Price reminder and init approval

* Start price reminder grain

* Add config and init grain at startup

* Save init wallet when already init

src/Managing.Application.Abstractions/Grains/ICandleStoreGrain.cs

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+using Managing.Domain.Candles;
+using Orleans;
+
+namespace Managing.Application.Abstractions.Grains;
+
+/// <summary>
+/// Orleans grain interface for candle storage and retrieval.
+/// This grain manages in-memory historical candle data with state persistence
+/// and subscribes to price streams for real-time updates.
+/// </summary>
+public interface ICandleStoreGrain : IGrainWithStringKey
+{
+    /// <summary>
+    /// Gets the current list of historical candles (up to 500 most recent)
+    /// </summary>
+    /// <returns>List of candles ordered by date</returns>
+    Task<List<Candle>> GetCandlesAsync();
+}
+

src/Managing.Application.Abstractions/Grains/IPriceFetcher1DayGrain.cs

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+using Orleans;
+
+namespace Managing.Application.Abstractions.Grains;
+
+/// <summary>
+/// Orleans grain interface for daily price fetching operations.
+/// This stateless worker grain handles fetching daily price data from external APIs 
+/// and publishing to Orleans streams.
+/// </summary>
+public interface IPriceFetcher1DayGrain : IGrainWithIntegerKey
+{
+    /// <summary>
+    /// Fetches daily price data for all supported exchange/ticker combinations
+    /// and publishes new candles to their respective streams.
+    /// </summary>
+    /// <returns>True if the operation completed successfully, false otherwise</returns>
+    Task<bool> FetchAndPublishPricesAsync();
+}
+

src/Managing.Application.Abstractions/Grains/IPriceFetcher1HourGrain.cs

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+using Orleans;
+
+namespace Managing.Application.Abstractions.Grains;
+
+/// <summary>
+/// Orleans grain interface for 1-hour price fetching operations.
+/// This stateless worker grain handles fetching 1-hour price data from external APIs 
+/// and publishing to Orleans streams.
+/// </summary>
+public interface IPriceFetcher1HourGrain : IGrainWithIntegerKey
+{
+    /// <summary>
+    /// Fetches 1-hour price data for all supported exchange/ticker combinations
+    /// and publishes new candles to their respective streams.
+    /// </summary>
+    /// <returns>True if the operation completed successfully, false otherwise</returns>
+    Task<bool> FetchAndPublishPricesAsync();
+}
+

src/Managing.Application.Abstractions/Grains/IPriceFetcher4HourGrain.cs

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+using Orleans;
+
+namespace Managing.Application.Abstractions.Grains;
+
+/// <summary>
+/// Orleans grain interface for 4-hour price fetching operations.
+/// This stateless worker grain handles fetching 4-hour price data from external APIs 
+/// and publishing to Orleans streams.
+/// </summary>
+public interface IPriceFetcher4HourGrain : IGrainWithIntegerKey
+{
+    /// <summary>
+    /// Fetches 4-hour price data for all supported exchange/ticker combinations
+    /// and publishes new candles to their respective streams.
+    /// </summary>
+    /// <returns>True if the operation completed successfully, false otherwise</returns>
+    Task<bool> FetchAndPublishPricesAsync();
+}
+

src/Managing.Application.Abstractions/Grains/IPriceFetcher5MinGrain.cs

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+using Orleans;
+
+namespace Managing.Application.Abstractions.Grains;
+
+/// <summary>
+/// Orleans grain interface for 5-minute price fetching operations.
+/// This stateless worker grain handles fetching 5-minute price data from external APIs 
+/// and publishing to Orleans streams.
+/// </summary>
+public partial interface IPriceFetcher5MinGrain : IGrainWithIntegerKey
+{
+    /// <summary>
+    /// Fetches 5-minute price data for all supported exchange/ticker combinations
+    /// and publishes new candles to their respective streams.
+    /// </summary>
+    /// <returns>True if the operation completed successfully, false otherwise</returns>
+    Task<bool> FetchAndPublishPricesAsync();
+}