Create documentation for model choice options

[neubig]

We have two new model choice options in OpenHands/software-agent-sdk and OpenHands/agent-canvas:

1. the /model command that allows for switch models manually
2. the model selection tool that allows the agent to dynamically switch between models

We should create documents, placed in the appropriate place, that document this functionality. Both should have instructions accompanied by screenshots within the agent canvas.

For the both examples, it would be good to show with three profiles: claude-opus-4-7 (a more expensive model that excels at frontend design), gpt-5.5 (a model that excels at instruction following), and minimax-m2.7 (a much less costly model that can be used as a daily driver).

The /model command can demonstrate the user using the gpt-5.5 for planning, and then having the user switch to minimax for the actual implementation.

The model selection tool can demonstrate the following prompt:
"Implement a simple web page on the features of OpenHands with Claude Opus 4.7, and then switch to GPT-5.5 and review the code."

[openhands-ai]

I'm on it! neubig can track my progress at all-hands.dev

[openhands-ai]

Since my last summary, there have been no additional changes.

Checklist:

• ✅ Issue Create documentation for model choice options #507 was addressed with documentation for both model choice options:
  • /model manual switching
  • Agent-driven model selection via SwitchLLMTool / switch_llm
• ✅ The requested example profiles were used:
  • claude-opus-4-7
  • gpt-5.5
  • minimax-m2.7
• ✅ Both requested workflows were documented with Agent Canvas screenshots.
• ✅ The new docs were added to navigation and linked from the existing LLM settings page.
• ✅ Changes were committed, pushed to an openhands/ branch, and PR docs: add model choice guides #508 was opened.
• ✅ PR checks passed.
• ✅ Changes are concise and limited to the requested documentation, navigation, and screenshot assets; no extraneous changes remain.

PR: #508

[neubig]

@OpenHands Is this available in the sidebar? If not, add it to the appropriate place in the sidebar, close to language model configuration.

[openhands-ai]

I'm on it! neubig can track my progress at all-hands.dev

[openhands-ai]

Since my last summary:

• ✅ Added a dedicated Model Choice subgroup in the sidebar immediately after Language Model (LLM) Settings.
• ✅ Confirmed the new model choice docs are surfaced there:
  • /model Command
  • Model Selection Tool
• ✅ Validated docs.json parses correctly and asserted the sidebar placement programmatically.
• ✅ Committed and pushed the update to the existing openhands/model-choice-docs branch.
• ✅ Updated PR docs: add model choice guides #508’s description to explicitly mention the sidebar placement.
• ✅ Did not create a duplicate PR; continued updating the existing open PR for issue Create documentation for model choice options #507.

Conciseness:

• The only new code/content change since the last summary is the focused docs.json navigation grouping.
• No extraneous changes were introduced.

PR: #508