me-web? 0.3.1: sharing offered when the check ends; an Android icon that fits

- The offer to share the findings appeared only after the "test from outside?" question was
  answered, so scrolling past it meant no offer at all. It now appears as soon as the check
  ends (hidden only while the outside test runs), and a payload built later still carries
  the outside test's result.
- Android gets an adaptive launcher icon: the drawing as a vector inside the 66-unit safe
  zone over the background colour, plus a monochrome layer for themed icons. The splash
  screen uses the same vector, so it is neither cut by the circle nor blurred from a
  192-pixel picture. The PNG stays for Android 7.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012CzABvBkbcFqoHdmi8b9WB

CLAUDE.md

@@ -111,6 +111,11 @@ The Android release key: alias `meweb`, certificate SHA-256
   properties; one nested property function left it unevaluated (`XA0003`).
 - **A headless Avalonia session does not end on its own** while the pulse animation runs: the screenshot tool calls
   `Environment.Exit(0)` after dispatching.
+- **Launchers and the Android 12 splash crop the icon to their own shape.** The launcher icon is the adaptive
+  `mipmap-anydpi-v26/icon.xml` (background colour, `drawable/icon_foreground.xml`, `drawable/icon_monochrome.xml` for
+  themed icons), and the splash uses the same foreground. Both vectors hold `branding/meweb.svg`'s drawing scaled into
+  the central 66 of 108 units around its smallest enclosing circle; a change to the drawing goes into all three files.
+  The plain `mipmap-xxxhdpi/icon.png` is only for Android 7.x.
 - **The macOS apphost is ad-hoc signed by the .NET 10 SDK even on Linux** (`LC_CODE_SIGNATURE` present); Apple
   Silicon refuses unsigned arm64 code, so never strip it.
 - **The Windows single-file publish drops native `.pdb` files beside the exe**; only `meweb.exe` ships.