Match on version constants instead of number literals

gdn/src/data.rs

@@ -19,7 +19,7 @@ fn migrate(dir: &LockedDataDir) -> anyhow::Result<()> {
     loop {
         let version = dir.read_version().context("failed to migrate data dir")?;
         match version {
-            0 => v0::migrate(dir),
+            v0::VERSION => v0::migrate(dir),
             _ => break Ok(()),
         }
         .with_context(|| format!("failed to migrate data dir from version {version}"))?;

gdn/src/repo.rs

@@ -50,8 +50,8 @@ pub fn load(path: &Path) -> anyhow::Result<Repo> {
 
     #[expect(unused_qualifications)]
     let repo = match version {
-        0 => v0::Repo::load().migrate(),
-        1 => v1::Repo::load(&repository)?.migrate(),
+        v0::VERSION => v0::Repo::load().migrate(),
+        v1::VERSION => v1::Repo::load(&repository)?.migrate(),
         n => bail!("invalid repo version {n}"),
     };