Change from "Build" to "Version"

Also make version string copy-able

src/pages/settings.css

@@ -140,3 +140,10 @@
   color: var(--link-color);
   vertical-align: middle;
 }
+
+#settings-container .version-string {
+  padding: 4px;
+  font-family: var(--monospace-font);
+  font-size: 85%;
+  text-align: center;
+}

src/pages/settings.jsx

@@ -18,6 +18,7 @@ import {
   removeSubscription,
   updateSubscription,
 } from '../utils/push-notifications';
+import showToast from '../utils/show-toast';
 import states from '../utils/states';
 import store from '../utils/store';
 
@@ -508,21 +509,38 @@ function Settings({ onClose }) {
           </p>
           {__BUILD_TIME__ && (
             <p>
-              <span class="insignificant">Last build:</span>{' '}
-              <RelativeTime datetime={new Date(__BUILD_TIME__)} />{' '}
-              {__COMMIT_HASH__ && (
-                <>
+              Version:{' '}
+              <input
+                type="text"
+                class="version-string"
+                readOnly
+                size="18" // Manually calculated here
+                value={`${__BUILD_TIME__.slice(0, 10).replace(/-/g, '.')}${
+                  __COMMIT_HASH__ ? `.${__COMMIT_HASH__}` : ''
+                }`}
+                onClick={(e) => {
+                  e.target.select();
+                  // Copy to clipboard
+                  try {
+                    navigator.clipboard.writeText(e.target.value);
+                    showToast('Version string copied');
+                  } catch (e) {
+                    console.warn(e);
+                    showToast('Unable to copy version string');
+                  }
+                }}
+              />{' '}
+              <span class="ib insignificant">
                 (
                 <a
                   href={`https://github.com/cheeaun/phanpy/commit/${__COMMIT_HASH__}`}
                   target="_blank"
                   rel="noopener noreferrer"
                 >
-                    <code>{__COMMIT_HASH__}</code>
+                  <RelativeTime datetime={new Date(__BUILD_TIME__)} />
                 </a>
                 )
-                </>
-              )}
+              </span>
             </p>
           )}
         </section>