A configuration plan for reducing AI token usage in OpenCode through three complementary strategies: model routing, the Hashline edit plugin, and the DCP context pruning plugin.
Environment: Google Vertex with Anthropic models (Opus 4.6, Sonnet 4.6/5/4.5, Haiku 4.5) and Gemini 3.6
Config scope: Global (~/.config/opencode/opencode.jsonc)