fix: Graphiti memory feature on macOS (#1174)

Fix two issues preventing Graphiti memory from working on macOS:

1. Replace CommonJS require('https') with ESM import in api-validation-service.ts
   - The dynamic require() call fails in ESM context with "require is not defined"
   - Use static import at module level instead

2. Add pandas to requirements.txt
   - pandas is required by real_ladybug for get_as_df() method in query_memory.py
   - Without pandas, database connection test fails with "No module named 'pandas'"

Fixes #1132

Co-authored-by: Andy <119136210+AndyMik90@users.noreply.github.com>

apps/backend/requirements.txt

@@ -14,6 +14,9 @@ secretstorage>=3.3.3; sys_platform == "linux"
 # Requires Python 3.12+ (no Docker required)
 real_ladybug>=0.13.0; python_version >= "3.12"
 graphiti-core>=0.5.0; python_version >= "3.12"
+# pandas is required by real_ladybug for get_as_df() method
+# pandas 2.2.0+ required for pre-built wheels on Python 3.12
+pandas>=2.2.0; python_version >= "3.12"
 
 # Windows-specific dependency for LadybugDB/Graphiti
 # pywin32 provides Windows system bindings required by real_ladybug

apps/frontend/src/main/api-validation-service.ts

@@ -5,6 +5,9 @@
  * Used by the Graphiti memory integration for embedding and LLM operations.
  */
 
+import https from 'https';
+import type { IncomingMessage } from 'http';
+
 export interface ApiValidationResult {
   success: boolean;
   message: string;
@@ -43,8 +46,6 @@ export async function validateOpenAIApiKey(
 
     // Use native https module to avoid additional dependencies
     const result = await new Promise<ApiValidationResult>((resolve) => {
-      const https = require('https');
-
       const options = {
         hostname: 'api.openai.com',
         port: 443,
@@ -57,7 +58,7 @@ export async function validateOpenAIApiKey(
         timeout: 15000,
       };
 
-      const req = https.request(options, (res: { statusCode: number; on: (event: string, callback: (chunk: Buffer) => void) => void }) => {
+      const req = https.request(options, (res: IncomingMessage) => {
         let data = '';
 
         res.on('data', (chunk: Buffer) => {
@@ -66,8 +67,9 @@ export async function validateOpenAIApiKey(
 
         res.on('end', () => {
           const latencyMs = Date.now() - startTime;
+          const statusCode = res.statusCode ?? 0;
 
-          if (res.statusCode === 200) {
+          if (statusCode === 200) {
             resolve({
               success: true,
               message: 'OpenAI API key is valid',
@@ -76,12 +78,12 @@ export async function validateOpenAIApiKey(
                 latencyMs,
               },
             });
-          } else if (res.statusCode === 401) {
+          } else if (statusCode === 401) {
             resolve({
               success: false,
               message: 'Invalid API key. Please check your OpenAI API key.',
             });
-          } else if (res.statusCode === 429) {
+          } else if (statusCode === 429) {
             // Rate limited but key is valid
             resolve({
               success: true,
@@ -96,12 +98,12 @@ export async function validateOpenAIApiKey(
               const errorData = JSON.parse(data);
               resolve({
                 success: false,
-                message: errorData.error?.message || `API error: ${res.statusCode}`,
+                message: errorData.error?.message || `API error: ${statusCode}`,
               });
             } catch {
               resolve({
                 success: false,
-                message: `API error: ${res.statusCode}`,
+                message: `API error: ${statusCode}`,
               });
             }
           }