Initial commit: SRDB - High-performance LSM-Tree database

- Core engine with MemTable, SST, WAL
- B+Tree indexing for SST files  
- Leveled compaction strategy
- Multi-table database management
- Schema validation and secondary indexes
- Query builder with complex conditions
- Web UI with HTMX for data visualization
- Command-line tools for diagnostics

examples/webui/commands/dump_manifest.go

@@ -0,0 +1,58 @@
+package commands
+
+import (
+	"fmt"
+	"log"
+
+	"code.tczkiot.com/srdb"
+)
+
+// DumpManifest 导出 manifest 信息
+func DumpManifest(dbPath string) {
+	db, err := srdb.Open(dbPath)
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer db.Close()
+
+	table, err := db.GetTable("logs")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	engine := table.GetEngine()
+	versionSet := engine.GetVersionSet()
+	version := versionSet.GetCurrent()
+
+	// Check for duplicates in each level
+	for level := 0; level < 7; level++ {
+		files := version.GetLevel(level)
+		if len(files) == 0 {
+			continue
+		}
+
+		// Track file numbers
+		fileMap := make(map[int64][]struct {
+			minKey int64
+			maxKey int64
+		})
+
+		for _, f := range files {
+			fileMap[f.FileNumber] = append(fileMap[f.FileNumber], struct {
+				minKey int64
+				maxKey int64
+			}{f.MinKey, f.MaxKey})
+		}
+
+		// Report duplicates
+		fmt.Printf("Level %d: %d files\n", level, len(files))
+		for fileNum, entries := range fileMap {
+			if len(entries) > 1 {
+				fmt.Printf("  [DUPLICATE] File #%d appears %d times:\n", fileNum, len(entries))
+				for i, e := range entries {
+					fmt.Printf("    Entry %d: min=%d max=%d\n", i+1, e.minKey, e.maxKey)
+				}
+			}
+		}
+	}
+}