Add backup prune CLI and update roadmap

cli-bin/src/cli/backup.rs

@@ -0,0 +1,67 @@
+// src/cli/backup.rs
+use crate::cli::Format;
+use anyhow::{Context, Result};
+use clap::Args;
+use libmarlin::backup::BackupManager;
+use rusqlite::Connection;
+use std::path::{Path, PathBuf};
+
+/// Options for the `backup` command
+#[derive(Args, Debug)]
+pub struct BackupOpts {
+    /// Directory to store backups (defaults next to DB)
+    #[arg(long)]
+    pub dir: Option<PathBuf>,
+
+    /// Keep only N newest backups
+    #[arg(long)]
+    pub prune: Option<usize>,
+
+    /// Verify a backup file
+    #[arg(long)]
+    pub verify: bool,
+
+    /// Backup file to verify (used with --verify)
+    #[arg(long)]
+    pub file: Option<PathBuf>,
+}
+
+pub fn run(opts: &BackupOpts, db_path: &Path, _conn: &mut Connection, _fmt: Format) -> Result<()> {
+    let backups_dir = opts
+        .dir
+        .clone()
+        .unwrap_or_else(|| db_path.parent().unwrap().join("backups"));
+    let manager = BackupManager::new(db_path, &backups_dir)?;
+
+    if opts.verify {
+        let file = opts
+            .file
+            .as_ref()
+            .context("--file required with --verify")?;
+        let name = file
+            .file_name()
+            .and_then(|n| n.to_str())
+            .context("invalid backup file name")?;
+        let ok = manager.verify_backup(name)?;
+        if ok {
+            println!("Backup OK: {}", name);
+        } else {
+            println!("Backup corrupted: {}", name);
+        }
+        return Ok(());
+    }
+
+    if let Some(n) = opts.prune {
+        let result = manager.prune(n)?;
+        println!(
+            "Pruned {} old backups, kept {}",
+            result.removed.len(),
+            result.kept.len()
+        );
+        return Ok(());
+    }
+
+    let info = manager.create_backup()?;
+    println!("Created backup {}", info.id);
+    Ok(())
+}

cli-bin/src/cli/commands.yaml

@@ -79,3 +79,9 @@ event:
     add:
       args: [file, date, description]
     timeline: {}
+
+backup:
+  description: "Create, prune or verify backups"
+  actions:
+    run:
+      flags: ["--dir", "--prune", "--verify", "--file"]