[FuTseYi]

What changed

• Present PulseBand as the product/brand while preserving the current GitHub repository name and firmware project.
• Repair obsolete English README links, Keil project path, Android APK path and bilingual GitHub links.
• Add repository structure guide and .gitignore for Keil generated/session files (previously tracked artifacts are not retroactively deleted).
• Replace unsubstantiated stable badge and accuracy/battery-life claims with honest prototype and verification wording.
• Add a Python stdlib relative-path checker for the real Keil Template.uvprojx file and a PR CI workflow to execute it.

Verification and guardrails

• Python relative-path checker is not a firmware compile or hardware test.
• No Keil source code, firmware paths, PCB binaries or app APK have been changed/moved.
• Firmware still needs native Keil build and on-device measurement before making performance claims.
• Formal GitHub repository renaming and About/Topics are unavailable through the active connector.