graph TD START[Start: VocalBuilder SubAgent] --> INPUT[Receive Input: script-text] INPUT --> VALIDATE[Validate Script Length 100-300 words] VALIDATE --> SKILL170[Skill #170: Convert to Voice-Over] SKILL170 --> GENERATE[Generate MP3 File] GENERATE --> CHECK[Verify MP3 Generation] CHECK --> |Success| OUTPUT[Return voiceover-mp3 URL] CHECK --> |Failure| RETRY[Retry Conversion] RETRY --> SKILL170 OUTPUT --> END[End: VocalBuilder Complete]