0.11.0: undo, Python scripts, experiments that open again, provenance, live installs, tables, hot reload

[s4mstruthers]

What's new

• Undo and redo on the canvas. ⌘Z takes an analysis back to before the last change (a box added or removed, a connection, a move, a setting, a group), ⇧⌘Z brings it again, and the right-click menu names what each would undo. The boxes run again, with the cache serving the ones that did not change. (flow/history.py)
• Export as Python script (under ⋯): a .py with the same boxes, settings and connections, which python analysis.py runs on its own, printing what each box gives and writing the results beside it. The folder's own boxes come along from boxes/. The experiment zip carries the same script as run.py. (flow/script.py)
• An exported experiment opens again. Drop the zip on OpenProcess (or File ▸ Open it): it is unpacked into a folder of its own, the app works in that folder, and the analysis runs and is checked against its record. A folder's own boxes are found by function name when their id (a hash of the old path) no longer matches, so moved or copied folders keep working too. (record.import_experiment)
• Every result knows where it came from. A figure saved as SVG carries the analysis, the box, its settings and the result's fingerprint in its metadata; a table saved as CSV (and a figure as PNG) gets a .provenance.json beside it. (flow/provenance.py)
• Installing shows pip's own lines as they come, on the tool's card, with the command it runs.
• Result tables sort and copy. Click a column heading to sort (numbers as numbers), ⌘C copies the selected rows, and Copy as CSV and Save as CSV… sit under the table.
• Your own boxes reload when you save them. A file under boxes/ saved in an editor is loaded again by itself (the files are watched, not only the folder), the message names the file, and the boxes it defines run again.
• The downloaded app checks itself for installs. The build's self-test runs pip inside the app and imports the whole standard library, so a release in which Install… or an installed package would fail is never published.

Verification

• Full suite offscreen: 422 passed, 3 skipped. New tests cover each feature, including a generated script executed end to end and an export → import round trip that reproduces the recorded numbers.
• The offscreen review drive (18 steps across every page) ran with no exceptions and no Qt warnings.
• The self-test passes from source; its pip step only runs in a packaged build, so this PR's Build apps run is where it is first exercised.

🤖 Generated with Claude Code