## Summary
- Update language model constants with latest model configurations and
pricing
- Add support for new model versions across multiple providers
- Improve model descriptions and configuration parameters

## Test plan
- Verify that the application loads with all model configurations
- Test model selection in the UI
- Confirm no TypeScript or lint errors

🤖 Generated with [Claude Code](https://claude.com/claude-code)
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<!-- CURSOR_SUMMARY -->
---

> [!NOTE]
> **Low Risk**
> Primarily updates configuration/constants for model selection; main
behavioral change is the expanded free-model name matching which could
alter which OpenRouter models are used in fallback.
> 
> **Overview**
> Adds the new Anthropic model `claude-opus-4-6` (with updated token
limits/pricing metadata) to the selectable model options.
> 
> Refreshes OpenRouter model options by introducing a generic
`openrouter/free` entry, adding `z-ai/glm-5`, tweaking `glm-4.7`
description, and removing older explicit free-model entries and
`moonshotai/kimi-k2-0905`. Updates `FREE_OPENROUTER_MODEL_NAMES` to
treat both `:free` and `/free` model names as free, which changes which
models can be selected in the auto free fallback.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
d192033357d87355a9d414269a19a348c3faef6d. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Updated language model constants with the latest configs and pricing to
keep model selection current. Adds new models and improves free model
detection for OpenRouter.

- **New Features**
  - Added Claude Opus 4.6 (1M context, 32k max output).
- Added OpenRouter “free” model and Z‑AI GLM 5; updated GLM 4.7
description.
- Updated context windows, temperatures, and pricing; removed deprecated
free entries and Kimi K2 0905.

- **Bug Fixes**
- Free model detection now supports names ending with “/free” (not just
“:free”).

<sup>Written for commit d192033357d87355a9d414269a19a348c3faef6d.
Summary will update on new commits.</sup>

<!-- End of auto-generated description by cubic. -->