Rename migrate command to tidy

It now does more than plain data dir migration. I'm not yet sure though
when tidying will be executed during normal operations. During app
startup sounds appropriate, maybe even at the end of open_and_migrate.

gdn-cli/src/commands.rs

@@ -2,20 +2,20 @@ use clap::Parser;
 
 use crate::Environment;
 
-mod migrate;
 mod status;
+mod tidy;
 
 #[derive(Debug, Parser)]
 pub enum Command {
-    Migrate(migrate::Command),
     Status(status::Command),
+    Tidy(tidy::Command),
 }
 
 impl Command {
     pub fn run(self, env: &Environment) -> anyhow::Result<()> {
         match self {
-            Self::Migrate(command) => command.run(env),
             Self::Status(command) => command.run(env),
+            Self::Tidy(command) => command.run(env),
         }
     }
 }

gdn-cli/src/commands/tidy.rs

@@ -2,13 +2,14 @@ use clap::Parser;
 
 use crate::Environment;
 
-/// Create or migrate the data dir, if necessary.
+/// Perform data dir maintenance.
 #[derive(Debug, Parser)]
 pub struct Command {}
 
 impl Command {
     pub fn run(self, env: &Environment) -> anyhow::Result<()> {
-        gdn::data::open_and_migrate(env.data_dir.clone())?;
+        let data = gdn::data::open_and_migrate(env.data_dir.clone())?;
+        gdn::data::tidy(&data)?;
         Ok(())
     }
 }