Create the app icon and finalize versioning

App identity for both editions: the three-lane glyph
(rectangle.split.3x1.fill) over a gentle gradient - teal for base
Lanework, dark graphite for Lanework Pro - rendered as 1024 masters and
packaged down the full macOS ladder into each target's own iconset,
replacing the borrowed pathfinder icon.

The About window arrives via IndieAbout (0.2.x): icon, copyright,
version/build/date read from the Info.plist that update_build_info.sh
already stamps on every build (CFBundleVersion 160 = git commit count,
BuildDate, BuildHash - verified in the built product), the version line
opening the bundled CHANGELOG.md, and the new ISC LICENSE.md one
document link away. Both files are authored to the Apple
inline-Markdown subset (no # headings, single-line paragraphs) and
bundle into both editions.

CHANGELOG.md replaces its placeholder with the real 2.0 first-release
notes - one sentence per user-facing feature.

The About box is also an edition seam: base's EditionAbout carries the
one-line Pro signpost 12-editions.md allots ("Lanework Pro adds
git-backed board history and sync."), and the Pro target compiles its
own signpost-less twin instead of that file - the no-#if file-level
doctrine applied to a string. README gains the identity bullet.

1649 green on both schemes; verify-editions.sh 26/26.

Claude-Session: https://claude.ai/code/session_01SR4XGjmBE16ZUYWpfFHXwY

LICENSE.md

@@ -0,0 +1,7 @@
+**ISC License**
+
+Copyright (c) 2026 Lanework Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.