v1.4.0

Minor Changes

• Add Claude Opus 4.8 support across fast mode, the Pi model catalog, documentation, and cache-usage price estimates.
• Improve /claude-cache hybrid anchor placement for long tool-heavy sessions by moving the rolling anchor to the latest user/tool-result boundary and adding a bridge anchor when Anthropic's 20-block cache lookback would otherwise miss the prior tail anchor.
• Add Anthropic's <use_parallel_tool_calls> system prompt guidance for OpenCode Anthropic chat sessions only, encouraging independent read-only tool calls to be issued in parallel without modifying non-Anthropic model prompts.

Patch Changes

• Renew main and fallback OAuth refresh file locks while a refresh is in flight, preventing another OpenCode process from reusing a rotating refresh token if Anthropic's OAuth endpoint is slow to respond.
• Sign only the controlled billing-header CCH placeholder so historical cch=...; text in prior messages cannot receive the per-request signature and break prompt-cache stability.
• Update development and integration dependencies, including OpenCode/Pi SDK packages, Biome, Miniflare, and release workflow pins.