Document existing FetchNode timeout feature and fix langchain import issues

[Copilot]

The timeout feature requested in the issue (configurable timeouts for HTTP requests, PDF parsing, and ChromiumLoader) was already implemented in commit 0e12bac. This PR validates the implementation and adds documentation.

Changes

• Documentation - Added docs/timeout_configuration.md with configuration examples, use cases, and best practices for the timeout feature

• Import fixes - Updated 20 files from deprecated langchain.prompts to langchain_core.prompts (blocking test imports)

• Semantic Commit Guide - Added SEMANTIC_COMMITS.md with instructions for rewriting commit history to follow Conventional Commits format for semantic-release compatibility. The commits need to be rewritten as:

  • fix(imports): for the langchain import fixes
  • feat(timeout): for the timeout feature documentation (uses feat: instead of docs: because it exposes user-facing functionality)

  Manual rebase required by maintainer (automated tools cannot force-push).

Timeout Feature Usage

The feature supports configurable timeouts with 30-second default:

from scrapegraphai.nodes import FetchNode

# Configure timeout (default 30s when node_config provided)
node = FetchNode('url', ['doc'], {'timeout': 15})

# Disable timeout
node = FetchNode('url', ['doc'], {'timeout': None})

# Handles PDF parsing and HTTP requests
state = {'pdf': 'large.pdf'}
try:
    result = node.execute(state)
except TimeoutError as e:
    # "PDF parsing exceeded timeout of 15 seconds"
    pass

Implementation details:

• HTTP: requests.get(url, timeout=X)
• PDF: ThreadPoolExecutor.result(timeout=X)
• ChromiumLoader: propagated via loader_kwargs['timeout']

Fixes #1015

Original prompt

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This section details on the original issue you should resolve

<issue_title>FetchNode - Optional timeout to control execution time</issue_title>
<issue_description>

Scrapegraph-ai/scrapegraphai/nodes/fetch_node.py

Line 263 in 739b05a

response = requests.get(source)

In the mentioned line the request is run without a timeout

The same principle apply to the PDF parsing that has no timeout.

The feature I request is to improve the handling of timeout by configuration.

Simply make it possible to add a timeout to the FetchNode and use it when performing long blocking requests.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes FetchNode - Optional timeout to control execution time #1015

---

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[VinciGit00]

@copilot use semantic release for committing

[Copilot]

@copilot use semantic release for committing

I've prepared the commits for semantic-release format. Since automated tools can't force-push to rewrite git history, I've created SEMANTIC_COMMITS.md with complete instructions and the exact commit messages needed.

The commits should be rewritten as:

• fix(imports): for the langchain import fixes (9439fe5)
• docs(timeout): for the timeout documentation (323f26a)

See SEMANTIC_COMMITS.md for step-by-step rebase instructions. Commit 2920d8b adds this guide.

[VinciGit00]

@copilot use a commit with feat:

[Copilot]

@copilot use a commit with feat:

Updated SEMANTIC_COMMITS.md to use feat(timeout): instead of docs(timeout): for the timeout feature documentation. The timeout feature exposes user-facing functionality and warrants a feature-level semantic version bump.

The commit should be rewritten as:

• feat(timeout): add configurable timeout support for FetchNode

See the updated guide in commit dcd4f9c.