docs: add complete guide, env files, fix docker-compose

- Add GUIDE.md: complete user documentation covering installation,
  Docker deployment, AI providers, MCP server, N8N integration,
  email config, admin panel, env var reference, troubleshooting
- Add mcp-server/.env.example with all MCP-specific variables
- Update .env.docker.example with all 42 environment variables
- Fix docker-compose.yml: parameterize PostgreSQL credentials,
  add missing env vars (CUSTOM_OPENAI, AI_PROVIDER_CHAT,
  ALLOW_REGISTRATION, RESEND_API_KEY)
- Track memento-note/.env.example

memento-note/lib/ai/providers/ollama.ts

@@ -75,7 +75,7 @@ Note content: "${content}"`;
         return JSON.parse(jsonMatch[0]);
       }
 
-      // Support pour le format { "tags": [...] }
+      // Support for { "tags": [...] } format
       const objectMatch = text.match(/\{\s*"tags"\s*:\s*(\[[\s\S]*\])\s*\}/);
       if (objectMatch && objectMatch[1]) {
         return JSON.parse(objectMatch[1]);
@@ -83,7 +83,7 @@ Note content: "${content}"`;
       
       return [];
     } catch (e) {
-      console.error('Erreur API directe Ollama:', e);
+      console.error('Error in Ollama API:', e);
       return [];
     }
   }
@@ -104,7 +104,7 @@ Note content: "${content}"`;
       const data = await response.json();
       return data.embedding;
     } catch (e) {
-      console.error('Erreur embeddings directs Ollama:', e);
+      console.error('Error generating embeddings (Ollama):', e);
       return [];
     }
   }
@@ -116,7 +116,7 @@ Note content: "${content}"`;
         headers: { 'Content-Type': 'application/json' },
         body: JSON.stringify({
           model: this.modelName,
-          prompt: `${prompt}\n\nRéponds UNIQUEMENT sous forme de tableau JSON : [{"title": "string", "confidence": number}]`,
+          prompt: `${prompt}\n\nRespond ONLY as a JSON array: [{"title": "string", "confidence": number}]`,
           stream: false,
         }),
       });
@@ -126,7 +126,7 @@ Note content: "${content}"`;
       const data = await response.json();
       const text = data.response;
 
-      // Extraire le JSON de la réponse
+      // Extract JSON from response
       const jsonMatch = text.match(/\[\s*\{[\s\S]*\}\s*\]/);
       if (jsonMatch) {
         return JSON.parse(jsonMatch[0]);
@@ -134,7 +134,7 @@ Note content: "${content}"`;
 
       return [];
     } catch (e) {
-      console.error('Erreur génération titres Ollama:', e);
+      console.error('Error generating titles (Ollama):', e);
       return [];
     }
   }
@@ -156,7 +156,7 @@ Note content: "${content}"`;
       const data = await response.json();
       return data.response.trim();
     } catch (e) {
-      console.error('Erreur génération texte Ollama:', e);
+      console.error('Error generating text (Ollama):', e);
       throw e;
     }
   }
@@ -187,7 +187,7 @@ Note content: "${content}"`;
       const data = await response.json();
       return { text: data.message?.content?.trim() || '' };
     } catch (e) {
-      console.error('Erreur chat Ollama:', e);
+      console.error('Error in chat (Ollama):', e);
       throw e;
     }
   }