Use the logged-in account for YouTube Music searches

[MarvinSchenkel]

What does this implement/fix?

YouTube Music searches were performed without the user's credentials, while every other YTM call already authenticates. Because of that, YouTube could not apply the account and region context to search results, so tracks that are not playable for the user were still returned as regular results (and failed with "No playable items found" when played).

• Pass the account headers and (brand account) user to the ytmusicapi search call, like all other YTM helpers already do.
• Add a regression test that verifies search authenticates its client.

Note: the full fix for the linked issue also needs an upstream ytmusicapi change to expose the availability flag on search results (sigma67/ytmusicapi#1001); this PR is the server-side part and is safe on its own.

Related issue (if applicable):

• related issue YouTube Music search returns can_play=true item that fails with "No playable items found" support#6154

Types of changes

• Bugfix (non-breaking change which fixes an issue) — bugfix
• New feature (non-breaking change which adds functionality) — new-feature
• Enhancement to an existing feature — enhancement
• New music/player/metadata/plugin provider — new-provider
• Breaking change (fix or feature that would cause existing functionality to not work as expected) — breaking-change
• Refactor (no behaviour change) — refactor
• Documentation only — documentation
• Maintenance / chore — maintenance
• CI / workflow change — ci
• Dependencies bump — dependencies

Checklist

• The code change is tested and works locally.
• pre-commit run --all-files passes.
• pytest passes, and tests have been added/updated under tests/ where applicable.
• For changes to shared models, the companion PR in music-assistant/models is linked.
• For changes affecting the UI, the companion PR in music-assistant/frontend is linked.
• I have read and complied with the project's AI Policy for any AI-assisted contributions.
• I have raised a PR against the documentation repository targeting the main or beta branch as appropriate.

[musicassistant-bot]

✅ The title and description are good to go. Thanks!

[Copilot]

Pull request overview

Authenticates YouTube Music searches so results respect the user’s account, region, and brand account context.

Changes:

• Passes authentication headers and user context into searches.
• Adds regression coverage for authenticated client construction.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
music_assistant/providers/ytmusic/helpers.py	Authenticates the search client.
music_assistant/providers/ytmusic/__init__.py	Supplies provider account context.
tests/providers/ytmusic/test_helpers.py	Tests authenticated search setup.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

Suppressed comments (1)

music_assistant/providers/ytmusic/helpers.py:340

• [PROBLEM] This is a user-visible bug fix, but the PR is classified as Maintenance; select the Bugfix checkbox instead so CI applies the correct label and the change appears in the bug-fix release notes.

        ytm = ytmusicapi.YTMusic(auth=headers, language=language, user=user)

[Copilot]

Pull request overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated no new comments.

Suppressed comments (2)

music_assistant/providers/ytmusic/init.py:220

• [CRITICAL] This constant only invalidates the old anonymous entries once, but the newly cached results are account-specific: reconfiguring this provider with another username/cookie preserves its instance_id, and provider reload does not clear that cache (music_assistant/mass.py:1292-1295, 1035-1074), so the previous account/region's search results can be served for seven days. Include a non-secret account-context discriminator in the search cache key/checksum, or clear these entries when credentials change.

    @use_cache(3600 * 24 * 7, cache_checksum="authenticated_search_v1")  # Cache for 7 days

music_assistant/providers/ytmusic/helpers.py:340

• [PROBLEM] This is a user-visible bug fix, but the PR description selects “Maintenance / chore”; because CI derives the release label and release-notes category from that checkbox, select “Bugfix” instead.

        ytm = ytmusicapi.YTMusic(auth=headers, language=language, user=user)