Add persisted ride history feature

[davixcky]

Summary

• add persisted ride history storage in the location service (ride_history table) with APIs to create entries, list rides per session, and update driver plate per request
• update frontend backend handlers to store ride requests at dispatch time, expose a /ride-history response with total count + list, and backfill driver plate from driver dispatch notifications
• add home page UI to show ride history as a list view with pickup, dropoff, request time, driver plate, and total requested rides
• add a Signadot smart test for the new ride-history endpoint behavior in the hotrod-devmesh namespace path

Validation

• focused Go tests for changed services pass
• local end-to-end run validates /dispatch persists ride history and /ride-history returns expected fields/count
• Signadot smart test run fiiwfv46l4hs (existing dispatch test) completed in sandbox driver-plates
• Signadot smart test run fiixg1nmmznk (new ride-history test) executed against frontend.hotrod-devmesh.svc and reports expected 404 check failures on baseline/target, confirming endpoint expectation gap in deployed environment

Walkthrough artifacts

ride_history_feature_demo.mp4
Ride history initial state
Ride history final state

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