v0.1.19 - Throughput overview & responsive header

- Throughput: new "Throughput Overview" header with Gauge icon and brand-green
  badge icons on each card (Today, This week, 4-week average, Horse Mix, Grain Mix)
- Throughput: inline rolling-range selector (7d / 4w / 6w / 12w, default 4 weeks)
  driving the customer-mix cards; stats window widened to 12 weeks so switching
  range is a pure client-side re-filter
- Throughput: cards collapse to a single even 5-across row on laptop and up,
  with container-query value text that scales to each card's width
- Throughput: date logic pinned to Australian Eastern time (fixes the day-early
  date); This week subtitle shows the Mon-Sun date range
- Throughput: subtler tinted add-form; removed the inline-entry kicker and the
  "Open full form" link
- Topbar: fix cramped laptop header - action toggles no longer wrap above the
  user button; search drops to its own row earlier

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

backend/app/services/mix_calculator_pdf.py

@@ -319,7 +319,10 @@ def build_mix_calculator_pdf(session_record: MixCalculatorSession | dict) -> byt
             fit_text(line.raw_material_name, "Helvetica-Bold", table_font_size, content_width - 210),
         )
         pdf.setFont("Helvetica", table_font_size)
-        pdf.drawString(right_col_x, text_y, f"{_fmt_number(line.required_kg)}kg")
+        # Each ingredient carries its own rounding (set in the Ingredients Editor)
+        # so the printed sheet matches the on-screen calculated output.
+        line_decimals = getattr(line, "rounding_decimals", 2)
+        pdf.drawString(right_col_x, text_y, f"{_fmt_number(line.required_kg, line_decimals)}kg")
 
     strip_y = table_bottom - 6
     if note_lines: