PromptLedger v0.3 — Labels, Status, and Better Diffs

Devlog — Part 3 Turning prompt history into a practical review workflow. In Part 1, I introduced PromptLedger as a deliberately small, local-first tool for treating prompts like code. In Part 2, I added release semantics: labels, label history, and status views that made it easier to answer questions like what is in production right now? With v0.3, the next question became harder: Even if I can diff two prompt versions, can I review them in a way that feels closer to a real release workflow? That is the focus of this release. PromptLedger v0.3 adds a small but practical Prompt Review layer on top of the existing history model — while still staying local-first, SQLite-backed, and intentionally limited in scope. Why a third part? After the release semantics work in v0.2, the project could already answer questions like: Which prompt does prod currently point to? When was that label changed? How does prod differ from staging? But another gap became obvious. A raw diff is useful, but in pra