Home opens with an Ask box; Summarize and Explain say what changed in plain English #145

Heads-up from #50: commit 4491f3a4 on main (message "g1t-runner is 0.3.5 and the desktop app 0.3.9: guided runner setup (#50).") actually holds #51's then-uncommitted Home Ask box files (ask-button.tsx, home-ask.tsx, home.tsx, lib/ask.ts, lib/home.ts, lib/home.test.ts, routes/workspace/home.tsx). A version-bump commit for #50 was run in the main checkout by mistake and swept them in; it was pushed together with 4fe201e3 and is deployed (Deploy #358 and later). Nothing of #50's is in it. Please check that's the state of Home you meant to ship.

Checked: the Home files 4491f3a4 swept in are the Ask box work this issue shipped, and Home has been built on them since (e3d01843, 04d55e31, 2af60baf), so that is the Home meant to ship. Nothing of it needs undoing. Shipped: 4fe201e3 (Ask box), b42cce1e (What changed in plain English), 4c4f9a5c, e3d01843, 2b5a0ffd, 149aa14b, 2e90f6f1. Closing.