doc: add more information to readme

Author: LucasCharrier

api/README.md

@@ -8,6 +8,8 @@ This folder contains the backend API for Jardin Mental, built with Node.js, Expr
 
 ## Local Development Setup
 
+> **Important:** In local development, only **Postgres** and **Maildev** run in Docker containers. The Node.js API runs directly on your machine (not in a container).
+
 ### Prerequisites
 
 - **Node.js** (version 14 or higher)
@@ -22,6 +24,8 @@ pnpm install
 
 ### 2. Start Database and Maildev
 
+> **Note:** Make sure Docker is installed and running before executing this command.
+
 From the `api` directory, run:
 
 ```bash
@@ -60,6 +64,16 @@ This will start:
 pnpm test
 ```
 
+### 6. Run Cron Jobs (Optional)
+
+The cron job sends scheduled notifications. To run it manually:
+
+From the `api` directory, run:
+
+```bash
+node reminderCronJobRunner.js
+```
+
 ---
 
 ## Docker Usage

app/README.md

@@ -22,6 +22,8 @@ pnpm install
 
 ## Running the App
 
+> **Note:** All commands below must be run from the `app` folder.
+
 ### Start the development server
 
 ```bash