overview: one endpoint, live projections and a response cache (m36)

src/tests.zig

@@ -106,7 +106,7 @@ comptime {
     _ = @import("web/server_integration_test.zig");
     _ = @import("server/local_tables.zig");
     _ = @import("web/metrics.zig");
-    _ = @import("web/handlers/stats.zig");
+    _ = @import("web/handlers/overview.zig");
     _ = @import("web/handlers/queries.zig");
     _ = @import("web/handlers/diagnostics.zig");
     _ = @import("web/handlers/lookup.zig");