.0%
src/library/basesqltablemodel.cpp	38	1	2.63%
src/library/tabledelegates/cmrtdelegate.cpp	29	0	0.0%
src/library/dao/trackdao.cpp	24	1	4.17%
src/library/basetracktablemodel.cpp	22	0	0.0%
src/library/basetracktablemodel.h	12	0	0.0%
src/library/librarytablemodel.cpp	4	3	75.0%

Coverage Regressions

16 previously-covered lines in 6 files lost coverage.

File	Lines Losing Coverage	Coverage
src/analyzer/trackanalysisscheduler.cpp	4	64.74%
src/widget/wtrackmenu.cpp	4	0.0%
src/musicbrainz/cmrtgroupingservice.cpp	3	0.0%
src/library/basetracktablemodel.cpp	2	8.16%
src/library/dlgtrackinfo.cpp	2	0.0%
src/library/dao/trackdao.cpp	1	44.05%

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Coverage Stats

Relevant Lines:	117840
Covered Lines:	35432
Line Coverage:	30.07%
Coverage Strength:	58452.49 hits per line

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💛 - Coveralls