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.

v0.1.8

[0.1.8] - 2026-05-14

Auto-detect and ROI improvements

• Fixed dialog sizing on Windows: replaced hardcoded geometry() calls with minsize() across the ROI dialog, scale dialog, auto-detect window, and mark popup so windows open at the correct size without overriding the window manager's placement.
• center_window_on_screen now uses the window's actual size rather than a hardcoded override, fixing off-center placement on Windows.

Model/checkpoint compatibility

• No checkpoint format or project schema bump in this release; existing managed and local SAM2 model selections remain compatible.

Platform/backend limitations

• Visual sizing and centering fixes are Windows-specific; no behavioral changes on macOS.

.sdproj/migration notes

• No .sdproj schema version bump is required; existing projects remain loadable.

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.

v0.1.7

[0.1.7] - 2026-05-14

Auto-detect and ROI improvements

• Overhauled the auto-detect window with a dual-pane overview/detail timeline, interactive ROI selection, grid opacity control, and per-cell border rendering for clearer event visualization.
• Added incremental algorithm rerun scheduling so parameter changes (scale, opacity, ROI) trigger a debounced re-evaluation without blocking the UI.
• Active-cell overlay and cell-border rendering are now cached by pipeline generation, avoiding redundant recomputation across frame scrubs.
• Exporter now selects ROI-scoped speed metrics when an ROI is defined, falling back to full-frame metrics otherwise.

Performance

• Added DownsampledFrameSource (sdapp/shared/frame_source/downsampled.py) and compute_visualization_stats_for_preview to compute visualization stats at 0.25× resolution during the analysis-launch preview, then upsample the baseline back to full resolution — significantly reducing preview wait time on large stacks.
• Added sdapp/shared/diagnostics/ with OpenPerfTrace: a lightweight wall-clock stage/mark tracer for the analysis-window open path. Traces are dumped to the app log on completion and silently discarded on failure.
• Analysis launch flow now wraps the full open sequence in a perf trace, attributing time to import, preview preparation, frame rendering, and options-dialog interactions.

Model/checkpoint compatibility

• No checkpoint format or project schema bump in this release; existing managed and local SAM2 model selections remain compatible.

Platform/backend limitations

• No platform-specific regressions are known from the automated suite.
• DC trace controller and host window controller received minor fixes to align with the updated auto-detect and analysis launch flows.

.sdproj/migration notes

• No .sdproj schema version bump is required; existing projects remain loadable.
• _save_project_after_metrics_apply now persists project state immediately after metrics are applied from the host window, reducing the chance of unsaved metric changes.

Known segmentation caveats/regressions

• No new release-blocking segmentation regressions are known from the automated suite (708 tests pass).
• 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.