fix: move migrations into adaptive_pipeline crate for publishing

- Move migrations/ from workspace root to adaptive_pipeline/migrations/
- Update sqlx::migrate! path from "../migrations" to "./migrations"
- Fixes cargo publish error: migrations must be in crate for packaging

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

Author: abitofhelp

…ations/20250101000000_initial_schema.sql …ations/20250101000000_initial_schema.sqlmigrations/20250101000000_initial_schema.sql renamed to adaptive_pipeline/migrations/20250101000000_initial_schema.sql migrations/20250101000000_initial_schema.sql renamed to adaptive_pipeline/migrations/20250101000000_initial_schema.sql

@@ -19,7 +19,7 @@ pub async fn ensure_schema(pool: &SqlitePool) -> Result<(), sqlx::Error> {
     debug!("Ensuring database schema is up to date");
 
     // Run migrations - sqlx will automatically track what's been applied
-    sqlx::migrate!("../migrations").run(pool).await?;
+    sqlx::migrate!("./migrations").run(pool).await?;
 
     info!("Database schema is up to date");
     Ok(())