refactor(client): replace numeric duration values with datetime.timedelta

[0x676e67]

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[Copilot]

Pull request overview

This PR refactors the client API to use datetime.timedelta objects instead of numeric integer values (representing seconds) for all duration-related parameters. This affects both the Rust backend (which now uses std::time::Duration directly) and the Python frontend (which now accepts datetime.timedelta objects). The refactoring improves API clarity by making time units explicit and enables more precise duration specifications.

• Changed Rust type fields from Option<u64> to Option<Duration> for all timeout, TCP keepalive, and pool idle timeout parameters
• Updated Python type stubs to use datetime.timedelta instead of int for duration parameters
• Removed Duration::from_secs conversions in Rust code as Duration objects are now passed directly
• Updated examples to demonstrate the new datetime.timedelta usage

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
src/client/req.rs	Changed timeout and read_timeout fields from u64 to Duration; removed Duration::from_secs conversions
src/client.rs	Changed all timeout, TCP keepalive, and pool timeout fields from u64 to Duration; removed Duration::from_secs conversions
python/rnet/init.pyi	Updated type hints from int to datetime.timedelta for all duration parameters; includes unrelated changes (Message.json return type, formatting)
python/rnet/tls.py	Added str type support to KeyLog.file() path parameter (unrelated to main PR purpose)
python/examples/exceptions.py	Updated timeout usage to datetime.timedelta
python/examples/blocking/get.py	Updated timeout usage to datetime.timedelta
python/examples/orig_headers.py	Added null check for WebSocket message (unrelated to main PR purpose)
python/examples/keylog.py	Removed unused import (unrelated cleanup)
python/examples/blocking/proxy.py	Updated proxy usage to Proxy.all() (unrelated to main PR purpose)
python/examples/dns_override.py	Deleted file

Comments suppressed due to low confidence (1)

python/examples/keylog.py:7

• The result of KeyLog.file is used even though it is always None.

    client = Client(keylog=KeyLog.file("keylog.log"))

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