Memory

Sigil uses 8 Rust crates: core, tasks, orchestrator, memory, providers, gates, tools, cli. Per-project supervisors manage worker pools.

Claude Code workers should default to 30min timeout. Tasks exceeding 25 turns are likely stuck and should be checkpointed.

For queries under 5 words, FTS5 outperforms vector search. Hybrid mode uses RRF to merge both result sets.

Haiku for routing decisions, Sonnet for execution. Average per-task cost dropped from $0.35 to $0.18 after the switch.

Workers use git worktrees for isolation. Each worker gets a unique worktree under .worktrees/{worker_name}/