feat: complete Rust migration with modular architecture

Major changes:
- Migrate Python/shell scripts to Rust modules:
  - analytics/extract.py → src/analytics/extract.rs (ReportExtractor)
  - analytics/analyze.py → src/analytics/analyze.rs (DealAnalyzer)
  - scripts/mqlcompile.sh → src/compile/mql_compiler.rs (MqlCompiler)
  - scripts/backtest_pipeline.sh → src/pipeline/backtest.rs (BacktestPipeline)

- New modular structure:
  - src/models/ - Config, Deal, Metrics, Report structs
  - src/analytics/ - Report parsing and deal analysis
  - src/compile/ - MQL5 compilation via Wine
  - src/pipeline/ - 5-stage backtest orchestration
  - src/tools/ - 27 MCP tool definitions and handlers

- Remove PyInstaller setup (now pure Rust)
- Remove migrated shell scripts (backtest_pipeline.sh, mqlcompile.sh)
- Add GitHub Actions CI/CD for macOS & Linux releases
- Update all documentation for Rust architecture

Binary size: 4.3MB (no Python dependencies)
Tools: 27 MCP tools fully functional

src/models/report.rs

@@ -0,0 +1,60 @@
+use serde::{Deserialize, Serialize};
+use std::path::PathBuf;
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct Report {
+    pub report_dir: PathBuf,
+    pub expert: String,
+    pub symbol: String,
+    pub timeframe: String,
+    pub from_date: String,
+    pub to_date: String,
+    pub metrics_file: PathBuf,
+    pub deals_csv: PathBuf,
+    pub deals_json: PathBuf,
+    pub analysis_file: Option<PathBuf>,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct PipelineMetadata {
+    pub expert: String,
+    pub symbol: String,
+    pub timeframe: String,
+    pub from_date: String,
+    pub to_date: String,
+    pub deposit: f64,
+    pub currency: String,
+    pub model: i32,
+    pub leverage: i32,
+    pub set_file: Option<String>,
+    pub report_dir: String,
+    pub duration_seconds: i64,
+    pub files: FilePaths,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct FilePaths {
+    pub metrics: String,
+    pub analysis: String,
+    pub deals_csv: String,
+    pub deals_json: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct BacktestStatus {
+    pub stage: PipelineStage,
+    pub elapsed_seconds: i64,
+    pub is_complete: bool,
+    pub message: String,
+}
+
+#[derive(Debug, Clone, Serialize, Deserialize)]
+#[serde(rename_all = "UPPERCASE")]
+pub enum PipelineStage {
+    Compile,
+    Clean,
+    Backtest,
+    Extract,
+    Analyze,
+    Done,
+}