desktop/src-tauri/crates/core/src/adapters/opencode/detect.rs

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//! OpenCode detection: opencode.db schema columns distinguish products;

//! select through the session.version registry.

//!

//! Rules: architecture.md#unknown-version / adapters.md A17.

//! - Missing part/session/message tables or key columns: unknown format, reject.

//!   Also reject new-core session_message databases without part;

//!   verify that format and implement separately; new core and old message layouts differ, A17.

//! - No usage parts: Pending, retry next run; empty sessions do not verify versions.

//! - Validate each step-finish against its session.version; retain mixed-version compatibility flags.

/// Detect opencode.db and select the registered implementation.

/// File-level basis covers actual usage parts; empty/highest-version sessions cannot verify other sessions.