Final completeness by time window: ranges keep their posting span, release_final() over blocks of done ranges

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

edge/src/wire.rs

@@ -74,10 +74,13 @@ struct WireFragment<'a> {
 }
 
 #[derive(Serialize)]
+#[serde(rename_all = "camelCase")]
 struct WireBatch<'a> {
     from: i64,
     next: i64,
     headers: u64,
+    posted_low: Option<i64>,
+    posted_high: Option<i64>,
     releases: Vec<WireRelease<'a>>,
     samples: Vec<WireRelease<'a>>,
     candidates: Vec<WireCandidate<'a>>,
@@ -134,6 +137,8 @@ pub fn to_json(batch: &Batch) -> Vec<u8> {
         from: batch.from,
         next: batch.next,
         headers: batch.headers,
+        posted_low: batch.posted_low,
+        posted_high: batch.posted_high,
         releases: batch.releases.iter().map(|r| release(r, None)).collect(),
         samples: batch.samples.iter().map(|(r, rule, key)| release(r, Some((rule, key.as_str())))).collect(),
         candidates: batch.candidates.iter().map(candidate).collect(),