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

3 files changed, 31 insertions, 0 deletions

diff --git a/internal/config/config.go b/internal/config/config.go
index 4e11c56..9c3c3cd 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -40,6 +40,8 @@ type Config struct {
 	Width           int                        `toml:"width"`
 	All             bool                       `toml:"all"`
 	Offline         bool                       `toml:"offline"`
+	WebTheme        string                     `toml:"web_theme"`
+	WebPort         int                        `toml:"web_port"`
 	Parts           map[string]map[string]bool `toml:"parts"`
 }
 
@@ -65,6 +67,8 @@ func Default() Config {
 		Width:           0,
 		All:             false,
 		Offline:         false,
+		WebTheme:        "transfiguration",
+		WebPort:         0,
 		Parts:           nil,
 	}
 }
diff --git a/internal/config/config.toml b/internal/config/config.toml
index d31e2c4..4ad3289 100644
--- a/internal/config/config.toml
+++ b/internal/config/config.toml
@@ -6,6 +6,8 @@ default_version  = "pl"     # TUI start / `lectio show` default
 width            = 0        # CLI wrap width; 0 = detect terminal
 all              = false    # default to all parts (true) or just the gospel (false)
 offline          = false    # true = never fetch; read only harvested sigla + cache
+web_theme        = "transfiguration"  # built-in order/season theme or a user theme in ~/.config/lectio/themes/
+web_port         = 0        # lectio-web port; 0 = auto-pick a free port
 
 # Which parts to show. Both tables are commented out -> every part is shown.
 # Uncomment a table and set a part to false to hide it; parts you don't list
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") {