Add advanced requests chapter

[RamonRDR]

Summary

• add Phase 9 · Chapter 03, Consuming HTTP APIs with requests, in English, Brazilian Portuguese, and Spanish
• target the current Requests 2.34.x series and validate against Requests 2.34.2
• extend requirements-external.txt with requests>=2.34,<2.35
• cover HTTP methods, URLs, query parameters, headers, JSON/form bodies, status handling, exception boundaries, connect/read timeouts, redirects, authentication, Sessions, connection reuse, prepared requests, TLS verification, private CA bundles, proxies, streaming, multipart upload, retry/idempotency safety, rate limiting, pagination, secret redaction, and deterministic HTTP testing
• add five deterministic executable HTTP examples backed by a local ThreadingHTTPServer, with no public-network dependency
• synchronize Phase 9 navigation, localized status documents, roadmaps, learning paths, project-structure docs, the openpyxl → requests handoff, and the approved-example manifest
• mark pandas, openpyxl, and requests complete within Phase 9, with pytest planned next

Chapter shape

• 83 numbered sections per language
• 40 fenced Python blocks, identical across EN / PT-BR / ES
• estimated study time: 270–360 minutes
• five new executable examples:
  • get_with_query.py
  • post_json.py
  • session_defaults.py
  • http_error_handling.py
  • stream_download.py

Dependency contract

• pandas>=3.0,<3.1
• openpyxl>=3.1,<3.2
• requests>=2.34,<2.35
• Requests 2.34.2 requires Python 3.10+
• repository validation continues on Python 3.13

Validation

• branch is based exactly on main at 0653a70ad5def3a0ef3d716ff2817ddc17d9f4e1
• final clean HEAD: f8c2eb2aa3eef5f171c4cfcbb26a4fb184ccb52d
• one focused commit, 28 changed files
• CPython 3.13.15
• pandas 3.0.5
• openpyxl 3.1.5
• Requests 2.34.2
• all 40 fenced Python blocks are identical across EN / PT-BR / ES
• all three chapters contain exactly 83 numbered sections
• all 11 repository quality-script tests passed
• all 171 approved Python examples passed
• exact output of all five requests examples passed
• 2,271 internal links across 231 Markdown files passed
• repository structure validation passed
• git diff --check passed
• temporary synchronization script and validation workflow were removed before the clean final commit
• pre-PR validation workflow passed: run 33279905031
• official PR Repository quality checks run #507 passed on the exact final HEAD

Review

• @codex review completed on f8c2eb2aa3
• Codex result: Didn't find any major issues
• no inline review threads are open

References

Primary references are the current Requests documentation, Quickstart, Advanced Usage and Developer Interface, plus PyPI and the official Requests release history. Version-sensitive behavior and important reliability/security boundaries are documented explicitly.

[RamonRDR]

@codex review

[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. 🎉

Reviewed commit: f8c2eb2aa3

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