feat(config): add Scaffolding.Boards typed input with 6 defaults

internal/config/config.go

@@ -61,6 +61,16 @@ type RenodeConfig struct {
 	Platforms    []RenodePlatform `yaml:"platforms"`
 }
 
+type Board struct {
+	Name     string `yaml:"name"`
+	FQBN     string `yaml:"fqbn"`
+	Template string `yaml:"template"`
+}
+
+type Scaffolding struct {
+	Boards []Board `yaml:"boards"`
+}
+
 // Config is the fully-resolved runtime configuration.
 type Config struct {
 	Version         int                `yaml:"version"`
@@ -76,6 +86,7 @@ type Config struct {
 	ShellConfig     ShellConfigSection `yaml:"shell_config"`
 	Neovim          NeovimConfig       `yaml:"neovim"`
 	Renode          RenodeConfig       `yaml:"renode"`
+	Scaffolding     Scaffolding        `yaml:"scaffolding"`
 }
 
 const currentVersion = 1
@@ -161,5 +172,8 @@ func merge(base, over Config) Config {
 	if over.Renode.WokwiVersion != "" || len(over.Renode.Platforms) > 0 {
 		out.Renode = over.Renode
 	}
+	if len(over.Scaffolding.Boards) > 0 {
+		out.Scaffolding = over.Scaffolding
+	}
 	return out
 }

internal/config/config_test.go

@@ -108,3 +108,26 @@ func TestLoadRejectsUnknownVersion(t *testing.T) {
 		t.Fatal("expected version error")
 	}
 }
+
+func TestDefaultsCarryScaffoldingBoards(t *testing.T) {
+	cfg, err := Load("/nonexistent/overlay.yaml")
+	if err != nil {
+		t.Fatal(err)
+	}
+	if len(cfg.Scaffolding.Boards) < 6 {
+		t.Fatalf("want >= 6 boards, got %d", len(cfg.Scaffolding.Boards))
+	}
+	want := map[string]string{
+		"uno": "arduino:avr:uno", "mega": "arduino:avr:mega", "nano": "arduino:avr:nano",
+		"esp32": "esp32:esp32:esp32", "esp32s3": "esp32:esp32:esp32s3", "esp8266": "esp8266:esp8266:nodemcuv2",
+	}
+	got := map[string]string{}
+	for _, b := range cfg.Scaffolding.Boards {
+		got[b.Name] = b.FQBN
+	}
+	for name, fqbn := range want {
+		if got[name] != fqbn {
+			t.Errorf("board %q: got fqbn %q, want %q", name, got[name], fqbn)
+		}
+	}
+}

internal/config/defaults.yaml

@@ -97,3 +97,12 @@ renode:
     - name: nrf52840
       repl_path: "platforms/cpus/nrf52840.repl"
       machine: "nRF52840"
+
+scaffolding:
+  boards:
+    - {name: uno, fqbn: "arduino:avr:uno", template: uno}
+    - {name: mega, fqbn: "arduino:avr:mega", template: mega}
+    - {name: nano, fqbn: "arduino:avr:nano", template: nano}
+    - {name: esp32, fqbn: "esp32:esp32:esp32", template: esp32}
+    - {name: esp32s3, fqbn: "esp32:esp32:esp32s3", template: esp32s3}
+    - {name: esp8266, fqbn: "esp8266:esp8266:nodemcuv2", template: esp8266}