feat(storage): add offline data validation and strengthen storage/index integrity checks

rust/crates/rustdb/src/main.rs

@@ -25,6 +25,10 @@ struct Cli {
     #[arg(long)]
     validate: bool,
 
+    /// Validate data integrity of a storage directory (offline check)
+    #[arg(long, value_name = "PATH")]
+    validate_data: Option<String>,
+
     /// Run in management mode (JSON-over-stdin IPC for TypeScript wrapper)
     #[arg(long)]
     management: bool,
@@ -55,7 +59,7 @@ async fn main() -> Result<()> {
     let options = RustDbOptions::from_file(&cli.config)
         .map_err(|e| anyhow::anyhow!("Failed to load config '{}': {}", cli.config, e))?;
 
-    // Validate-only mode
+    // Validate-only mode (config)
     if cli.validate {
         match options.validate() {
             Ok(()) => {
@@ -69,6 +73,18 @@ async fn main() -> Result<()> {
         }
     }
 
+    // Validate data integrity mode
+    if let Some(ref data_path) = cli.validate_data {
+        tracing::info!("Validating data integrity at {}", data_path);
+        let report = rustdb_storage::validate::validate_data_directory(data_path)
+            .map_err(|e| anyhow::anyhow!("Validation failed: {}", e))?;
+        report.print_summary();
+        if report.has_errors() {
+            std::process::exit(1);
+        }
+        return Ok(());
+    }
+
     // Create and start server
     let mut db = RustDb::new(options).await?;
     db.start().await?;