Align RecoveryScan and PreadWindow ordering

RecoveryScan's constructor takes four same-typed longs, so its
parameter order now matches the alphabetical field declaration order
(baseSeq, frameCount, lastGood, tornTailBytes) to remove the
positional-swap hazard; scanFile's call site follows. The nested
classes also swap places so PreadWindow precedes RecoveryScan,
keeping members alphabetically sorted per the repo convention.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: mtopolnik

core/src/main/java/io/questdb/client/cutlass/qwp/client/sf/cursor/MmapSegment.java

@@ -646,27 +646,12 @@ private static RecoveryScan scanFile(FilesFacade ff, int fd, String path, long f
                     }
                 }
             }
-            return new RecoveryScan(baseSeq, pos, count, torn);
+            return new RecoveryScan(baseSeq, count, pos, torn);
         } finally {
             Unsafe.free(buf, bufSize, MemoryTag.NATIVE_DEFAULT);
         }
     }
 
-    /** Result of {@link #scanFile}: header fields plus scan outcomes. */
-    private static final class RecoveryScan {
-        final long baseSeq;
-        final long frameCount;
-        final long lastGood;
-        final long tornTailBytes;
-
-        RecoveryScan(long baseSeq, long lastGood, long frameCount, long tornTailBytes) {
-            this.baseSeq = baseSeq;
-            this.lastGood = lastGood;
-            this.frameCount = frameCount;
-            this.tornTailBytes = tornTailBytes;
-        }
-    }
-
     /**
      * Sliding {@code pread} window over one file for the recovery scan.
      * {@link #require} repositions the window when the requested span is not
@@ -721,4 +706,19 @@ boolean require(long pos, int n) {
             return n <= got;
         }
     }
+
+    /** Result of {@link #scanFile}: header fields plus scan outcomes. */
+    private static final class RecoveryScan {
+        final long baseSeq;
+        final long frameCount;
+        final long lastGood;
+        final long tornTailBytes;
+
+        RecoveryScan(long baseSeq, long frameCount, long lastGood, long tornTailBytes) {
+            this.baseSeq = baseSeq;
+            this.frameCount = frameCount;
+            this.lastGood = lastGood;
+            this.tornTailBytes = tornTailBytes;
+        }
+    }
 }