Centre the NOW tag; the type badge was already fine

Re-measuring the badges properly changed the answer. The earlier reading
that said the type badge sat 0.52px high was measuring the wrong glyphs: it
fed the canvas the element's raw text ("Song", "Media") while the page
renders text-transform: uppercase ("SONG", "MEDIA"), and a lowercase 'd' or
'g' has an ascender and a descender the capitals never draw.

Measured against the text as actually rendered, the type badge is within
0.10px of centred and wants nothing. The NOW tag was the one off, by 0.59px,
the same way the section chips were. So: the badge padding added in the last
commit is reverted, and the NOW tag gets the correction instead.

That line now reads, in px off centre: NOW 0.01, type badge 0.10, key badge
0.16, section chip -0.01.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

modules/pco-plan/style.css

@@ -206,7 +206,9 @@
 
 [data-module="pco-plan"] .pp-now-tag {
   display: none;
-  padding: 0.05em 0.45em;
+  /* Optically centred like the section chips: uppercase has no descenders,
+     so the capitals sat 0.59px low in the pill. */
+  padding: 0.018em 0.45em 0.082em;
   border-radius: 999px;
   background: var(--pp-current);
   color: var(--bg);