Fix memory-docs line-count SQL edge case, remove stale tmp-referencing test

- memory_docs list_with_metadata: use SQL substr to detect trailing
  newline instead of counting newlines and adding 1 unconditionally
- list_files: remove meta_smoke tests that referenced a non-existent
  scratchpad directory

crates/skald-core/src/db/memory_docs.rs

@@ -102,7 +102,8 @@ pub async fn list_with_metadata(pool: &SqlitePool, prefix: &str) -> Result<Vec<M
     let rows = sqlx::query_as::<_, MemoryEntryMeta>(
         "SELECT path,
                 CASE WHEN content = '' THEN 0
-                     ELSE LENGTH(content) - LENGTH(REPLACE(content, char(10), '')) + 1
+                     ELSE LENGTH(content) - LENGTH(REPLACE(content, char(10), ''))
+                          + CASE WHEN substr(content, -1, 1) = char(10) THEN 0 ELSE 1 END
                 END AS line_count,
                 LENGTH(CAST(content AS BLOB)) AS byte_len
          FROM memory_docs

crates/skald-core/src/tools/fs/list_files.rs

@@ -229,43 +229,3 @@ fn walk(root: &Path, dir: &Path, depth: usize, max_depth: usize, dirs_only: bool
     }
     Ok(())
 }
-
-#[cfg(test)]
-mod meta_smoke {
-    use super::*;
-    const SP: &str = "/private/tmp/claude-501/-Users-dguiducci-projects-skald-circle/1cb4c456-6a62-4c67-abf8-bb93ef73e30c/scratchpad/lf";
-
-    #[test]
-    fn human_size_fmt() {
-        assert_eq!(human_size(0), "0 B");
-        assert_eq!(human_size(512), "512 B");
-        assert_eq!(human_size(18 * 1024), "18 KB");
-        assert_eq!(human_size(1024 * 1024 + 400 * 1024), "1.4 MB");
-    }
-
-    #[test]
-    fn line_counts() {
-        assert_eq!(count_lines(b""), 0);
-        assert_eq!(count_lines(b"a\nb\nc\n"), 3);
-        assert_eq!(count_lines(b"no newline"), 1);
-    }
-
-    #[test]
-    fn entries() {
-        let t = std::path::Path::new(SP).join("three.txt");
-        let e = file_entry(&t, "three.txt".into());
-        println!("three.txt -> {}", serde_json::to_string(&e).unwrap());
-        assert_eq!(e.line_count, Some(3));
-
-        let o = std::path::Path::new(SP).join("one.txt");
-        let e = file_entry(&o, "one.txt".into());
-        println!("one.txt   -> {}", serde_json::to_string(&e).unwrap());
-        assert_eq!(e.line_count, Some(1));
-
-        let b = std::path::Path::new(SP).join("blob.bin");
-        let e = file_entry(&b, "blob.bin".into());
-        println!("blob.bin  -> {}", serde_json::to_string(&e).unwrap());
-        assert_eq!(e.line_count, None); // binary: size only
-        assert!(e.size.is_some());
-    }
-}