Remove claude.ai/code skip

The extension needs to work on claude.ai/code like every other site;
the user toggles it off manually when needed. Dropping the host-level
skip leaves the word-boundary mapping fix as the only behavior change
on this branch.

https://claude.ai/code/session_01Y2YprLMx348eWD5C9Z4zpV

src/content/injector.js

@@ -15,17 +15,6 @@
   if (window.__silentSendInjected) return;
   window.__silentSendInjected = true;
 
-  // Skip Claude Code (web) entirely. Its tool-call traffic shares the HTTP
-  // surface with user messages; any selective walker becomes brittle the
-  // moment Anthropic changes a field name. Leaving the app untouched is the
-  // robust choice — the user handles redaction manually here.
-  if (
-    location.hostname === 'claude.ai' &&
-    /^\/code(\/|$)/.test(location.pathname)
-  ) {
-    return;
-  }
-
   // Merge active profiles into flat identity object
   function mergeProfiles(data) {
     const profiles = data?.profiles || [];