feat(chart): split toolbar into indicators row + actions row

When showSma is true, the indicator chips (MA5/20/60 + RSI + MACD) and the
action buttons (수평선 / CSV / 전체화면, plus the fullscreen symbol label) were
sharing one flex-wrap row. On narrow widths the actions wrapped into the
middle of the indicators because `ml-auto` only enforces right-pull while
everything fits on one line — once wrap kicks in the right-side group loses
its anchor.

Split into two rows so wrap in either group stays local:
- Indicators row: rendered only when showSma. Hidden in 1D (intraday) where
  none of these are meaningful, matching prior behavior.
- Actions row: always rendered. Leading fullscreen label + `ml-auto` to push
  the three action buttons right; on narrow widths they wrap among themselves
  without colliding with indicator chips.

web/components/StockChart.tsx

@@ -929,11 +929,80 @@ export function StockChart({ chart, prediction, targets }: Props) {
 
   return (
     <div ref={wrapperRef} className={wrapperCls}>
+      {/*
+        툴바를 2 그룹으로 분리:
+          A) 보조지표 (MA5/20/60 + RSI + MACD) — 일봉 계열에서만 의미. 안 보이면 row 자체 생략.
+          B) 액션 (전체화면 종목 라벨 + 수평선 + CSV + 전체화면 토글) — 항상 표시.
+        같은 줄에 다 묶었을 때 모바일/좁은 폭에서 indicators 와 actions 가 섞여서 wrap 되며
+        "ml-auto" 가 줄바꿈 직전에서만 분리 효과를 주고 그 외엔 actions 가 indicators 사이로 끼어듦.
+        분리하면 indicators wrap 은 indicators 안에서만 일어남 — actions 그룹은 자체 정렬 유지.
+      */}
+      {showSma && (
+        <div className="mb-1 flex flex-wrap items-center gap-1.5 px-1">
+          {SMA_PRESETS.map((p) => {
+            const on = active.has(p.window);
+            return (
+              <button
+                key={p.window}
+                type="button"
+                onClick={() => toggle(p.window)}
+                className={`flex items-center gap-1 rounded-full border px-2 py-0.5 text-[10px] transition ${
+                  on
+                    ? "border-zinc-600 bg-zinc-800/80 text-zinc-100"
+                    : "border-zinc-800 bg-transparent text-zinc-500 hover:text-zinc-300"
+                }`}
+                aria-pressed={on}
+              >
+                <span
+                  className="inline-block h-2 w-2 rounded-full"
+                  style={{ backgroundColor: on ? p.color : "transparent", border: `1px solid ${p.color}` }}
+                />
+                {p.label}
+              </button>
+            );
+          })}
+          <span className="mx-1 text-zinc-700">|</span>
+          <button
+            type="button"
+            onClick={() => setRsiOn((v) => !v)}
+            className={`flex items-center gap-1 rounded-full border px-2 py-0.5 text-[10px] transition ${
+              rsiOn
+                ? "border-zinc-600 bg-zinc-800/80 text-zinc-100"
+                : "border-zinc-800 bg-transparent text-zinc-500 hover:text-zinc-300"
+            }`}
+            aria-pressed={rsiOn}
+            title="상대강도지수 (Relative Strength Index, 14일)"
+          >
+            <span
+              className="inline-block h-2 w-2 rounded-full"
+              style={{ backgroundColor: rsiOn ? "#e879f9" : "transparent", border: "1px solid #e879f9" }}
+            />
+            RSI
+          </button>
+          <button
+            type="button"
+            onClick={() => setMacdOn((v) => !v)}
+            className={`flex items-center gap-1 rounded-full border px-2 py-0.5 text-[10px] transition ${
+              macdOn
+                ? "border-zinc-600 bg-zinc-800/80 text-zinc-100"
+                : "border-zinc-800 bg-transparent text-zinc-500 hover:text-zinc-300"
+            }`}
+            aria-pressed={macdOn}
+            title="MACD (12/26/9) — 추세 전환 신호"
+          >
+            <span
+              className="inline-block h-2 w-2 rounded-full"
+              style={{ backgroundColor: macdOn ? "#60a5fa" : "transparent", border: "1px solid #60a5fa" }}
+            />
+            MACD
+          </button>
+        </div>
+      )}
       <div className="mb-1 flex flex-wrap items-center gap-1.5 px-1">
         {/*
           전체화면 모드 한정 종목 라벨 — 일반 모드는 위에 PriceHero 가 종목명/코드를 크게 보여주지만
           fullscreen 은 fixed inset 으로 PriceHero 가 가려져서 무슨 종목 차트인지 식별이 어려워짐.
-          툴바 leading 자리에 작은 라벨을 끼워 시각적 노이즈 최소로 보완.
+          actions row leading 자리에 작은 라벨을 끼워 시각적 노이즈 최소로 보완.
           (캔버스 위의 CrosshairLabel 과 위치 겹치지 않도록 캔버스가 아닌 툴바에 둠.)
         */}
         {fullscreen && (
@@ -942,67 +1011,6 @@ export function StockChart({ chart, prediction, targets }: Props) {
             <span className="font-mono text-[10px] text-zinc-500">{chart.code}</span>
           </span>
         )}
-        {showSma && (
-          <>
-            {SMA_PRESETS.map((p) => {
-              const on = active.has(p.window);
-              return (
-                <button
-                  key={p.window}
-                  type="button"
-                  onClick={() => toggle(p.window)}
-                  className={`flex items-center gap-1 rounded-full border px-2 py-0.5 text-[10px] transition ${
-                    on
-                      ? "border-zinc-600 bg-zinc-800/80 text-zinc-100"
-                      : "border-zinc-800 bg-transparent text-zinc-500 hover:text-zinc-300"
-                  }`}
-                  aria-pressed={on}
-                >
-                  <span
-                    className="inline-block h-2 w-2 rounded-full"
-                    style={{ backgroundColor: on ? p.color : "transparent", border: `1px solid ${p.color}` }}
-                  />
-                  {p.label}
-                </button>
-              );
-            })}
-            <span className="mx-1 text-zinc-700">|</span>
-            <button
-              type="button"
-              onClick={() => setRsiOn((v) => !v)}
-              className={`flex items-center gap-1 rounded-full border px-2 py-0.5 text-[10px] transition ${
-                rsiOn
-                  ? "border-zinc-600 bg-zinc-800/80 text-zinc-100"
-                  : "border-zinc-800 bg-transparent text-zinc-500 hover:text-zinc-300"
-              }`}
-              aria-pressed={rsiOn}
-              title="상대강도지수 (Relative Strength Index, 14일)"
-            >
-              <span
-                className="inline-block h-2 w-2 rounded-full"
-                style={{ backgroundColor: rsiOn ? "#e879f9" : "transparent", border: "1px solid #e879f9" }}
-              />
-              RSI
-            </button>
-            <button
-              type="button"
-              onClick={() => setMacdOn((v) => !v)}
-              className={`flex items-center gap-1 rounded-full border px-2 py-0.5 text-[10px] transition ${
-                macdOn
-                  ? "border-zinc-600 bg-zinc-800/80 text-zinc-100"
-                  : "border-zinc-800 bg-transparent text-zinc-500 hover:text-zinc-300"
-              }`}
-              aria-pressed={macdOn}
-              title="MACD (12/26/9) — 추세 전환 신호"
-            >
-              <span
-                className="inline-block h-2 w-2 rounded-full"
-                style={{ backgroundColor: macdOn ? "#60a5fa" : "transparent", border: "1px solid #60a5fa" }}
-              />
-              MACD
-            </button>
-          </>
-        )}
         <button
           type="button"
           onClick={() => {