fix: version badge v0.50.54→v0.50.55, add CHANGELOG entry for v0.50.55

The v0.50.55 release (Docker honcho fix) missed the index.html version
badge bump and CHANGELOG entry. Caught during post-session QA sweep.

CHANGELOG.md

@@ -1,5 +1,11 @@
 # Hermes Web UI -- Changelog
 
+## [v0.50.55] — 2026-04-15
+
+### Fixed
+- **Docker honcho extra** — `docker_init.bash` now installs `hermes-agent[honcho]` so `honcho-ai` is included in the venv on every fresh Docker build. Fixes `"Honcho session could not be initialized."` errors on rebuilt containers. (Fixes #553)
+- **Version badge** — `index.html` version badge corrected to v0.50.55 (was missing the bump for this release).
+
 ## [v0.50.54] — 2026-04-15
 
 ### Changed

static/index.html

@@ -553,7 +553,7 @@
                 <div class="settings-section-title">System</div>
                 <div class="settings-section-meta">Instance version and access controls.</div>
               </div>
-              <span class="settings-version-badge">v0.50.54</span>
+              <span class="settings-version-badge">v0.50.55</span>
             </div>
             <div class="settings-field" style="border-top:1px solid var(--border);padding-top:12px;margin-top:8px">
               <label for="settingsPassword" data-i18n="settings_label_password">Access Password</label>