Update dependency anomalyco/opencode to v1.17.18

[vinnyang]

This PR contains the following updates:

Package	Update	Change
anomalyco/opencode	patch	1.17.16 → 1.17.18

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Release Notes

anomalyco/opencode (anomalyco/opencode)

v1.17.18

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Core

Bugfixes

• Prevent crashes and bad pricing data when GitHub Copilot returns models with a zero billing batch size.

Improvements

• Add a model-specific system prompt for Meta Muse Spark.

v1.17.17

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Core

Bugfixes

• Improved Meta model handling for reasoning variants and provider requests.

Desktop

Bugfixes

• Fixed clipped descenders in model selector labels.

Improvements

• Added a dismissible tabs intro popup and refreshed the help entry point.
• Updated sub-agent task rows to match the v2 session design more closely.
• Restyled the revert dock in v2 sessions for clearer restore actions.
• Added a v2 free-model selector with faster access to more providers.

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