⚡ Bolt: [performance improvement] Avoid deep cloning Serde intermediate Values

[cloudesize67-cmd]

💡 What
Replaced serde_json::from_value::<T>(val.clone()) and serde_yaml::from_value::<T>(val.clone()) with T::deserialize(val) in xdk-openapi/src/parser.rs for intermediate node parsing.

🎯 Why
When parsing sections of the OpenAPI spec before deserializing the entire document, calling from_value on a clone of the Value node deep-copies the entire intermediate dynamic object tree (allocating new arrays, objects, and strings). Using T::deserialize(&val) bypasses this clone by directly consuming the reference to the Value tree.

📊 Impact
Eliminates significant memory allocation and deep cloning during the first pass of OpenAPI component extraction. Should reduce overall parsing times for large OpenAPI specs.

🔬 Measurement
Verified functionality is unchanged with make test-generator. The performance difference can be seen when parsing extremely large specs containing massive schemas and components.

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PR created automatically by Jules for task 3844345141445516271 started by @cloudesize67-cmd

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