feat(modules): port loldle-emoji

Phase 6a of go-port-cloud-run; first of 5 sub-cooks for Phase 6 loldle
variants. Implements binary right/wrong scoring (no attribute compare).
Per-subject keylock and math/rand.Intn applied from the start, lessons
from prior phase reviews. JS-wire-format decode test added per
code-review concern F#1, locking the migration contract. Helpers
(normalize/subjectFor/argAfterCommand) duplicated from classic loldle;
extraction earmarked for 6b prep.

cmd/server/main.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/tiennm99/miti99bot-go/internal/modules"
 	"github.com/tiennm99/miti99bot-go/internal/modules/loldle"
+	"github.com/tiennm99/miti99bot-go/internal/modules/loldleemoji"
 	"github.com/tiennm99/miti99bot-go/internal/modules/misc"
 	"github.com/tiennm99/miti99bot-go/internal/modules/util"
 	"github.com/tiennm99/miti99bot-go/internal/modules/wordle"
@@ -34,10 +35,11 @@ var secretEnvKeys = []string{
 // import cycle (modules → util → modules).
 func factories() map[string]modules.Factory {
 	return map[string]modules.Factory{
-		"util":   util.New,
-		"misc":   misc.New,
-		"wordle": wordle.New,
-		"loldle": loldle.New,
+		"util":         util.New,
+		"misc":         misc.New,
+		"wordle":       wordle.New,
+		"loldle":       loldle.New,
+		"loldle-emoji": loldleemoji.New,
 	}
 }