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Saw (2/?): reg-rs, avoid-compaction, and agentrail-rs Sharpen the Saw Sunday, Part 2. Three Rust CLI tools getting foundational upgrades to reduce developer workflow friction. reg-rs switches from binary SQLite databases to git-friendly text files. avoid-compaction structures multi-session AI agent workflows with explicit handoffs. agentrail-rs records successful agent trajectories and injects them as context, so agents learn from examples instead of repeating mistakes. Blog post: https://software-wrighter-lab.github.io/2026/03/15/saw-reg-rs-avoid-compaction-agentrail/ Chapters: 0:00 Title 0:05 Hook 0:25 Overview 0:46 reg-rs: Binary to Text 1:11 reg-rs Demo 1:51 avoid-compaction: Context Loss 2:12 avoid-compaction Flow 2:29 agentrail-rs: Just In Time Learning 2:51 agentrail-rs Architecture 3:16 Conclusions 3:37 CTA 3:50 Subscribe Reminder 4:02 Outro Links: - reg-rs: https://github.com/sw-cli-tools/reg-rs - avoid-compaction: https://github.com/softwarewrighter/avoid-compaction - agentrail-rs: https://github.com/sw-vibe-coding/agentrail-rs - Blog: https://software-wrighter-lab.github.io/2026/03/15/saw-reg-rs-avoid-compaction-agentrail/ ICRL Papers Referenced: - Decision Transformer (Chen et al., 2021): https://arxiv.org/abs/2106.01345 - Transformers Learn TD Methods (Wang et al., ICLR 2025): https://arxiv.org/abs/2405.13861 - OmniRL (2025): https://arxiv.org/abs/2502.02869 - Reflexion (Shinn et al., NeurIPS 2023): https://arxiv.org/abs/2303.11366 - Voyager (Wang et al., 2023): https://arxiv.org/abs/2305.16291 Hashtags: #rust #rustlang #cli #regressiontesting #aiagents #developer #programming #opensource #tdd #devtools