OpenCode does not recognize 'model: inherit' as a valid model identifier —
it throws ProviderModelNotFoundError when spawning any GSD subagent.
Changes:
- Remove 'model: inherit' injection for OpenCode agents in install.js
- Strip 'model:' field entirely during OpenCode frontmatter conversion
(OpenCode uses its configured default model when no model is specified)
- Update tests to verify model: inherit is NOT added
This fixes all 15 GSD agent definitions and the gsd-set-profile command
for OpenCode users.
Fixes#1156
0f112abf55