feat: Introduce new Azure Cosmos DB Change Feed Scaler#7557

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yash2710 wants to merge 13 commits intokedacore:mainfrom

yash2710:feat/azure-cosmosdb-scaler

Commits on Apr 28, 2026

feat: Introduce new Azure Cosmos DB Change Feed Scaler

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fix: complete E2E test with actual Cosmos DB document insertion

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refactor: use total lag metric instead of partition count

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feat: scale to max on error instead of returning error

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fix: use larger fallback value when no cached partition count

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feat: add comprehensive logging throughout CosmosDB scaler

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fix: return error when no cached partition count on failure

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fix: create Cosmos DB database and containers in E2E test setup

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fix: address PR review comments for CosmosDB scaler

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fix: resolve CosmosDB resource URL via cloud environment instead of hardcoding

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refactor: move lease defaults to Validate() on metadata struct

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fix: address PR review - json.Marshal for processorName, return 0 on 410, propagate errors

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Merge remote-tracking branch 'origin/main' into feat/azure-cosmosdb-scaler
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