fix: refine flowchart arrow alignment and numeric literal consistency

- Fine-tune flowchart merge point arrows (HTML): adjust horizontal
  endpoints from 440/460 to 435/465 and vertical endpoints from 800/910
  to 795/895 for better visual alignment
- Fix numeric literal consistency (postgre.md): change COALESCE fallback
  from 0.00 to 0.0 to match earlier 100.0 formatting style

Author: myoshi2891

SQL/Leetcode/Intermediate Join/1174. Immediate Food Delivery II/Claude Sonnet 4.5 Extended/Immediate_Food_Delivery_II.html

@@ -663,7 +663,7 @@ <h3 class="text-xl font-semibold text-teal-800 mt-8 mb-3">
                         <!-- 合流点の矢印 -->
                         <!-- 即日配達から合流 -->
                         <path
-                            d="M 790 690 L 790 760 L 460 760"
+                            d="M 790 690 L 790 760 L 465 760"
                             stroke="#059669"
                             stroke-width="2.5"
                             fill="none"
@@ -672,7 +672,7 @@ <h3 class="text-xl font-semibold text-teal-800 mt-8 mb-3">
 
                         <!-- 予約配達から合流 -->
                         <path
-                            d="M 110 690 L 110 760 L 440 760"
+                            d="M 110 690 L 110 760 L 435 760"
                             stroke="#64748b"
                             stroke-width="2.5"
                             fill="none"
@@ -684,7 +684,7 @@ <h3 class="text-xl font-semibold text-teal-800 mt-8 mb-3">
 
                         <!-- 矢印: 合流 → 割合計算 -->
                         <path
-                            d="M 450 768 L 450 800"
+                            d="M 450 768 L 450 795"
                             stroke="#64748b"
                             stroke-width="2.5"
                             fill="none"
@@ -726,7 +726,7 @@ <h3 class="text-xl font-semibold text-teal-800 mt-8 mb-3">
 
                         <!-- 矢印: 割合計算 → 終了 -->
                         <path
-                            d="M 450 875 L 450 910"
+                            d="M 450 875 L 450 895"
                             stroke="#059669"
                             stroke-width="2.5"
                             fill="none"

SQL/Leetcode/Intermediate Join/1174. Immediate Food Delivery II/Claude Sonnet 4.5 Extended/Immediate_Food_Delivery_II_postgre.md

@@ -91,7 +91,7 @@ SELECT
       100.0 * COUNT(*) FILTER (WHERE is_immediate) / NULLIF(COUNT(*), 0),
       2
     ),
-    0.00
+    0.0
   ) AS immediate_percentage
 FROM first_orders;
 ```