Initial scaffold: Marti poetry workbench

Static-analysis-first poetry editor based on Borges architecture.
Three-column layout (sidebar | editor | analysis), AI opt-in and off by default.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

tsconfig.node.json

@@ -0,0 +1,5 @@
+{
+  "extends": "@electron-toolkit/tsconfig/tsconfig.node.json",
+  "include": ["electron.vite.config.*", "src/main/**/*", "src/preload/**/*"],
+  "compilerOptions": { "composite": true, "types": ["electron-vite/node"] }
+}