DevSwitch - Localhost Overrides

Why Use DevSwitch
• Local-only: Rules are stored in chrome.storage.local. No login, no cloud sync.
• MV3-native: Uses declarative rules (no request interception / body inspection).
• Low overhead: Redirects and header modifications are handled by the browser’s declarative networking layer. 
• Dev-focused scope: Redirect + basic header overrides + fast enable/disable.

Features
• Regex / pattern redirection: map https://site.com/app.js → http://localhost:3000/app.js
• Header rules (basic): set / append / remove request or response headers (where supported by DNR)
• Global kill switch: instantly disable all rules
• Import / export: back up and share rule sets as JSON