v0.2.0

[0.2.0] - 2026-06-12

Host project persistence

• Added .sdproj container schema 3 with optional embedded source images (images_embedded.json plus images/) so projects can remain usable when the original stack folder moves.
• Embedded fallback loads now preserve the original recorded stack folder in stack.json; extracted temp directories are used only as live read sources and are not persisted as source folders.
• Saving with embedding enabled now fails clearly if no source image files can be embedded, instead of silently producing a project without its image payload.
• Saving a project from embedded fallback with embedding disabled is blocked until the user re-enables embedding or rebinds to a real source folder.
• Embedded extraction cleanup now runs after successful close saves or successful context replacement, and live extraction dirs are protected by an active marker.

Export metrics

• Added the intensity export metric, including per-frame mean ROI intensity, baseline intensity, relative delta_i_over_baseline_i, plots, summaries, and workbook output.

Model/checkpoint compatibility

• No checkpoint format or model selection change in this release; existing managed and local SAM2 model selections remain compatible.

Platform/backend limitations

• Embedding source images can substantially increase .sdproj size; save-time confirmation reports the source stack size before copying frames into the project.

.sdproj/migration notes

• Host .sdproj writers now emit schema 3. Schema 2 projects remain loadable.
• SDApp 0.1.9 may open schema 3 projects but does not understand embedded source images; if a 0.1.9 build re-saves such a project, the embedded image payload can be dropped. Use 0.2.0 or later for projects that rely on embedded source images.

Known segmentation caveats/regressions

• No new release-blocking segmentation regressions are known from the automated suite.
• SAM2 post-processing/native extension availability may still vary by environment.
• Auto-update behavior still depends on platform packaging/signing state; validate against final signed release artifacts.