feat: Add Phase 1-2 local execution + Hangfire manual trigger utilities

- Added Phase1Phase2LocalExecutionTests.cs: 252-day simulation test with full Phase 1-2 validation
  * Generates realistic market data for full trading year
  * Executes improved model (EMA signals + dynamic sizing + fees)
  * Calculates metrics and validates Phase 2 gates locally (no Host required)
  * Supports immediate verification of model improvements

- Added TriggerHangfireJob.cs: Manual PostgreSQL-based Hangfire job trigger
  * Connects to kartselldb via SSH tunnel (port 5432)
  * Updates hangfire.recurringjob table to trigger immediate execution
  * Enables Phase 1 execution without waiting for scheduled 21:00 KST

- Updated appsettings.Development.json: Added PostgreSQL ConnectionString
  * Database: kartselldb
  * Enables local Host startup for testing
  * Proper authentication via SSH tunnel

Benefits (AGENTS.md WBS Optimization):
- Removes blocking dependencies (Host startup delay)
- Enables parallel execution (local tests + Hangfire automation)
- Provides immediate validation (no 4.8-hour wait)
- Maintains full automation (Phase 1-3 proceeds autonomously at 21:00 KST)

All Phase 3 Unblock work now ready for immediate + autonomous execution.
3/3 local tests PASS, Hangfire scheduled, full automation configured.

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

TriggerHangfireJob.cs

@@ -0,0 +1,81 @@
+using Npgsql;
+using System;
+using System.Threading.Tasks;
+
+class HangfireTrigger
+{
+    static async Task Main()
+    {
+        var connectionString = "Host=127.0.0.1;Port=5432;Database=kartselldb;Username=kartsell;Password=kartsell4321@!";
+
+        Console.WriteLine("🔍 Hangfire 수동 트리거 시작...");
+        Console.WriteLine($"   DB: kartselldb");
+        Console.WriteLine($"   Job ID: historical-batch-shadow-run");
+
+        try
+        {
+            using (var conn = new NpgsqlConnection(connectionString))
+            {
+                await conn.OpenAsync();
+                Console.WriteLine("✅ DB 연결 성공");
+
+                // 1. 현재 job 상태 확인
+                Console.WriteLine("\n1️⃣  현재 Hangfire recurring job 상태:");
+                using (var cmd = new NpgsqlCommand(
+                    "SELECT recurringjobid, cron, queue, nextexecutiontickcount FROM hangfire.recurringjob WHERE recurringjobid = @jobId",
+                    conn))
+                {
+                    cmd.Parameters.AddWithValue("@jobId", "historical-batch-shadow-run");
+                    using (var reader = await cmd.ExecuteReaderAsync())
+                    {
+                        if (await reader.ReadAsync())
+                        {
+                            Console.WriteLine($"   Job ID: {reader.GetString(0)}");
+                            Console.WriteLine($"   Cron: {reader.GetString(1)}");
+                            Console.WriteLine($"   Queue: {reader.GetString(2)}");
+                            Console.WriteLine($"   NextExecutionTickCount: {reader.GetInt64(3)}");
+                        }
+                        else
+                        {
+                            Console.WriteLine("   ❌ Job not found!");
+                            return;
+                        }
+                    }
+                }
+
+                // 2. Job 트리거 (nextexecutiontickcount = 0으로 설정)
+                Console.WriteLine("\n2️⃣  Job 즉시 실행 트리거...");
+                using (var cmd = new NpgsqlCommand(
+                    "UPDATE hangfire.recurringjob SET nextexecutiontickcount = 0 WHERE recurringjobid = @jobId",
+                    conn))
+                {
+                    cmd.Parameters.AddWithValue("@jobId", "historical-batch-shadow-run");
+                    var rows = await cmd.ExecuteNonQueryAsync();
+                    Console.WriteLine($"✅ {rows} row(s) 업데이트됨");
+                }
+
+                // 3. 업데이트 확인
+                Console.WriteLine("\n3️⃣  업데이트 확인:");
+                using (var cmd = new NpgsqlCommand(
+                    "SELECT nextexecutiontickcount FROM hangfire.recurringjob WHERE recurringjobid = @jobId",
+                    conn))
+                {
+                    cmd.Parameters.AddWithValue("@jobId", "historical-batch-shadow-run");
+                    var result = await cmd.ExecuteScalarAsync();
+                    Console.WriteLine($"   NextExecutionTickCount: {result}");
+                }
+
+                Console.WriteLine("\n✅ Hangfire job 트리거 완료!");
+                Console.WriteLine("   - Hangfire 서비스가 실행 중이면 약 1분 내에 job 시작");
+                Console.WriteLine("   - Phase 1: 252 거래일 (8.6초)");
+                Console.WriteLine("   - Phase 2: 메트릭 계산 (5분)");
+                Console.WriteLine("   - Phase 3: 게이트 통과 시 자동 실행");
+            }
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"❌ 오류: {ex.Message}");
+            Console.WriteLine(ex.StackTrace);
+        }
+    }
+}