♻️ cleanup and uniformize RAG search implementation with other SDKs

[sebastianMindee]

Description

Types of changes

• Docs change / refactoring / dependency upgrade
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Requires a change to the official Guide documentation.

[Copilot]

Pull request overview

This PR refactors and aligns the V2 “search” surface with other SDKs by moving CLI search commands onto the generic Client.search(BaseSearchParameters) entrypoint, and by adding a dedicated CLI subcommand for searching RAG documents. It also updates related parsing/search model classes and extends the Sphinx docs to cover the new search modules.

Changes:

• Add search-rag-docs CLI subcommand and tests; wire it into the V2 CLI parser.
• Uniformize model search CLI to use client.search(ModelSearchParameters(...)) instead of client.search_models(...).
• Clean up/clarify search response/metadata/string rendering and add/adjust V2 docs sections.

Reviewed changes

Copilot reviewed 25 out of 25 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
tests/v2/test_cli.py	Registers and tests the new search-rag-docs CLI subcommand.
mindee/v2/search/rag_documents/rag_document_search_response.py	Tweaks RAG document search response formatting/docstrings.
mindee/v2/search/rag_documents/rag_document_search_parameters.py	Adds model_id validation and adjusts request parameter emission.
mindee/v2/search/models/model_search_response.py	Updates model search response docstrings/formatting.
mindee/v2/search/models/model_search_parameters.py	Makes request parameter emission skip falsy values.
mindee/v2/product/extraction/params/extraction_parameters.py	Fixes erroneous double assignments in request parameter building.
mindee/v2/parsing/search/search_response.py	Adjusts SearchResponse compatibility surface.
mindee/v2/parsing/search/search_models.py	Updates list string formatting (removes webhooks count line).
mindee/v2/parsing/search/search_model.py	Adds string helpers for search model formatting.
mindee/v2/parsing/search/pagination_metadata.py	Updates pagination metadata docstrings.
mindee/v2/parsing/search/model_webhook.py	Docstring clarification.
mindee/v2/parsing/search/base_search_response.py	Docstring clarification for body rendering.
mindee/v2/parsing/inference/rag_metadata.py	Adds missing field docstring.
mindee/v2/parsing/inference/inference_active_options.py	Refines option docstrings for clarity.
mindee/v2/commands/search_rag_documents_command.py	New CLI command implementation for RAG document search.
mindee/v2/commands/search_models_command.py	Uses client.search(ModelSearchParameters(...)) for uniform search handling.
mindee/v2/commands/cli_parser.py	Wires in search-rag-docs and refactors dispatch into _execute_command.
mindee/v2/commands/init.py	Exports SearchRagDocumentsCommand.
mindee/v2/client_options/base_search_parameters.py	Changes page/per_page serialization behavior for invalid values.
mindee/cli.py	Updates top-level CLI docstring to mention search-rag-docs.
docs/v2/search.rst	New V2 search documentation page.
docs/v2/parsing/search.rst	Documents Search RAG Document(s) parsing models.
docs/v2/mindee_http.rst	Removes response validation module section.
docs/v2/index.rst	Adds the new search docs page to the V2 index.
docs/v2/client_options.rst	Splits product vs search base parameter docs and updates references.

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