E2E Test Selection:
This PR makes significant changes to the PerpsController and related perps infrastructure:

1. PerpsController changes (CRITICAL):

   • Refactored method action handler registration from constructor to init() method with a guard flag
   • Extracted provider creation logic into a new #createProviders() method
   • Changed error message detection for cancellation flows
   • These changes affect controller initialization and could impact perps functionality

2. Provider interface changes:

   • Added fetchHistoricalCandles() method to PerpsProvider interface
   • Updated HyperLiquidProvider to implement this method
   • Refactored MarketDataService to use the new provider method directly

3. Constants and configuration changes:

   • Reduced gas limit from 150000 to 100000 for deposits
   • Added new constants (ESTIMATED_FEE_RATE, SPOT_ASSET_ID_OFFSET)
   • Replaced hardcoded values with constants throughout services

4. Export refactoring:

   • Changed from export * to explicit named exports in index.ts and types
   • This is a significant change that could affect imports

5. amountConversion.ts:

   • Removed hex wei conversion support (returns '$0' for hex values)
   • Removed bnjs4 dependency

Tag Selection Rationale:

• SmokePerps: Primary tag - all changes are in the perps controller and related services. Tests Add Funds flow, balance verification, and perps interface functionality.
• SmokeWalletPlatform: Required per tag description when selecting SmokePerps (Perps is a section inside Trending tab). Also covers activity display which may be affected by transaction changes.
• SmokeConfirmations: Required per tag description when selecting SmokePerps (Add Funds deposits are on-chain transactions). The gas limit change (150000 → 100000) could affect deposit transaction confirmations.

The changes are isolated to the perps domain (Phase 6 controller) with no direct impact on core Engine initialization or other controllers. The risk is medium due to the controller initialization refactoring and gas limit changes.

Performance Test Selection:
The changes directly affect the PerpsController initialization, provider creation, and trading services. The refactoring of handler registration from constructor to init() method, the gas limit reduction for deposits, and the new fetchHistoricalCandles method could all impact perps performance. The @PerformancePreps tag covers perps market loading, position management, add funds flow, and order execution - all areas touched by these changes.