feat: Phase 1 handover - schema migration, correction mechanism, API fixes

Schema changes: dev.chunks->dev.chunk, remove old_chunk_id/chunk_index
Correction: asr-1.json format, generate/apply scripts
API: 37/37 endpoints fixed and tested
Docs: HANDOVER_V2.0.md for M4

src/core/embedding/comic_embed.rs

@@ -43,8 +43,7 @@ impl Embedder {
     }
 
     fn default_url() -> String {
-        std::env::var("MOMENTRY_EMBED_URL")
-            .unwrap_or_else(|_| "http://localhost:11434".to_string())
+        std::env::var("MOMENTRY_EMBED_URL").unwrap_or_else(|_| "http://localhost:11434".to_string())
     }
 
     pub async fn embed_text(&self, text: &str) -> Result<Vec<f32>> {
@@ -91,7 +90,12 @@ impl Embedder {
                 .await
                 .context("Failed to parse embedding response")?;
 
-            Ok(result.data.into_iter().next().map(|d| d.embedding).unwrap_or_default())
+            Ok(result
+                .data
+                .into_iter()
+                .next()
+                .map(|d| d.embedding)
+                .unwrap_or_default())
         } else {
             let url = format!("{}/api/embeddings", self.base_url);
             let response = self