feat(tts): add --edit flag and fix CLI argument parsing

- Improved input trimming and console output formatting in `tts.ts`
- Updated codespan colors in the markdown renderer for better visual contrast
- Disabled `noPropertyAccessFromIndexSignature` in tsconfig.json

src/render/markdown.ts

@@ -144,7 +144,7 @@ class LmcRenderer extends Renderer {
   }
 
   override codespan({ text }: Tokens.Codespan) {
-    return chalk.bgRgb(192, 192, 192).black.bold(text);
+    return chalk.bgRgb(192, 192, 192).rgb(24, 24, 24).bold(text);
   }
 
   override link({ href, tokens }: Tokens.Link) {