Revert claude.ai/code to blanket skip

Drops the narrow field-based walker. Matching only known user-input
fields is brittle: the moment Anthropic renames prompt/input/messages
the walker silently stops substituting and real data leaks.

Preferring robustness over convenience here — the extension stays
dormant on claude.ai/code regardless of future API shape changes, and
users handle redaction manually on that one app. The word-boundary
mapping fix from the previous commit is unaffected.

https://claude.ai/code/session_01Y2YprLMx348eWD5C9Z4zpV

src/content/content.js

@@ -754,74 +754,6 @@
     return { modified, replacements: allReplacements };
   }
 
-  // ============================================================
-  // Claude Code (claude.ai/code) — narrow walker
-  //
-  // The web Claude Code app streams tool-call traffic (file paths, shell
-  // commands, GitHub URLs) through the same API as user messages. Deep-walking
-  // every string corrupts that traffic and makes tools fail. Instead we only
-  // substitute at paths that carry user-typed input:
-  //   - top-level `prompt` (classic claude.ai chat field)
-  //   - `attachments[].extracted_content` and `.file_name` (pasted content)
-  //   - `messages[].content` / content parts where role === 'user'
-  // Anything outside these paths — tool_use, tool_result, system, tools,
-  // metadata, IDs — passes through untouched.
-  // ============================================================
-  function isClaudeCode() {
-    return location.hostname === 'claude.ai' && /^\/code(\/|$)/.test(location.pathname);
-  }
-
-  function processBodyClaudeCode(body) {
-    let modified = false;
-    const allReplacements = [];
-
-    function processString(s) {
-      if (typeof s !== 'string' || s.length < MIN_STRING_LENGTH) return s;
-      const r = substituteAll(s);
-      if (r.modified) {
-        allReplacements.push(...r.replacements);
-        modified = true;
-        return r.text;
-      }
-      return s;
-    }
-
-    if (body && typeof body === 'object') {
-      if (typeof body.prompt === 'string') body.prompt = processString(body.prompt);
-      if (typeof body.input === 'string') body.input = processString(body.input);
-
-      if (Array.isArray(body.attachments)) {
-        for (const att of body.attachments) {
-          if (!att || typeof att !== 'object') continue;
-          if (typeof att.extracted_content === 'string') {
-            att.extracted_content = processString(att.extracted_content);
-          }
-          if (typeof att.file_name === 'string') {
-            att.file_name = processString(att.file_name);
-          }
-        }
-      }
-
-      if (Array.isArray(body.messages)) {
-        for (const msg of body.messages) {
-          if (!msg || msg.role !== 'user') continue;
-          if (typeof msg.content === 'string') {
-            msg.content = processString(msg.content);
-          } else if (Array.isArray(msg.content)) {
-            for (const part of msg.content) {
-              // Only text parts — never tool_use / tool_result / image payloads
-              if (part?.type === 'text' && typeof part.text === 'string') {
-                part.text = processString(part.text);
-              }
-            }
-          }
-        }
-      }
-    }
-
-    return { modified, replacements: allReplacements };
-  }
-
   // ============================================================
   // Check if we have anything to substitute
   // ============================================================
@@ -947,9 +879,7 @@
           try {
             // Try JSON
             const body = JSON.parse(options.body);
-            const { modified, replacements } = isClaudeCode()
-              ? processBodyClaudeCode(body)
-              : processBody(body);
+            const { modified, replacements } = processBody(body);
 
             if (modified) {
               options = { ...options, body: JSON.stringify(body) };
@@ -959,10 +889,8 @@
               );
             }
           } catch (e) {
-            // Not JSON — try raw string substitution (form data, etc.).
-            // Skip on claude.ai/code: raw bodies there are typically tool
-            // traffic, not user input.
-            if (options.body.length > MIN_STRING_LENGTH && !isClaudeCode()) {
+            // Not JSON — try raw string substitution (form data, etc.)
+            if (options.body.length > MIN_STRING_LENGTH) {
               const result = substituteAll(options.body);
               if (result.modified) {
                 options = { ...options, body: result.text };
@@ -1016,22 +944,17 @@
     ) {
       try {
         const parsed = JSON.parse(body);
-        const { modified, replacements } = isClaudeCode()
-          ? processBodyClaudeCode(parsed)
-          : processBody(parsed);
+        const { modified, replacements } = processBody(parsed);
         if (modified) {
           body = JSON.stringify(parsed);
           notifySubstitutions(replacements);
         }
       } catch (e) {
-        // Not JSON — raw string. Skip on claude.ai/code; raw bodies there
-        // are typically tool traffic, not user input.
-        if (!isClaudeCode()) {
-          const result = substituteAll(body);
-          if (result.modified) {
-            body = result.text;
-            notifySubstitutions(result.replacements);
-          }
+        // Not JSON — raw string
+        const result = substituteAll(body);
+        if (result.modified) {
+          body = result.text;
+          notifySubstitutions(result.replacements);
         }
       }
     }

src/content/early-hook.js

@@ -9,6 +9,19 @@
  * because sites like claude.ai have strict CSP that blocks inline scripts.
  */
 (function () {
+  // Claude Code (claude.ai/code) streams real file paths, shell commands, and
+  // tool-call traffic through the same HTTP surface as user messages. Any
+  // substitution there corrupts tool execution. We deliberately stay out of
+  // it entirely so the extension stays robust to API shape changes — the user
+  // handles redaction manually on this one app.
+  if (
+    location.hostname === 'claude.ai' &&
+    /^\/code(\/|$)/.test(location.pathname)
+  ) {
+    window.__ssSkipHost = true;
+    return;
+  }
+
   window.__ssOriginalFetch = window.fetch;
   window.__ssOriginalXHROpen = XMLHttpRequest.prototype.open;
   window.__ssOriginalXHRSend = XMLHttpRequest.prototype.send;

src/content/injector.js

@@ -15,6 +15,17 @@
   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 || [];