Add Google Models To Opencode

Fetch Latest Reference Configuration:

• Read the latest configuration from GitHub.
• Extract the JSON configuration block from the content. This is the source of truth for model definitions.

Identify Models to Add/Update:

• Use the models defined in the fetched JSON under provider.google.models.
• Each model lives under provider.google.models.<model-id>.
• Common fields per model: id, name, reasoning, release_date, limit (context, output), cost (input, output, cache_read), modalities, and variants (thinking-level presets).

Merge Strategy:

• If provider.google does not exist, create it with "npm": "@ai-sdk/google" and an empty models object first.
• Merge the model definitions from the fetched JSON configuration.
• IMPORTANT: Skip the release_date field for all models during the merge.
• For each model:
  • If the model key already exists, merge the new definition (excluding release_date).
  • If the model key does not exist, add it.
• Do not remove existing models.

Write Back:

• Write the updated JSON back to ~/.config/opencode/opencode.json, pretty-printed with 2-space indent.
• Validate the JSON is syntactically correct before writing.

Verify:

• Re-read the file and confirm the new models appear under provider.google.models.
• Report which models were added or updated.