Fix PDF decompression, add proper noun detection toggle, bump to 0.9.25

- document-scanner.js: Add missing await on _inflateSync() call — FlateDecode
  streams were not being decompressed because the async function was called
  without await, causing decompressed to hold a Promise instead of data
- content.js, storage.js, options.html, options.js: Gate proper noun / capital
  letter detection behind a new detectProperNouns setting (default off); was
  previously always-on causing noisy false-positive warnings on AI thinking
  output and common capitalized words
- Bump version 0.9.23 → 0.9.25

https://claude.ai/code/session_01ReZUeR1nrYzJeX7fTqwXMw

src/options/options.html

@@ -67,6 +67,16 @@
           <span class="toggle-slider"></span>
         </label>
       </div>
+      <div class="setting-row">
+        <div>
+          <label>Flag capitalized words as possible names/orgs</label>
+          <p class="setting-desc">Warn when capitalized words mid-sentence may be names, company names, or project names not in your configured identity (high false-positive rate)</p>
+        </div>
+        <label class="toggle">
+          <input type="checkbox" id="detectProperNouns">
+          <span class="toggle-slider"></span>
+        </label>
+      </div>
       <div class="setting-row">
         <div>
           <label>Auto-redact detected PII on send</label>