release v0.9.6: --auto no longer prompts for sudo password

sudo_runas_neg1 and sudoedit_editor's detect() bodies invoked
'sudo -ln' (intending list + non-interactive). Some sudoers / PAM
configurations have been observed prompting for a password anyway
when the flags are bundled. That meant skeletonkey --auto --i-know
could hang on a sudo password prompt during the corpus scan — bad
ergonomics for an LPE tool whose whole point is to get root without
already having it.

Fix: write '-n -l' as separate flags, redirect stdin from /dev/null
so sudo cannot fall back to reading the tty even if PAM tries to
coerce one. Belt-and-suspenders against any tty prompt during --auto.

docs/index.html

@@ -56,7 +56,7 @@
   <div class="container hero-inner">
     <div class="hero-eyebrow">
       <span class="dot dot-pulse"></span>
-      v0.9.5 — released 2026-05-28
+      v0.9.6 — released 2026-05-28
     </div>
     <h1 class="hero-title">
       <span class="display-wordmark">SKELETONKEY</span>
@@ -598,7 +598,7 @@ uid=0(root) gid=0(root)</pre>
       who found the bugs.
     </p>
     <p class="footer-meta">
-      v0.9.5 · MIT · <a href="https://github.com/KaraZajac/SKELETONKEY">github.com/KaraZajac/SKELETONKEY</a>
+      v0.9.6 · MIT · <a href="https://github.com/KaraZajac/SKELETONKEY">github.com/KaraZajac/SKELETONKEY</a>
     </p>
   </div>
 </footer>