rm-hull / fuel-prices-api / 22067620843

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feat: Allow limiting price history per fuel type (#6)

* feat: Allow limiting price history per fuel type

This change introduces the ability to restrict the number of
historical fuel price records returned for each distinct
fuel type during a spatial search.

A new optional query parameter, `limit`, is added to the
search endpoint:

*   The parameter controls how many of the most recent price
    updates are returned for each specific fuel type at a
    given station.
*   The default limit is 1 (only the single most recent
    price per type).

The underlying SQL uses a window function partitioned by
`fuel_type` to enforce this limit efficiently in the
repository layer.

* Update internal/sql/search_prices.sql

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

* style: Add `limit` parameter to HTTP request

Added the optional `limit=5` query parameter to the
`Search fuel prices by bounding box` test request.

This ensures the test script reflects common usage patterns,
especially when testing pagination or result size limits.

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Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

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