Straw phase F: visible polish — RYD, HTML, intent filter, network sec

Four polish items, all visible:
1. Fixed RYD URL: was returnyoutubedislike.com (the website, 404s on /votes)
   → returnyoutubedislikeapi.com (the actual API).
2. Bundled Sectigo "Public Server Authentication CA DV R36" intermediate
   as an additional trust anchor (network_security_config.xml) for the
   .com web host — the API uses Google Trust Services already so this
   is defensive, in case we ever fetch the landing page.
3. Added intent-filter for YouTube URLs (VIEW + SEND) on StrawActivity.
   Single-task launchMode; pickYouTubeUrl() routes the initial Intent
   to Screen.VideoDetail(url) instead of Home.
4. stripHtml() utility removes <br>, </p>, and other tags from
   NewPipeExtractor's description. Chapter timestamps now render
   readably; raw HTML gone.

Also added Log.d to SponsorBlockClient and RydClient for visible
verification (StrawSb / StrawRyd tags). PlayerScreen now shows a
"SB: N segments" overlay chip in the top-left so the user can see
that SponsorBlock is armed.

Verified on Android 14 emulator with "Me at the zoo" intent:
- RYD: 👍 18.9M / 👎 424.2K renders
- Intent: direct URL → VideoDetail (no Home pass-through)
- HTML: chapter timestamps render clean

strawApp/src/main/AndroidManifest.xml

@@ -11,15 +11,33 @@
         android:roundIcon="@android:drawable/sym_def_app_icon"
         android:supportsRtl="true"
         android:usesCleartextTraffic="true"
+        android:networkSecurityConfig="@xml/network_security_config"
         android:theme="@android:style/Theme.Material.Light.NoActionBar">
         <activity
             android:name=".StrawActivity"
             android:exported="true"
+            android:launchMode="singleTask"
             android:configChanges="orientation|screenSize|keyboardHidden">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
+            <!-- Open YouTube URLs with Straw. -->
+            <intent-filter android:autoVerify="false">
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="https" />
+                <data android:host="www.youtube.com" />
+                <data android:host="m.youtube.com" />
+                <data android:host="youtube.com" />
+                <data android:host="youtu.be" />
+            </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.SEND" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <data android:mimeType="text/plain" />
+            </intent-filter>
         </activity>
     </application>
 </manifest>