Update June 2026 API fixtures

[MagicTheDev]

Summary

• Update MockAPI battlelog schema and fixtures for the June 2026 Clash of Clans API fields, including uppercase battle types, Legend battle entries, opponent details, battle duration, and battle timestamp.
• Refresh league/CWL fixtures for full-date season identifiers, Legend tier naming, ranked player leagueTier, current war duration, and current battle modifier values.
• Add focused unittest coverage for the changed response fixtures and generated OpenAPI schema.

Validation

• uv run python -m unittest discover -s tests
• python3 -m unittest discover -s tests
• python3 -m compileall app tests
• git diff --check

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Use league-tier icon assets in player rankings

For /locations/{id}/rankings/players, the newly added leagueTier object for Legend I reuses the legacy league.iconUrls (/leagues/...) instead of the tier-specific assets. The same tier in LISTLEAGUETIERS.json and the league-season rankings fixture uses /leaguetiers/..., so clients testing ranking UI against this endpoint will receive inconsistent artwork for the same leagueTier.id and can render the wrong badge.

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