docs: add architecture documentation for remaining 8 components (16-23)

New documentation files:
- 16-MT5-Connector: Broker bridge with auto-reconnect & Polars native
- 17-Configuration: 6 sub-configs with capital mode auto-adjustment
- 18-Trade-Logger: Dual storage (PostgreSQL + CSV), thread-safe
- 19-Position-Manager: 7 action conditions, trailing SL, market close handler
- 20-Risk-Engine: Kelly Criterion sizing, circuit breaker, order validation
- 21-Database: PostgreSQL integration with 6 repositories
- 22-Train-Models: Initial training script (HMM + XGBoost)
- 23-Main-Live-Orchestrator: Main loop coordinating 15+ components

Updated README.md with complete index of all 23 components.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/arsitektur-ai/19-Position-Manager.md

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+# Position Manager — Manajemen Posisi Cerdas
+
+> **File:** `src/position_manager.py`
+> **Class:** `SmartPositionManager`, `SmartMarketCloseHandler`
+> **Fitur:** Trailing SL, Profit Protection, Market Close Handler
+
+---
+
+## Apa Itu Position Manager?
+
+Position Manager mengelola posisi terbuka secara **aktif dan cerdas** — trailing stop loss, proteksi profit, dan keputusan otomatis saat market mendekati penutupan.
+
+**Analogi:** Position Manager seperti **co-pilot yang mengawasi perjalanan** — mengamankan keuntungan saat angin baik, dan mengambil tindakan darurat saat cuaca memburuk.
+
+---
+
+## 2 Komponen Utama
+
+### A. SmartPositionManager
+
+Mengelola posisi aktif: trailing SL, breakeven, profit protection.
+
+### B. SmartMarketCloseHandler
+
+Keputusan cerdas saat market mendekati penutupan (harian/weekend).
+
+---
+
+## SmartPositionManager — 7 Kondisi Aksi
+
+Untuk setiap posisi terbuka, dicek berurutan:
+
+### 0. Market Close Check (Prioritas Tertinggi)
+
+```
+Dekat market close?
+├── Profit >= $10 + dekat close → CLOSE (amankan profit)
+├── Loss + dekat weekend + SL >50% hit → CLOSE (gap risk)
+├── Loss + dekat weekend + loss > $100 → CLOSE (gap risk)
+└── Loss kecil + dekat weekend → HOLD (bisa recovery Senin)
+```
+
+### 1. Regime Danger
+
+```
+Regime CRISIS atau HIGH_VOLATILITY + profit > $50:
+  → CLOSE (amankan profit dari volatilitas)
+```
+
+### 2. Opposite Signal
+
+```
+Posisi BUY + sinyal bearish kuat + profit > $25:
+  → CLOSE (amankan sebelum reversal)
+
+Posisi SELL + sinyal bullish kuat + profit > $25:
+  → CLOSE (amankan sebelum reversal)
+```
+
+### 3. Drawdown from Peak
+
+```
+Peak profit > $50 DAN drawdown > 30% dari peak:
+  → CLOSE (profit sudah turun terlalu banyak)
+
+Contoh: Peak $80, sekarang $50 → drawdown 37.5% → CLOSE
+```
+
+### 4. High Urgency
+
+```
+Urgency score >= 7 (dari 10) DAN profit > 0:
+  → CLOSE (banyak sinyal bahaya bersamaan)
+```
+
+### 5. Breakeven Protection
+
+```
+Profit >= 15 pips:
+  → Pindah SL ke breakeven + 2 poin buffer
+  (tidak bisa rugi lagi)
+```
+
+### 6. Trailing Stop
+
+```
+Profit >= 25 pips:
+  → SL mengikuti harga dengan jarak 10 pips
+  (kunci profit sambil biarkan profit berjalan)
+```
+
+### 7. Default: HOLD
+
+```
+Tidak ada kondisi terpenuhi → HOLD posisi
+```
+
+---
+
+## SmartMarketCloseHandler
+
+### Market Hours (XAUUSD)
+
+```
+Minggu 17:00 EST (Senin 05:00 WIB) → Jumat 17:00 EST (Sabtu 05:00 WIB)
+24 jam, 5 hari seminggu
+
+Daily close:  05:00 WIB (= 17:00 EST hari sebelumnya)
+Weekend close: Sabtu 05:00 WIB (= Jumat 17:00 EST)
+```
+
+### Konfigurasi
+
+```python
+SmartMarketCloseHandler(
+    daily_close_hour_wib=5,          # 05:00 WIB
+    hours_before_close=2.0,          # "Dekat close" = 2 jam sebelumnya
+    min_profit_to_take=10.0,         # Ambil profit >= $10 sebelum close
+    max_loss_to_hold=100.0,          # Hold loss sampai $100
+    weekend_loss_cut_percent=50.0,   # Cut jika SL >50% hit sebelum weekend
+)
+```
+
+### 4 Rekomendasi
+
+| Rekomendasi | Kondisi | Aksi |
+|-------------|---------|------|
+| **CLOSE_PROFIT** | Profit + dekat close | Tutup, amankan profit |
+| **CUT_LOSS_WEEKEND** | Loss besar + dekat weekend | Tutup, hindari gap |
+| **HOLD_LOSS** | Loss kecil + dekat close | Hold, bisa recovery |
+| **NORMAL** | Belum dekat close | Lanjut normal |
+
+---
+
+## Market Analysis (Urgency Score)
+
+```
+Score dimulai dari 0, lalu ditambah:
+
+Regime crisis/high_vol:     +3
+ML opposite >75% confidence: +2
+RSI >75 (overbought):       +2
+RSI <25 (oversold):         +2
+Trend + momentum berlawanan: +3
+
+Total max: ~10
+Score >= 7 = HIGH URGENCY → tutup jika ada profit
+```
+
+---
+
+## Konfigurasi SmartPositionManager
+
+```python
+SmartPositionManager(
+    breakeven_pips=15.0,             # Breakeven setelah 15 pips profit
+    trail_start_pips=25.0,           # Mulai trailing setelah 25 pips
+    trail_step_pips=10.0,            # Trail distance: 10 pips
+    min_profit_to_protect=50.0,      # Min $50 untuk proteksi profit
+    max_drawdown_from_peak=30.0,     # Max 30% drawdown dari peak
+    enable_market_close_handler=True, # Aktifkan market close handler
+    min_profit_before_close=10.0,    # Take profit $10+ sebelum close
+    max_loss_to_hold=100.0,          # Hold loss sampai $100
+)
+```