feat(docs): Add configuration file setup to agent instructions

Co-authored-by: elisiariocouto <818914+elisiariocouto@users.noreply.github.com>

AGENTS.md

@@ -4,16 +4,20 @@
 
 ### Prerequisites
 - **uv** must be installed for Python dependency management (can be installed via `pip install uv`)
+- **Configuration file**: Copy `config.example.toml` to `config.toml` before running any commands:
+  ```bash
+  cp config.example.toml config.toml
+  ```
 
 ### Generate Mock Database
 The leggen CLI provides a command to generate a mock database for testing:
 
 ```bash
 # Generate sample database with default settings (3 accounts, 50 transactions each)
-uv run leggen generate_sample_db --database /path/to/test.db --force
+uv run leggen --config config.toml generate_sample_db --database /path/to/test.db --force
 
 # Custom configuration
-uv run leggen generate_sample_db --database ./test-data.db --accounts 5 --transactions 100 --force
+uv run leggen --config config.toml generate_sample_db --database ./test-data.db --accounts 5 --transactions 100 --force
 ```
 
 The command outputs instructions for setting the required environment variable to use the generated database.
@@ -24,7 +28,15 @@ The command outputs instructions for setting the required environment variable t
    ```bash
    export LEGGEN_DATABASE_PATH=/path/to/your/generated/database.db
    ```
-3. Start the API server:
+3. Ensure the API can find the configuration file (choose one):
+   ```bash
+   # Option 1: Copy config to the expected location
+   mkdir -p ~/.config/leggen && cp config.toml ~/.config/leggen/config.toml
+   
+   # Option 2: Set environment variable to current config file
+   export LEGGEN_CONFIG_FILE=./config.toml
+   ```
+4. Start the API server:
    ```bash
    uv run leggend
    ```

config.toml

@@ -0,0 +1,30 @@
+[gocardless]
+key = "your-api-key"
+secret = "your-secret-key"
+url = "https://bankaccountdata.gocardless.com/api/v2"
+
+[database]
+sqlite = true
+
+# Optional: Background sync scheduling
+[scheduler.sync]
+enabled = true
+hour = 3      # 3 AM
+minute = 0
+# cron = "0 3 * * *"  # Alternative: use cron expression
+
+# Optional: Discord notifications
+[notifications.discord]
+webhook = "https://discord.com/api/webhooks/..."
+enabled = true
+
+# Optional: Telegram notifications
+[notifications.telegram]
+token = "your-bot-token"
+chat_id = 12345
+enabled = true
+
+# Optional: Transaction filters for notifications
+[filters]
+case-insensitive = ["salary", "utility"]
+case-sensitive = ["SpecificStore"]