fix: bug fixes, test coverage, and CI workflow

- Fix Nodes.First() panic on empty slice (return nil)
- Fix ticker leak in archive.go (create once, defer Stop)
- Fix cookie path matching for empty and root paths
- Fix lost query params in google.go (u.Query().Set was discarded)
- Fix type assertion panic in useragents.go
- Fix dropped date parse error in powerball.go
- Remove unreachable dead code in megamillions.go and powerball.go
- Simplify document.go WaitForNetworkIdle, remove unused root field
- Remove debug fmt.Println calls across codebase
- Replace panic(err) with stderr+exit in all cmd/ programs
- Fix duckduckgo cmd: remove useless defer, return error on bad safesearch
- Fix archive cmd: ToConfig returns error instead of panicking
- Add 39+ unit tests across 6 new test files
- Add Gitea Actions CI workflow (build, test, vet in parallel)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

sites/archive/archive.go

@@ -130,10 +130,9 @@ func (c Config) Archive(ctx context.Context, b extractor.Browser, target string)
 
 	select {
 	case <-ctx.Done():
-		fmt.Println("context already done before entering the loop:", ctx.Err())
+		slog.Debug("context already done before entering the loop", "err", ctx.Err())
 		return nil, ctx.Err()
 	default:
-		fmt.Println("context not done yet")
 		// Proceed with the loop
 	}
 	// now we are waiting for archive.ph to archive the page and redirect us to the archived page
@@ -141,6 +140,9 @@ func (c Config) Archive(ctx context.Context, b extractor.Browser, target string)
 	// if the page path starts with /wip/ then we are still waiting
 	// also periodically refresh the page just in case
 
+	ticker := time.NewTicker(5 * time.Second)
+	defer ticker.Stop()
+
 	keepGoing := true
 	for keepGoing {
 		select {
@@ -148,14 +150,14 @@ func (c Config) Archive(ctx context.Context, b extractor.Browser, target string)
 			slog.Info("context done")
 			keepGoing = false
 
-		case <-time.NewTicker(5 * time.Second).C:
+		case <-ticker.C:
 			archivedUrl, err := url.Parse(doc.URL())
 
 			if err != nil {
 				continue
 			}
 
-			fmt.Println("checking url:", archivedUrl.String())
+			slog.Debug("checking url", "url", archivedUrl.String())
 			// if the url is not the same as the endpoint, or the path does not start with /wip/ or /submit then we are done
 			if archivedUrl.Hostname() != endpoint.Hostname() || (!strings.HasPrefix(archivedUrl.Path, "/wip/") && !strings.HasPrefix(archivedUrl.Path, "/submit")) {
 				keepGoing = false

sites/archive/cmd/archive/main.go

@@ -28,7 +28,7 @@ var Flags = ArchiveFlags{
 	},
 }
 
-func (f ArchiveFlags) ToConfig(_ context.Context, cmd *cli.Command) archive.Config {
+func (f ArchiveFlags) ToConfig(_ context.Context, cmd *cli.Command) (archive.Config, error) {
 	c := archive.DefaultConfig
 
 	if e := cmd.String("endpoint"); e != "" {
@@ -38,12 +38,12 @@ func (f ArchiveFlags) ToConfig(_ context.Context, cmd *cli.Command) archive.Conf
 	if t := cmd.String("timeout"); t != "" {
 		d, err := time.ParseDuration(t)
 		if err != nil {
-			panic(err)
+			return c, fmt.Errorf("invalid timeout duration: %w", err)
 		}
 		c.Timeout = &d
 	}
 
-	return c
+	return c, nil
 }
 
 func main() {
@@ -122,7 +122,8 @@ func main() {
 	err := cli.Run(context.Background(), os.Args)
 
 	if err != nil {
-		panic(err)
+		fmt.Fprintf(os.Stderr, "error: %v\n", err)
+		os.Exit(1)
 	}
 
 }