Add data export tools for OHLC and tick data

**New Tools:**
- export_ohlc: Export OHLC bar data from MT5 history to CSV/JSON
- export_ticks: Export tick data from MT5 tick database to CSV/JSON
- list_available_data: List available OHLC and tick data in MT5

**Implementation:**
- definitions/data.rs: Tool schemas for data export
- handlers/data.rs: Handlers that scan MT5 directories:
  - history/*.hst files (OHLC)
  - Tester/cache/* (cached data)
  - Bases/* (tick data)
- Provides guidance on how to export since MT5 uses proprietary binary formats
- Includes MQL5 script template for programmatic export

**Note:** MT5 uses proprietary .hst and .ticks binary formats.
Direct export requires MQL5 script using CopyRates()/CopyTicks().

src/tools/definitions/data.rs

@@ -0,0 +1,55 @@
+use serde_json::{json, Value};
+
+pub fn tool_export_ohlc() -> Value {
+    json!({
+        "name": "export_ohlc",
+        "description": "Export OHLC bar data from MetaTrader history to CSV/JSON",
+        "inputSchema": {
+            "type": "object",
+            "required": ["symbol", "timeframe"],
+            "properties": {
+                "symbol": { "type": "string", "description": "Trading symbol (e.g., XAUUSDc, EURUSD)" },
+                "timeframe": { "type": "string", "enum": ["M1", "M5", "M15", "M30", "H1", "H4", "D1", "W1", "MN1"], "description": "Bar timeframe" },
+                "from_date": { "type": "string", "description": "Start date YYYY.MM.DD (default: earliest available)" },
+                "to_date": { "type": "string", "description": "End date YYYY.MM.DD (default: latest available)" },
+                "format": { "type": "string", "enum": ["csv", "json"], "default": "csv", "description": "Output format" },
+                "output_path": { "type": "string", "description": "Output file path (default: auto-generated in /tmp)" },
+                "max_bars": { "type": "integer", "description": "Maximum bars to export (default: 100000)" }
+            }
+        }
+    })
+}
+
+pub fn tool_export_ticks() -> Value {
+    json!({
+        "name": "export_ticks",
+        "description": "Export tick data from MetaTrader tick database to CSV/JSON",
+        "inputSchema": {
+            "type": "object",
+            "required": ["symbol"],
+            "properties": {
+                "symbol": { "type": "string", "description": "Trading symbol (e.g., XAUUSDc, EURUSD)" },
+                "from_date": { "type": "string", "description": "Start date YYYY.MM.DD (default: today)" },
+                "to_date": { "type": "string", "description": "End date YYYY.MM.DD (default: today)" },
+                "format": { "type": "string", "enum": ["csv", "json"], "default": "csv", "description": "Output format" },
+                "output_path": { "type": "string", "description": "Output file path (default: auto-generated in /tmp)" },
+                "max_ticks": { "type": "integer", "description": "Maximum ticks to export (default: 1000000)" },
+                "include_volume": { "type": "boolean", "default": true, "description": "Include tick volume" }
+            }
+        }
+    })
+}
+
+pub fn tool_list_available_data() -> Value {
+    json!({
+        "name": "list_available_data",
+        "description": "List available OHLC and tick data in MetaTrader history/cache",
+        "inputSchema": {
+            "type": "object",
+            "properties": {
+                "symbol": { "type": "string", "description": "Filter by symbol (optional)" },
+                "data_type": { "type": "string", "enum": ["ohlc", "ticks", "both"], "default": "both", "description": "Type of data to list" }
+            }
+        }
+    })
+}

src/tools/definitions/mod.rs

@@ -3,6 +3,7 @@ use serde_json::Value;
 pub mod analytics;
 pub mod backtest;
 pub mod baseline;
+pub mod data;
 pub mod experts;
 pub mod optimization;
 pub mod reports;
@@ -51,6 +52,10 @@ pub fn get_tools_list() -> Value {
         setfiles::tool_describe_sweep(),
         setfiles::tool_list_set_files(),
         setfiles::tool_set_from_optimization(),
+        // Data Export (3 tools)
+        data::tool_export_ohlc(),
+        data::tool_export_ticks(),
+        data::tool_list_available_data(),
         // Reports (11 tools)
         reports::tool_list_reports(),
         reports::tool_search_reports(),