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

index.ts

@@ -8,7 +8,7 @@ import { Conversation } from "./src/conversation";
 import Renderer from "./src/render";
 
 const { values: args, positionals } = parseArgs({
-  args: process.argv,
+  args: process.argv.slice(2),
   options: {
     model: { type: "string" },
     m: { type: "string" },
@@ -62,7 +62,7 @@ async function main() {
     if (modelFlag) convo.model = modelFlag;
   }
 
-  const prompt = positionals.slice(2).join(" ") || "Introduce yourself.";
+  const prompt = positionals.join(" ") || "Introduce yourself.";
   convo.messages.push({ role: "user", content: prompt });
 
   const { fullStream, text, totalUsage } = streamText({