feat: rewrite LoLdleData in Go

4-stage pipeline: fetch ddragon champions, enrich with release dates
(wiki scrape), regions (Universe API), and lanes (wiki scrape).
Concurrent gender detection via goroutines with semaphore.

data/parser/lane.go

@@ -0,0 +1,70 @@
+package parser
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/PuerkitoBio/goquery"
+)
+
+const wikiDraftPositionURL = "https://leagueoflegends.fandom.com/wiki/List_of_champions_by_draft_position"
+
+// columnLaneMap maps 1-indexed column positions to lane names.
+var columnLaneMap = map[int]string{
+	1: "top",
+	2: "jungle",
+	3: "mid",
+	4: "bottom",
+	5: "support",
+}
+
+// EnrichLanes scrapes the LoL Wiki draft position table to add lane data.
+func EnrichLanes(champions []ChampionResult) ([]ChampionResult, error) {
+	resp, err := http.Get(wikiDraftPositionURL)
+	if err != nil {
+		return nil, fmt.Errorf("fetching wiki draft positions: %w", err)
+	}
+	defer resp.Body.Close()
+
+	doc, err := goquery.NewDocumentFromReader(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("parsing wiki HTML: %w", err)
+	}
+
+	nameIndex := buildNameIndex(champions)
+
+	// The second <tbody> contains the draft position table.
+	doc.Find("tbody").Eq(1).Find("tr").Each(func(_ int, row *goquery.Selection) {
+		cols := row.Find("td")
+		if cols.Length() == 0 {
+			return
+		}
+
+		cols.Each(func(colIdx int, col *goquery.Selection) {
+			// Check if this column has a "Yes" indicator image.
+			if col.Find("img[alt='Yes']").Length() == 0 {
+				return
+			}
+
+			// colIdx is 0-indexed; lane map uses the offset from the name column.
+			lane, ok := columnLaneMap[colIdx]
+			if !ok {
+				return
+			}
+
+			name := strings.TrimSpace(cols.First().Find("a").AttrOr("title", ""))
+			name = strings.ReplaceAll(name, "/LoL", "")
+
+			if idx, found := nameIndex[name]; found {
+				if champions[idx].Lane == "" {
+					champions[idx].Lane = lane
+				} else {
+					champions[idx].Lane += "," + lane
+				}
+			}
+		})
+	})
+
+	return champions, nil
+}