shokollm 81f3342365 fix: add error logging to simulate engine to prevent silent failures
Errors during price fetching are now logged and stored in an errors list,
allowing users to see error count/warnings in simulation results.

Acceptance Criteria:
- [x] Errors are logged (not silently swallowed)
- [x] User can see error count/warnings in simulation results
- [x] Simulation completes even if some price fetches fail (graceful degradation)
2026-04-09 10:16:22 +00:00
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