config: add web_theme/web_port fields

Add WebTheme (default: "transfiguration") and WebPort (default: 0) to Config
for the upcoming lectio-web binary. WebTheme resolves theme names (built-in
or user files) later in internal/web; WebPort 0 means auto-pick a free port.

- Updated Config struct with new fields
- Set defaults in Default()
- Updated embedded seed config.toml with documentation
- Added TDD tests: TestWebDefaults and TestWebLoadsFromSeed
- Existing tests (TestLoadSeeds, TestLoadOverride) still pass

1 files changed, 25 insertions, 0 deletions

diff --git a/internal/config/config_test.go b/internal/config/config_test.go
index 94c33cd..9b72bc7 100644
--- a/internal/config/config_test.go
+++ b/internal/config/config_test.go
@@ -36,6 +36,31 @@ func TestLoadOverride(t *testing.T) {
 	}
 }
 
+func TestWebDefaults(t *testing.T) {
+	def := Default()
+	if def.WebTheme != "transfiguration" {
+		t.Errorf("WebTheme default wrong: got %q, want %q", def.WebTheme, "transfiguration")
+	}
+	if def.WebPort != 0 {
+		t.Errorf("WebPort default wrong: got %d, want 0", def.WebPort)
+	}
+}
+
+func TestWebLoadsFromSeed(t *testing.T) {
+	dir := t.TempDir()
+	t.Setenv("XDG_CONFIG_HOME", dir)
+	cfg, err := Load()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if cfg.WebTheme != "transfiguration" {
+		t.Errorf("WebTheme from seed wrong: got %q, want %q", cfg.WebTheme, "transfiguration")
+	}
+	if cfg.WebPort != 0 {
+		t.Errorf("WebPort from seed wrong: got %d, want 0", cfg.WebPort)
+	}
+}
+
 func TestPartShown(t *testing.T) {
 	var empty Config
 	if !empty.PartShown("new", "psalm") {