Update README.md

Signed-off-by: Valentin Popov <valentin@popov.link>

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/renovate.json

@@ -0,0 +1,31 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended",
+    ":disableDependencyDashboard"
+  ],
+  "assignees": [
+    "valentineus"
+  ],
+  "labels": [
+    "dependencies",
+    "automated"
+  ],
+  "packageRules": [
+    {
+      "description": "Group patch & minor updates together",
+      "groupName": "all digest updates",
+      "groupSlug": "all-digest",
+      "matchUpdateTypes": [
+        "minor",
+        "patch",
+        "pin",
+        "digest"
+      ],
+      "matchPackageNames": [
+        "*"
+      ],
+      "automerge": true
+    }
+  ]
+}

.github/workflows/ci.yml

@@ -2,9 +2,9 @@ name: CI
 
 on:
   push:
-    branches: [ master ]
+    branches: [master]
   pull_request:
-    branches: [ master ]
+    branches: [master]
 
 permissions:
   contents: read
@@ -14,42 +14,46 @@ jobs:
     name: Test
     runs-on: ubuntu-latest
     steps:
-    - name: Check out code
-      uses: actions/checkout@v4
-    - name: Set up Go
-      uses: actions/setup-go@v5
-      with:
-        go-version: '1.24.2'
-    - name: Cache Go modules
-      uses: actions/cache@v4
-      with:
-        path: |
-          ~/.cache/go-build
-          ~/go/pkg/mod
-        key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-        restore-keys: |
-          ${{ runner.os }}-go-
-    - name: Download dependencies
-      run: go mod download
-    - name: Verify dependencies
-      run: go mod verify
-    - name: Run go vet
-      run: go vet ./...
-    - name: Run tests
-      run: go test -race -coverprofile=coverage.out -covermode=atomic ./...
+      - name: Check out code
+        uses: actions/checkout@v4
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.24.3"
+      - name: Cache Go modules
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/go-build
+            ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+      - name: Download dependencies
+        run: go mod download
+      - name: Verify dependencies
+        run: go mod verify
+      - name: Run go vet
+        run: go vet ./...
+      - name: Run tests
+        run: go test -race -coverprofile=coverage.out -covermode=atomic ./...
+      - name: Upload coverage reports
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
 
   lint:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-    - name: Check out code
-      uses: actions/checkout@v4
-    - name: Set up Go
-      uses: actions/setup-go@v5
-      with:
-        go-version: '1.24.2'
-    - name: Run golangci-lint
-      uses: golangci/golangci-lint-action@v8
-      with:
-        version: latest
-        args: --timeout=5m 
+      - name: Check out code
+        uses: actions/checkout@v4
+      - name: Set up Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: "1.24.3"
+      - name: Run golangci-lint
+        uses: golangci/golangci-lint-action@v8
+        with:
+          version: latest
+          args: --timeout=5m

README.md

@@ -1,5 +1,8 @@
 # MT4 Client Library
 
+[![Go Reference](https://pkg.go.dev/badge/go.popov.link/metatrader4.svg)](https://pkg.go.dev/go.popov.link/metatrader4)
+[![codecov](https://codecov.io/gh/valentineus/go-metatrader4/graph/badge.svg?token=6ZE32TQERQ)](https://codecov.io/gh/valentineus/go-metatrader4)
+
 A lightweight Go client library for interacting with a MetaTrader 4 (MT4) trading server over TCP.
 
 ## Example Usage
@@ -34,7 +37,7 @@ Use `WithAutoClose(false)` if you want to reuse the connection manually via `cli
 - Go 1.24 or later
 - MetaTrader 4 server with TCP access
 
-## Maintainer & Project Info
+## Project Info
 
 - Vanity import path: `go.popov.link/metatrader4`
 - Source mirror (read-only): [code.popov.link](https://code.popov.link/valentineus/go-metatrader4)

internal/conn/conn.go

@@ -7,6 +7,7 @@ import (
 	"time"
 )
 
+// Conn is a wrapper around net.Conn with convenience helpers.
 type Conn struct {
 	netConn net.Conn
 }
@@ -14,6 +15,7 @@ type Conn struct {
 // FromNetConn wraps an existing net.Conn. Useful for tests.
 func FromNetConn(n net.Conn) *Conn { return &Conn{netConn: n} }
 
+// Dial opens a TCP connection to addr using the given timeout.
 func Dial(ctx context.Context, addr string, timeout time.Duration) (*Conn, error) {
 	d := net.Dialer{Timeout: timeout}
 	c, err := d.DialContext(ctx, "tcp", addr)
@@ -23,6 +25,7 @@ func Dial(ctx context.Context, addr string, timeout time.Duration) (*Conn, error
 	return &Conn{netConn: c}, nil
 }
 
+// Close closes the underlying network connection.
 func (c *Conn) Close() error {
 	if c.netConn == nil {
 		return nil
@@ -30,6 +33,7 @@ func (c *Conn) Close() error {
 	return c.netConn.Close()
 }
 
+// Send writes data to the connection with the provided timeout.
 func (c *Conn) Send(ctx context.Context, data []byte, timeout time.Duration) error {
 	if dl, ok := ctx.Deadline(); ok {
 		if err := c.netConn.SetWriteDeadline(dl); err != nil {
@@ -44,6 +48,7 @@ func (c *Conn) Send(ctx context.Context, data []byte, timeout time.Duration) err
 	return err
 }
 
+// Receive reads all data from the connection with the provided timeout.
 func (c *Conn) Receive(ctx context.Context, timeout time.Duration) ([]byte, error) {
 	if dl, ok := ctx.Deadline(); ok {
 		if err := c.netConn.SetReadDeadline(dl); err != nil {

internal/conn/doc.go

@@ -0,0 +1,2 @@
+// Package conn wraps net.Conn with simple timeout helpers.
+package conn

internal/proto/doc.go

@@ -0,0 +1,2 @@
+// Package proto provides helpers for encoding requests and decoding responses.
+package proto

mt4/doc.go

@@ -0,0 +1,5 @@
+// Package mt4 provides a lightweight client for MetaTrader 4 servers.
+//
+// It establishes a TCP connection, sends commands, and returns the decoded
+// server response.
+package mt4