fix(openrouter): trim API key and guard against empty key

An OpenRouter key with trailing whitespace/newline (common from
copy-paste) produces "Missing Authentication header" from their API,
which looked identical to a missing key. Trim apiKey on save (schema
level) and on use (defense in depth), fail fast with a clear message
if the stored key is empty, and log a masked key preview + model on
each generation call to make future auth failures diagnosable from
container logs.

server/services/openrouter.ts

@@ -26,16 +26,23 @@ export class OpenRouterService {
       throw new Error('Configuration OpenRouter non trouvée. Veuillez demander à un administrateur de configurer OpenRouter dans les Paramètres.');
     }
 
+    if (!config.apiKey || !config.apiKey.trim()) {
+      throw new Error('Clé API OpenRouter manquante ou vide en base de données. Veuillez la ressaisir dans les Paramètres.');
+    }
+
     const prompt = this.buildPrompt(productInfo, config.systemPrompt);
-    
+
     // Use provided model or fall back to config model
     const modelToUse = modelOverride || config.model;
 
+    const keyPreview = `${config.apiKey.slice(0, 10)}...(len=${config.apiKey.length})`;
+    console.log(`[OpenRouter] Generating with model="${modelToUse}" key=${keyPreview} configUserId=${config.userId}`);
+
     try {
       const response = await fetch(this.baseUrl, {
         method: "POST",
         headers: {
-          "Authorization": `Bearer ${config.apiKey}`,
+          "Authorization": `Bearer ${config.apiKey.trim()}`,
           "Content-Type": "application/json",
           "HTTP-Referer": process.env.APP_URL || "http://localhost:5555",
           "X-Title": "Social Flow"

shared/schema.ts

@@ -394,7 +394,7 @@ export const insertOpenrouterConfigSchema = createInsertSchema(openrouterConfig)
   createdAt: true,
   updatedAt: true,
 }).extend({
-  apiKey: z.string().min(1, "La clé API ne peut pas être vide"),
+  apiKey: z.string().trim().min(1, "La clé API ne peut pas être vide"),
 });
 
 export const updateOpenrouterConfigSchema = insertOpenrouterConfigSchema.partial({