Unify input font size and padding (text-sm, px-3 py-2.5)

Inputs rendered at different sizes: the SearchSelect was 54px tall with a 16px
font (the wrapper's p-2 and the inner box's forms-plugin padding stacked, and
the wrapper had no text-sm), and the string-criterion filter input had no
text-sm (16px) with p-2. Native inputs are 42px / 14px / px-3 py-2.5.

Align both to the native size:
- SearchSelect wrapper supplies px-3 py-2.5 + text-sm and the inner search box
  zeroes its own padding (p-0), so the field is one 42px row like an input.
- String filter input gets text-sm + px-3 py-2.5.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

common/components/search_select.py

@@ -73,8 +73,11 @@ LabeledOption = tuple[str, str]
 # via :has() — the same opacity-50 a disabled native input uses (see
 # _DISABLED_CONTROL in games/forms.py), so the two look identical. Callers only
 # toggle the control's `disabled`, never styles.
+# px-3 py-2.5 text-sm match a native input (INPUT_CLASS); the wrapper supplies
+# the field padding, and the inner search box zeroes its own (p-0) so the two
+# don't stack into a too-tall field.
 _CONTAINER_CLASS = (
-    "relative flex flex-wrap items-center gap-1 p-2 rounded-base "
+    "relative flex flex-wrap items-center gap-1 px-3 py-2.5 rounded-base text-sm "
     "bg-neutral-secondary-medium border border-default-medium "
     "focus-within:border-brand focus-within:ring-1 focus-within:ring-brand "
     f"{DISABLED_WITHIN_CLASS}"
@@ -84,7 +87,7 @@ _PILLS_CLASS = "contents"
 # the whole widget stays consistent (the wrapper handles the faded look via
 # has-[:disabled]:opacity-50).
 _SEARCH_CLASS = (
-    "flex-1 min-w-[8rem] border-0 bg-transparent text-sm text-heading "
+    "flex-1 min-w-[8rem] border-0 p-0 bg-transparent text-sm text-heading "
     "focus:ring-0 focus:outline-hidden placeholder:text-body "
     "disabled:cursor-not-allowed"
 )