ioloop: reject zero/negative timedelta in PeriodicCallback constructor#3683

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HrachShah wants to merge 4 commits into

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HrachShah:fix/periodic-callback-timedelta-validation

Commits on Jul 5, 2026

web, websocket: format ValueError messages in raise
Zo Bot
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netutil, simple_httpclient: format the ValueError messages in raise
Zo Bot
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web: format the stream_request_body TypeError message with the class
Zo Bot
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ioloop: validate positive callback_time in both timedelta and numeric branches
Zo Bot
committed