feat: Add Telegram AI Assistant (moltbot-nofx integration)

- Add assistant package with AI Agent runtime
  - agent.go: Core agent loop with tool calling
  - session.go: Conversation memory management
  - tool.go: Tool interface and base implementation
  - trading_tools.go: Trading-specific tools (13 tools)
  - prompts.go: Trading expert system prompts (EN/ZH)

- Add telegram package for Telegram bot integration
  - bot.go: Telegram bot with rate limiting & access control
  - config.go: Environment-based configuration

- Update main.go to initialize Telegram bot on startup
- Update .env.example with new configuration options
- Add gopkg.in/telebot.v3 dependency

Trading tools available:
- Query: get_balance, get_positions, list_traders, get_trader_status
- Control: start_trader, stop_trader
- Trading: get_market_price, open_long, open_short, close_position
- Config: list_strategies, list_exchanges, list_ai_models

go.mod

@@ -5,19 +5,25 @@ go 1.25.3
 require (
 	github.com/adshao/go-binance/v2 v2.8.9
 	github.com/agiledragon/gomonkey/v2 v2.13.0
+	github.com/bybit-exchange/bybit.go.api v0.0.0-20250727214011-c9347d6804d6
+	github.com/elliottech/lighter-go v0.0.0-20251104171447-78b9b55ebc48
 	github.com/ethereum/go-ethereum v1.16.7
 	github.com/gin-gonic/gin v1.11.0
-	github.com/go-telegram-bot-api/telegram-bot-api/v5 v5.5.1
 	github.com/golang-jwt/jwt/v5 v5.2.0
 	github.com/google/uuid v1.6.0
-	github.com/gorilla/websocket v1.5.3
 	github.com/joho/godotenv v1.5.1
+	github.com/lib/pq v1.10.9
 	github.com/pquerna/otp v1.4.0
 	github.com/rs/zerolog v1.34.0
 	github.com/sirupsen/logrus v1.9.3
 	github.com/sonirico/go-hyperliquid v0.26.0
 	github.com/stretchr/testify v1.11.1
 	golang.org/x/crypto v0.42.0
+	golang.org/x/net v0.43.0
+	gopkg.in/telebot.v3 v3.3.8
+	gorm.io/driver/postgres v1.6.0
+	gorm.io/driver/sqlite v1.6.0
+	gorm.io/gorm v1.31.1
 	modernc.org/sqlite v1.40.0
 )
 
@@ -27,7 +33,6 @@ require (
 	github.com/bitly/go-simplejson v0.5.1 // indirect
 	github.com/bits-and-blooms/bitset v1.24.0 // indirect
 	github.com/boombuler/barcode v1.0.1-0.20190219062509-6c824513bacc // indirect
-	github.com/bybit-exchange/bybit.go.api v0.0.0-20250727214011-c9347d6804d6 // indirect
 	github.com/bytedance/sonic v1.14.0 // indirect
 	github.com/bytedance/sonic/loader v0.3.0 // indirect
 	github.com/cloudwego/base64x v0.1.6 // indirect
@@ -39,7 +44,6 @@ require (
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/elastic/go-sysinfo v1.15.4 // indirect
 	github.com/elastic/go-windows v1.0.2 // indirect
-	github.com/elliottech/lighter-go v0.0.0-20251104171447-78b9b55ebc48 // indirect
 	github.com/elliottech/poseidon_crypto v0.0.11 // indirect
 	github.com/ethereum/c-kzg-4844/v2 v2.1.5 // indirect
 	github.com/ethereum/go-verkle v0.2.2 // indirect
@@ -50,6 +54,7 @@ require (
 	github.com/go-playground/validator/v10 v10.27.0 // indirect
 	github.com/goccy/go-json v0.10.4 // indirect
 	github.com/goccy/go-yaml v1.18.0 // indirect
+	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/holiman/uint256 v1.3.2 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
@@ -62,7 +67,6 @@ require (
 	github.com/json-iterator/go v1.1.12 // indirect
 	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
 	github.com/leodido/go-urn v1.4.0 // indirect
-	github.com/lib/pq v1.10.9 // indirect
 	github.com/mailru/easyjson v0.9.1 // indirect
 	github.com/mattn/go-colorable v0.1.14 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
@@ -93,16 +97,12 @@ require (
 	golang.org/x/arch v0.20.0 // indirect
 	golang.org/x/exp v0.0.0-20250620022241-b7579e27df2b // indirect
 	golang.org/x/mod v0.27.0 // indirect
-	golang.org/x/net v0.43.0 // indirect
 	golang.org/x/sync v0.17.0 // indirect
 	golang.org/x/sys v0.36.0 // indirect
 	golang.org/x/text v0.29.0 // indirect
 	golang.org/x/tools v0.36.0 // indirect
 	google.golang.org/protobuf v1.36.9 // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
-	gorm.io/driver/postgres v1.6.0 // indirect
-	gorm.io/driver/sqlite v1.6.0 // indirect
-	gorm.io/gorm v1.31.1 // indirect
 	howett.net/plist v1.0.1 // indirect
 	modernc.org/libc v1.66.10 // indirect
 	modernc.org/mathutil v1.7.1 // indirect