v0.9.0

Added

• Codebase browse mode — loupe browse [path] opens the whole tracked codebase (optionally scoped) in the review UI; read any file, leave inline questions, and Compile Review Prompt to feed an LLM for onboarding/learning.
• "What's new" modal — curated highlights pop on the first run of a new version; reopen from the top-bar sparkles button or n.
• Independent side-by-side scrolling — each pane has its own slim horizontal scrollbar (drag it, or Shift+scroll); the whole pane moves as one unit. Fixes long lines overlapping across panes.
• Word-wrap toggle — top-bar button + w toggles wrapping in both unified and side-by-side; off by default. Works in browse mode too.
• Comment either pane in side-by-side — unchanged lines are now commentable on the left (old) pane, not just the right.