* feat(zai): add Z.AI GLM Coding Plan provider preset
Add dedicated Z.AI provider support for the GLM Coding Plan, enabling
use of GLM-5.1, GLM-5-Turbo, GLM-4.7, and GLM-4.5-Air models through
the OpenAI-compatible shim with proper thinking mode (reasoning_content),
max_tokens handling, and context window sizing.
* fix(zai): unify GLM max output token limits across casing variants
glm-5/glm-4.7 had conservative 16K max output while GLM-5/GLM-4.7
had 131K. Use consistent Z.AI coding plan limits for all GLM variants.
* fix(zai): restore DashScope GLM limits, enable GLM thinking support
- Restore lowercase glm-5/glm-4.7 to 16_384 max output (DashScope limits)
while keeping Z.AI coding plan high limits on uppercase GLM-* keys only
- Add GLM model support to modelSupportsThinking() so reasoning_content
is enabled when using GLM-5.x/GLM-4.7 models on Z.AI
* fix(zai): tighten GLM regexes, fix misleading context window comment
- Use precise regex in thinking.ts: exact GLM model matches only,
no false positives on glm-50/glm-4, includes glm-4.5-air
- Use uppercase-only match in StartupScreen rawModel fallback so
DashScope lowercase glm-* models aren't mislabeled as Z.AI
- Clarify context window comment: lowercase glm-5.1/glm-5-turbo/
glm-4.5-air are Z.AI-specific aliases, not DashScope
* fix(zai): scope GLM detection to Z.AI
* improve readability of max_completion_tokens check
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
---------
Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>
a0d657ee18