fix(pi-ai): normalize bin path to avoid consumer lockfile churn (#6812)

The npm registry normalizes bin paths in packument metadata
("dist/cli.js") while the published tarball keeps the authored
"./dist/cli.js". npm consumers get perpetual one-line
package-lock.json flips depending on whether resolution used
registry metadata or the extracted package.

Drop the "./" prefix to match the registry-normalized form and the
sibling coding-agent package.

Fixes #6811

packages/ai/package.json

@@ -41,7 +41,7 @@
 		}
 	},
 	"bin": {
-		"pi-ai": "./dist/cli.js"
+		"pi-ai": "dist/cli.js"
 	},
 	"files": [
 		"dist",