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#2697: Add per-session reasoning effort support in WebUI

We'll provision a sandbox, run an agent against the issue, and open a draft PR. You can pull the branch and iterate from there.

opengithub.com/nesquena/hermes-webui/issues/2697 →

Issue

enhancementhelp wantedux

Summary

Please add per-session reasoning effort support to the WebUI, so it's possible to set reasoning for one conversation without changing the global/default setting for other sessions.

Problem

Right now, reasoning effort appears to be treated as a shared/global setting in the WebUI flow.

Desired behavior

Changing reasoning effort in one session should only affect that session.
New sessions should continue using the configured default unless explicitly changed.

Notes

This should mirror the session-scoped behavior available in Hermes Agent, where reasoning effort can be set per session while still falling back to a global default.

Assessmentadvisory

feature●● medium85% confidence

Requires adding session-scoped override UI controls and backend state management while preserving global defaults.

Likely files

static/session-controls.js
api/sessions.py
api/agent.py
api/session_config.py
tests/test_sessions.py

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