feat(telegram): remap reaction emojis and add /reactions command

Remap status reaction emojis for clarity (tool: 🔥→✍, error: 😱→💔)
and reduce overlap between statuses. Add /reactions command to show
emoji legend table to users.

internal/channels/telegram/commands.go

@@ -85,6 +85,7 @@ func (c *Channel) handleBotCommand(ctx context.Context, message *telego.Message,
 			"/stopall — Stop all running tasks\n" +
 			"/reset — Reset conversation history\n" +
 			"/status — Show bot status\n" +
+			"/reactions — Show reaction emoji legend\n" +
 			"/tasks — List team tasks\n" +
 			"/task_detail <id> — View task detail\n" +
 			"/subagents — List subagent tasks\n" +
@@ -226,6 +227,18 @@ func (c *Channel) handleBotCommand(ctx context.Context, message *telego.Message,
 	case "/writers":
 		c.handleListWriters(ctx, chatID, chatIDStr, isGroup, setThread)
 		return true
+
+	case "/reactions":
+		var lines string
+		for _, r := range reactionLegend {
+			lines += fmt.Sprintf("%s  %s\n", r.Emoji, r.Desc)
+		}
+		reactText := fmt.Sprintf("<b>Reaction Emoji Legend</b>\n\n<pre>%s</pre>\nReaction level: <b>%s</b>", lines, c.config.ReactionLevel)
+		msg := tu.Message(chatIDObj, reactText)
+		msg.ParseMode = telego.ModeHTML
+		setThread(msg)
+		c.bot.SendMessage(ctx, msg)
+		return true
 	}
 
 	return false

internal/channels/telegram/reactions.go

@@ -41,15 +41,32 @@ var telegramSupportedEmojis = map[string]bool{
 // First emoji is preferred; fallback to next if chat restricts it.
 // Ref: TS src/telegram/status-reaction-variants.ts
 var statusReactionVariants = map[string][]string{
-	"queued":    {"👀", "👍", "🔥"},
+	"queued":    {"👀", "🙏", "🤝"},
 	"thinking":  {"🤔", "🤓", "👀"},
-	"tool":      {"🔥", "⚡", "👍"},
-	"coding":    {"👨\u200d💻", "🔥", "⚡"},
-	"web":       {"⚡", "🔥", "👍"},
+	"tool":      {"✍", "⚡", "🔥"},
+	"coding":    {"👨\u200d💻", "✍", "🤓"},
+	"web":       {"⚡", "🌚", "🔥"},
 	"done":      {"👍", "🎉", "💯"},
-	"error":     {"😱", "😨", "🤯"},
-	"stallSoft": {"🥱", "😴", "🤔"},
-	"stallHard": {"😨", "😱", "⚡"},
+	"error":     {"💔", "😱", "😨"},
+	"stallSoft": {"🥱", "😴", "😐"},
+	"stallHard": {"😨", "🤯", "😱"},
+}
+
+// ReactionLegend returns the primary emoji for each status, used by the /reactions command.
+var reactionLegend = []struct {
+	Status string
+	Emoji  string
+	Desc   string
+}{
+	{"queued", "👀", "Queued — waiting to process"},
+	{"thinking", "🤔", "Thinking — processing your request"},
+	{"tool", "✍", "Tool — executing a tool"},
+	{"coding", "👨\u200d💻", "Coding — running code"},
+	{"web", "⚡", "Web — browsing / API call"},
+	{"done", "👍", "Done — completed"},
+	{"error", "💔", "Error — something went wrong"},
+	{"stallSoft", "🥱", "Stall — no activity for 10s"},
+	{"stallHard", "😨", "Stall — no activity for 30s"},
 }
 
 // resolveReactionEmoji picks the first supported emoji for a given status.