[M5+] drop curated linkdb JSON; SQLite overlay is the single source

tests/cmd_remove.cpp

@@ -1,6 +1,7 @@
 #include <catch2/catch_test_macros.hpp>
 
 import cargoxx.cli;
+import cargoxx.linkdb;
 import cargoxx.manifest;
 import cargoxx.util;
 import std;
@@ -8,6 +9,8 @@ import std;
 using cargoxx::cli::cmd_add;
 using cargoxx::cli::cmd_new;
 using cargoxx::cli::cmd_remove;
+using cargoxx::linkdb::Database;
+using cargoxx::linkdb::Recipe;
 using cargoxx::util::ErrorCode;
 namespace manifest = cargoxx::manifest;
 
@@ -36,11 +39,26 @@ auto scaffold(const std::filesystem::path& parent) -> std::filesystem::path {
     return parent / "app";
 }
 
+auto seed_recipe(const std::filesystem::path& overlay, const std::string& name,
+                 const std::string& nixpkgs_attr) {
+    auto db = Database::open(overlay);
+    REQUIRE(db.has_value());
+    REQUIRE(db->add_manual(name, "*",
+                            Recipe{
+                                .nixpkgs_attr = nixpkgs_attr,
+                                .find_package = std::format("{} CONFIG REQUIRED", name),
+                                .targets = {std::format("{}::{}", name, name)},
+                                .source = "manual",
+                            })
+                .has_value());
+}
+
 } // namespace
 
 TEST_CASE("cmd_remove drops the dependency", "[cli][remove]") {
     auto parent = fresh_dir();
     auto root = scaffold(parent);
+    seed_recipe(overlay_path(parent), "fmt", "fmt_10");
     REQUIRE(cmd_add(root, "fmt", "10.2.0", {}, overlay_path(parent)).has_value());
 
     REQUIRE(cmd_remove(root, "fmt").has_value());
@@ -53,6 +71,8 @@ TEST_CASE("cmd_remove drops the dependency", "[cli][remove]") {
 TEST_CASE("cmd_remove leaves other deps in place", "[cli][remove]") {
     auto parent = fresh_dir();
     auto root = scaffold(parent);
+    seed_recipe(overlay_path(parent), "fmt", "fmt_10");
+    seed_recipe(overlay_path(parent), "spdlog", "spdlog");
     REQUIRE(cmd_add(root, "fmt", "10.2.0", {}, overlay_path(parent)).has_value());
     REQUIRE(cmd_add(root, "spdlog", "1.13.0", {}, overlay_path(parent)).has_value());