test: cover pg_introspect → snapshot conversion

Adds enum-mapping tests and a golden fixture catalog with a frozen
content_hash to guard against silent drift in field ordering or upstream
pg_introspect changes that would invalidate stored snapshots.

Also runs cargo fmt across the workspace (server.rs).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: radim

Cargo.lock

@@ -1554,7 +1554,11 @@ impl DryRunServer {
                 annotated.schema.tables.len(),
                 annotated.schema.views.len(),
                 annotated.schema.functions.len(),
-                if annotated.planner.is_some() { "yes" } else { "no" },
+                if annotated.planner.is_some() {
+                    "yes"
+                } else {
+                    "no"
+                },
                 annotated.activity_by_node.len(),
             );
             *self.schema.write().await = Some(annotated);

crates/dry_run_cli/src/mcp/server.rs

@@ -21,5 +21,6 @@ tracing = { workspace = true }
 zstd = { workspace = true }
 
 [dev-dependencies]
+indexmap = "2"
 tokio = { workspace = true }
 tempfile = "3"

crates/dry_run_core/Cargo.toml

@@ -317,3 +317,7 @@ fn convert_extension(e: PgExtension) -> Extension {
         schema: e.schema,
     }
 }
+
+#[cfg(test)]
+#[path = "from_pg_introspect_tests.rs"]
+mod tests;