BaseHalf 0.4.1 - Canvas and Agent Area Polish

This release tightens the VS Code-based BaseHalf line that started in 0.4.0.

Canvas and references: directed context-flow references, the React Flow live scene, native context menus, adaptive cards, badge toggle polish, snap guides, and steadier zoom/navigation coverage.
Markdown card detail: rich/source/preview projections stay on one working copy, with external-change merge, single-owner undo/redo, IME-safe autosave, rich clipboard, file-link autocomplete, and source fallback for passthrough blocks.
Agent Area: terminal commands and extension-created terminals route into BaseHalf's Agent Area, with stronger tabs, splits, and TUI session lifecycle behavior.
Files, Git, and Search: Explorer/Search opens stay in the canvas/card flow, while Git provider, branch checkout, refresh, and publish-branch paths are covered by smoke.
Release path: signed update feed, branded macOS DMG, release notes system page, expanded smoke coverage, and Electron unit coverage.

New Installs

Download the DMG, drag BaseHalf into Applications, then run this once before first launch:

xattr -dr com.apple.quarantine /Applications/BaseHalf.app

The app is not Apple-notarized yet. The update payload is protected by BaseHalf's signed update manifest and archive verification.