Feature: Add missing `QueryContext` methods to Python SDK

[zTgx]

Description

The Python QueryContext is missing several configuration methods available in the Rust API:

Rust Method	Python	Status
with_include_reasoning()	—	Missing
with_depth_limit()	—	Missing
with_timeout_secs()	—	Missing
with_force_analysis()	—	Missing

Current Python QueryContext (python/src/context.rs:241-272) only has:

• with_doc_ids()
• with_workspace()
• with_max_tokens()

Expected Behavior

ctx = (QueryContext("complex query")
    .with_doc_ids([doc_id])
    .with_include_reasoning(True)
    .with_timeout_secs(60)
    .with_depth_limit(10))

[zTgx]

legacy code!