cargo fmt: three chains rustfmt splits

Formatting only. portable::instant (from F5), and the ffi's link and unlink
(F2/F3), were laid out by hand without a toolchain; rustfmt splits each chain.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

android/ffi/src/lib.rs

@@ -533,7 +533,9 @@ impl Inkwell {
             Err(CoreError::NotLinked) => None,
             Err(e) => return Err(e),
         };
-        let revoked = link::unlink(&self.db, held).await.map_err(CoreError::store)?;
+        let revoked = link::unlink(&self.db, held)
+            .await
+            .map_err(CoreError::store)?;
         Ok(revoked.into())
     }
 
@@ -739,7 +741,9 @@ impl Inkwell {
         url: &str,
         credential: link::Credential<'_>,
     ) -> Result<Identity, CoreError> {
-        let granted = link::authenticate(url, credential).await.map_err(CoreError::network)?;
+        let granted = link::authenticate(url, credential)
+            .await
+            .map_err(CoreError::network)?;
         self.store_link(&granted.base_url, &granted.token, granted.retention_days)?;
         Ok(granted.identity.into())
     }