chore: scaffold SPFx solution with ui-kit

Clean SPFx 1.22 (heft) web part template with @tnsu/ui-kit wired in.
Starting point for merging the stroy-bot-* repositories.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,11 @@
+node_modules/
+lib/
+dist/
+temp/
+*.sppkg
+.heft/
+sharepoint/solution/
+lib-commonjs/
+release/
+jest-output/
+.claude/settings.local.json