feat(storage): rename StorageAnalyticsApi to StorageAnalyticsClient

[mandarini]

Summary

Renames StorageAnalyticsApi to StorageAnalyticsClient to align with the established naming convention where user-facing entry points use the "Client" suffix.

Motivation

We have an architectural pattern where:

• "Client" = User-facing entry points (StorageClient, StorageVectorsClient)
• "Api" = Internal building blocks/lower-level APIs (VectorBucketApi, VectorIndexApi, VectorDataApi)

StorageAnalyticsApi was incorrectly using the "Api" suffix even though it's a top-level user-facing entry point accessed via storage.analytics. This inconsistency was confusing and didn't match the pattern used for vectors.

Changes

• Renamed file: StorageAnalyticsApi.ts → StorageAnalyticsClient.ts
• Renamed class: StorageAnalyticsApi → StorageAnalyticsClient
• Updated class JSDoc comments
• Updated import/export statements in StorageClient.ts and index.ts

Impact

• Breaking Change: Yes, but API is marked as @alpha (public alpha)
• Public API: Export name changes from StorageAnalyticsApi to StorageAnalyticsClient
• Internal: All references updated to use new name

Pattern Clarity

After this change, our naming is now consistent:

Class	Type	Usage
StorageClient	Client	Main entry point
StorageVectorsClient	Client	Vector operations entry point
StorageAnalyticsClient	Client	Analytics operations entry point (fixed)
VectorBucketApi	Api	Internal building block
VectorIndexApi	Api	Internal building block
VectorDataApi	Api	Internal building block (also exportable for advanced usage)

[mandarini]

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