What does this PR do?

Removes session_title as a possible Honcho session ID.

Causes sessionStrategy to be honored correctly.

Related Issue

Fixes #24740

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 🔒 Security fix
• 📝 Documentation update
• ✅ Tests (adding or improving test coverage)
• ♻️ Refactor (no behavior change)
• 🎯 New skill (bundled or hub)

Changes Made

• remove session_title from honcho plugin session creation flow

How to Test

1. Enable Honcho
2. Set sessionStrategy to per-repo
3. Open two cli chats in the same directory
4. In each chat, talk about a different topics, so each session has a title generated
5. Check latest sessions in Honcho workspace
6. Confirm only one session was created in Honcho (not two)

Checklist

Code

• I've read the Contributing Guide
• My commit messages follow Conventional Commits (fix(scope):, feat(scope):, etc.)
• I searched for existing PRs to make sure this isn't a duplicate
• My PR contains only changes related to this fix/feature (no unrelated commits)
• I've run pytest tests/ -q and all tests pass
• I've added tests for my changes (required for bug fixes, strongly encouraged for features)
• I've tested on my platform: Debian 13

Documentation & Housekeeping

• I've updated relevant documentation (README, docs/, docstrings) — or N/A
• [N/A] I've updated cli-config.yaml.example if I added/changed config keys — or N/A
• [N/A] I've updated CONTRIBUTING.md or AGENTS.md if I changed architecture or workflows — or N/A
• I've considered cross-platform impact (Windows, macOS) per the compatibility guide — or N/A
• [N/A] I've updated tool descriptions/schemas if I changed tool behavior — or N/A