feat: scope pathway filters to Patient Pathways view with design-spec CSS (Task 10.9)

dash_app/assets/nhs.css

@@ -228,26 +228,18 @@ body {
     font-size: 13px; color: var(--nhs-mid-grey); margin-top: 4px;
 }
 
-/* ── Filter Bar ── */
-.filter-bar {
+/* ── Patient Pathways Filter Strip ── */
+.pathway-filters {
     background: var(--nhs-white);
     border: 1px solid var(--nhs-pale-grey);
-    padding: 12px 20px;
-    display: flex; align-items: center; gap: 16px;
-    flex-wrap: wrap;
+    border-bottom: 2px solid var(--nhs-blue);
+    padding: 8px 20px;
+    display: flex; align-items: center;
+    justify-content: space-between;
 }
-.filter-bar__group {
+.pathway-filters__buttons {
     display: flex; align-items: center; gap: 8px;
 }
-.filter-bar__divider {
-    width: 1px; height: 28px; background: var(--nhs-pale-grey);
-}
-.filter-bar__label {
-    font-size: 12px; font-weight: 600;
-    text-transform: uppercase; letter-spacing: 0.04em;
-    color: var(--nhs-mid-grey);
-    white-space: nowrap;
-}
 
 /* Toggle pills */
 .toggle-pills {

dash_app/components/filter_bar.py

@@ -1,20 +1,19 @@
-"""Filter bar component — drug, trust, and directorate filter buttons.
+"""Patient Pathways filter strip — drug, trust, and directorate filter buttons.
 
-View-specific controls for Patient Pathways. Global controls (chart type
-toggle, date filters) live in sub_header.py.
+View-specific controls for Patient Pathways only. Hidden when on Trust Comparison.
+Global controls (chart type toggle, date filters) live in sub_header.py.
 """
 from dash import html
 
 
 def make_filter_bar():
-    """Return a filter bar with drug, trust, and directorate filter buttons."""
-    return html.Section(
-        className="filter-bar",
-        **{"aria-label": "Filters"},
+    """Return a pathway filter strip with drug, trust, and directorate buttons."""
+    return html.Div(
+        className="pathway-filters",
+        id="pathway-filters",
         children=[
-            # Filter trigger buttons
             html.Div(
-                className="filter-bar__group",
+                className="pathway-filters__buttons",
                 children=[
                     html.Button(
                         children=[
@@ -54,7 +53,6 @@ def make_filter_bar():
                     ),
                 ],
             ),
-            # Clear all filters
             html.Button(
                 "Clear All",
                 id="clear-all-filters",