chore: Market Insights - update service and type

[zone-live]

Explanation

Fix searchDigest response parsing, the /asset-summary API changed its envelope key from digest to summary. Replaced MarketInsightsDigestEnvelopeStruct with MarketInsightsSummaryEnvelopeStruct so market insights reports are correctly unwrapped.
Adds perpsAssetId to RelatedAsset, new field for resolving Perps icon URLs on the client (supersedes the deprecated hlPerpsMarket).

References

Checklist

• I've updated the test suite for new or updated code as appropriate
• I've updated documentation (JSDoc, Markdown, etc.) for new or updated code as appropriate
• I've communicated my changes to consumers by updating changelogs for packages I've changed
• I've introduced breaking changes in this PR and have prepared draft pull requests for clients and consumer packages to resolve them

---

Note

Medium Risk
Medium risk because it changes the /asset-summary request shape from caipAssetType/hlPerpsMarket to a single asset parameter, which could break lookups if the backend or clients rely on the old query keys.

Overview
AiDigestService.searchDigest now always calls /asset-summary?asset=<identifier> and drops the CAIP-19 vs perps-symbol branching (and the isCaipAssetType dependency).

Tests, JSDoc/types, and the package changelog are updated to reflect the universal asset parameter and clarify that RelatedAsset.hlPerpsMarket can represent any HyperLiquid market identifier (including synthetic perps like xyz:TSLA).

^{Written by Cursor Bugbot for commit 6a77da3. This will update automatically on new commits. Configure here.}