chore: release v0.1.2 — wink tuning entry

Documents the wink-probability tune-down (f661eab) as a proper
patch release. No code behaviour change in this commit — purely
version metadata, changelog, and user-facing about-page history.

CHANGES
- buddy.php: Version header + BUDDY_VERSION constant 0.1.1 → 0.1.2
- CHANGELOG.md: new [0.1.2] entry above [0.1.1], explains the
  tuning rationale + what's intentionally unchanged (wink visuals,
  trigger threshold mood >= 75)
- inc/about.php: version-history card leads with v0.1.2 (latest
  badge), v0.1.1 demoted to second slot

Why a patch release: the wink fires far less often now than it
did in v0.1.1. From a user's point of view that IS a behaviour
change worth a version. Following SemVer: PATCH bump because the
public API and feature set are unchanged; only the tuning of an
existing behaviour was adjusted.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

inc/about.php

@@ -98,7 +98,11 @@ function buddy_render_about_page() {
             <h2><?php esc_html_e( 'Version history', 'buddy' ); ?></h2>
             <ul>
                 <li>
-                    <span class="ver">v0.1.1</span> &mdash; 25 May 2026 <span class="latest">latest</span><br>
+                    <span class="ver">v0.1.2</span> &mdash; 26 May 2026 <span class="latest">latest</span><br>
+                    <?php esc_html_e( 'Wink, tuned. The Easter-egg wink from v0.1.1 was firing at 30% per render — felt closer to "stuck" than "playful". Dropped to 5%: same cheeky face when it lands, just rare enough to feel like a treat.', 'buddy' ); ?>
+                </li>
+                <li>
+                    <span class="ver">v0.1.1</span> &mdash; 25 May 2026<br>
                     <?php esc_html_e( 'Cheeky face! New wink expression that occasionally appears when Buddy is in a good mood — one eye closed, asymmetric smirk, rosier cheeks. Pure SVG, no image files. Proof that the expression engine is properly extensible.', 'buddy' ); ?>
                 </li>
                 <li>