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

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//! Kilo detection: kilo.db tables/key columns and

//! session.version registry. No official environment override, A11.

//!

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

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

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

//!   verify and implement separately; compatibility with old message layout is unestablished.

//! - Empty session table: Pending, detect again next run.

//! - File marker uses greatest numeric session.version; registered means KnownVersion.

//!   Missing/unregistered versions use marked LatestFallback; scanners retain each message's session version.

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

// Distinguish new-core layout from unrelated databases; reject both unverified shapes.

// File marker is greatest numeric session.version; no sessions means Pending.