Initial scaffold from M1 spike (tiletopia)

Tauri 2 + Svelte 5 + xterm.js + portable-pty. Single full-window
WSL terminal pane with clickable distro picker. M1 verified manually
on Windows: window opens, xterm.js renders, claude TUI works,
resize reflows cleanly.

Graduated from ~/claude/ideas/wsl-mux/ per the approved plan at
~/.claude/plans/imperative-coalescing-feigenbaum.md. See memory.md
for decisions, open TODOs, and the M2-M5 roadmap.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,19 @@
+# Node
+node_modules/
+dist/
+.svelte-kit/
+.pnpm-store/
+
+# Rust / Tauri
+src-tauri/target/
+
+# Editor / OS
+.DS_Store
+.vscode/
+.idea/
+*.swp
+
+# Env / secrets
+.env
+.env.*
+!.env.example