### Summary
@JinHai-CN — the agent tool you asked for in #18478, as its own PR.
Adds `YouComSearch` to the agent tool set, modeled on the Keenable tool
(#16233) rather than Querit's: You.com exposes a small parameter
surface, so this needs a two-field form rather than a bespoke form
suite. **+594 lines**, close to Keenable's +392 and well under Querit's
+3527.
Independent of #18478. That PR wires You.com into chat retrieval; this
one is the agent canvas node. Neither depends on the other and they
share no lines.
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Co-authored-by: Brian Sparker <brainsparker@users.noreply.github.com>
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
