fix(server): handle router setup panic and return error

* return error from New function if route registration panics
* add googleDispatch to handle model:action routing

pkg/server/google.go

@@ -1,8 +1,10 @@
 package server
 
 import (
+	"context"
 	"encoding/json"
 	"net/http"
+	"strings"
 	"time"
 
 	"github.com/uptrace/bunrouter"
@@ -10,6 +12,31 @@ import (
 	"github.com/Warky-Devs/vecna.git/pkg/embedclient"
 )
 
+// googleDispatch parses the wildcard "model:action" segment and routes to the
+// correct Google handler. The colon is a literal method separator in the
+// Google embedding API, not a bunrouter parameter prefix.
+func (h *handler) googleDispatch(w http.ResponseWriter, req bunrouter.Request) error {
+	modelaction := req.Param("modelaction") // e.g. "text-embedding-foo:embedContent"
+	idx := strings.LastIndex(modelaction, ":")
+	if idx < 0 {
+		return writeJSON(w, http.StatusNotFound, map[string]string{"error": "invalid Google API path"})
+	}
+	model := modelaction[:idx]
+	action := modelaction[idx+1:]
+
+	ctx := context.WithValue(req.Context(), modelKey, model)
+	req = req.WithContext(ctx)
+
+	switch action {
+	case "embedContent":
+		return h.googleEmbedContent(w, req)
+	case "batchEmbedContents":
+		return h.googleBatchEmbedContents(w, req)
+	default:
+		return writeJSON(w, http.StatusNotFound, map[string]string{"error": "unknown Google API method: " + action})
+	}
+}
+
 // --- single embedContent ---
 
 type googleEmbedContentRequest struct {
@@ -34,7 +61,7 @@ type googleEmbeddingValues struct {
 }
 
 func (h *handler) googleEmbedContent(w http.ResponseWriter, req bunrouter.Request) error {
-	model := req.Param("model")
+	model, _ := req.Context().Value(modelKey).(string)
 
 	var body googleEmbedContentRequest
 	if err := json.NewDecoder(req.Body).Decode(&body); err != nil {
@@ -89,7 +116,7 @@ type googleBatchResponse struct {
 }
 
 func (h *handler) googleBatchEmbedContents(w http.ResponseWriter, req bunrouter.Request) error {
-	model := req.Param("model")
+	model, _ := req.Context().Value(modelKey).(string)
 
 	var body googleBatchRequest
 	if err := json.NewDecoder(req.Body).Decode(&body); err != nil {