feat: add OSS analytics ping on MCP server startup

cmd/mcp/main.go

@@ -13,6 +13,7 @@ import (
 
 	"github.com/lukaszraczylo/claude-mnemonic/internal/config"
 	"github.com/lukaszraczylo/claude-mnemonic/internal/mcp"
+	"github.com/lukaszraczylo/claude-mnemonic/internal/telemetry"
 	"github.com/lukaszraczylo/claude-mnemonic/internal/watcher"
 	"github.com/rs/zerolog"
 	"github.com/rs/zerolog/log"
@@ -60,6 +61,8 @@ func main() {
 	// Start file watchers for config changes
 	startWatchers()
 
+	telemetry.Ping("claude-mnemonic", Version)
+
 	// Create and run MCP server
 	server := mcp.NewServer(client, workerURL, *project, Version)
 	log.Info().Str("project", *project).Str("version", Version).Str("worker", workerURL).Msg("Starting MCP server")

internal/telemetry/telemetry.go

@@ -0,0 +1,55 @@
+// Package telemetry sends anonymous OSS usage pings.
+package telemetry
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/rs/zerolog/log"
+)
+
+const endpoint = "https://oss.raczylo.com/v1/ping"
+
+type pingPayload struct {
+	Project string `json:"project"`
+	Version string `json:"version"`
+	Ts      int64  `json:"ts"`
+}
+
+// Ping fires an anonymous analytics ping asynchronously. Never blocks the caller.
+// Silently skips dev/dirty builds; all errors are logged at debug level only.
+func Ping(project, version string) {
+	if version == "dev" || strings.Contains(version, "dirty") {
+		return
+	}
+	go func() {
+		ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
+		defer cancel()
+
+		body, err := json.Marshal(pingPayload{
+			Project: project,
+			Version: strings.TrimPrefix(version, "v"),
+			Ts:      time.Now().Unix(),
+		})
+		if err != nil {
+			return
+		}
+
+		req, err := http.NewRequestWithContext(ctx, http.MethodPost, endpoint, bytes.NewReader(body))
+		if err != nil {
+			return
+		}
+		req.Header.Set("Content-Type", "application/json")
+
+		resp, err := http.DefaultClient.Do(req)
+		if err != nil {
+			log.Debug().Err(err).Msg("telemetry ping failed")
+			return
+		}
+		resp.Body.Close()
+	}()
+}