feat(crewai-tools): add highlights to ExaSearchTool, rename from EXASearchTool

* feat(crewai-tools): add highlights to ExaSearchTool, rename from EXASearchTool

- Add a highlights init param so agents can get token-efficient excerpts instead of full pages
- Rename EXASearchTool to ExaSearchTool; keep EXASearchTool as a deprecated alias so existing imports keep working
- Update the docs and example to use highlights as the recommended option
- Add a small note that says Exa is the fastest and most accurate web search API
- Add tests for the new highlights param and the deprecation alias

* fix(crewai-tools): import order and module-level Exa for tests

- Reorder std-lib imports so ruff is happy with force-sort-within-sections.
- Import Exa at module level (with a fallback) so the existing test mocks resolve.
  The lazy install prompt still works if exa_py is missing.
- Allow content and summary to be a dict, matching highlights.
- Trim test file to the cases this PR introduces (highlights param and the
  EXASearchTool deprecation alias). Existing init-shape tests stay.

Co-Authored-By: ishan <ishan@exa.ai>

* chore(crewai-tools): drop self-explanatory comment on schema alias

Co-Authored-By: ishan <ishan@exa.ai>

* docs(crewai-tools): default highlights to True, drop summary from examples

Co-Authored-By: ishan <ishan@exa.ai>

* docs(crewai-tools): simplify highlights examples to highlights=True

Co-Authored-By: ishan <ishan@exa.ai>

* feat(crewai-tools): add x-exa-integration header for usage tracking

Co-Authored-By: ishan <ishan@exa.ai>

* docs(crewai-tools): add Exa MCP section and resources links

Co-Authored-By: ishan <ishan@exa.ai>

---------

Co-authored-by: ishan <ishan@exa.ai>
Co-authored-by: Greyson LaLonde <greyson.r.lalonde@gmail.com>
Co-authored-by: Lorenze Jay <63378463+lorenzejay@users.noreply.github.com>

docs/ko/concepts/tools.mdx

@@ -132,7 +132,7 @@ crew.kickoff()
 | **DirectorySearchTool**           | 디렉터리 내에서 검색하는 RAG 도구로, 파일 시스템을 탐색할 때 유용합니다.                              |
 | **DOCXSearchTool**                | DOCX 문서 내에서 검색하는 데 특화된 RAG 도구로, Word 파일을 처리할 때 이상적입니다.                   |
 | **DirectoryReadTool**             | 디렉터리 구조와 그 내용을 읽고 처리하도록 지원하는 도구입니다.                                        |
-| **EXASearchTool**                 | 다양한 데이터 소스를 폭넓게 검색하기 위해 설계된 도구입니다.                                          |
+| **ExaSearchTool**                 | 다양한 데이터 소스를 폭넓게 검색하기 위해 설계된 도구입니다.                                          |
 | **FileReadTool**                  | 다양한 파일 형식을 지원하며 파일에서 데이터를 읽고 추출할 수 있는 도구입니다.                         |
 | **FirecrawlSearchTool**           | Firecrawl을 이용해 웹페이지를 검색하고 결과를 반환하는 도구입니다.                                    |
 | **FirecrawlCrawlWebsiteTool**     | Firecrawl을 사용해 웹페이지를 크롤링하는 도구입니다.                                                  |