Note

Add vector search mode (incl. RANGE_QUERY and HYBRID variants) and largest-batch stats to FT.PROFILE; track these in HybridIterator and update tests.

• Profiling (FT.PROFILE):
  • Add Vector search mode for VECTOR and METRIC - VECTOR DISTANCE iterators.
  • In hybrid batches modes, print Batches number, Largest batch size, and Largest batch iteration.
• Hybrid iterator (src/hybrid_reader.*):
  • Track maxBatchSize and maxBatchIteration; initialize/reset on create/rewind and update during batch sizing.
• VecSim utilities (src/vector_index.*):
  • Add VecSimSearchMode_ToString and use it in profile output.
• Profile printing (src/index.c, src/profile.h):
  • Print vector search mode and batch stats in iterator profiles, including for range queries.
• Tests (tests/pytests/test_profile.py):
  • Update expected profile outputs and add coverage for vector search modes across SEARCH/AGGREGATE.

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