docs: finalize gemini.md with full technical specs and resilience logic

GEMINI.md

@@ -1,60 +1,46 @@
 # Trading212 Python Scalping Bot - "Touch & Turn" (Opening Range Reversal)
 
-This project implements the "Touch & Turn" scalping strategy, originally designed for ProRealTime, translated into Python for the Trading212 API. It is optimized for the UK ISA environment using Inverse ETPs for shorting.
-
-## Project Overview
-
-*   **Strategy:** Opening Range Liquidity Reversal (Touch & Turn).
-*   **Asset Class:** US Stocks (e.g., NVDA, ARM, TSLA).
-*   **Timeframe:** 15-minute chart.
-*   **Operating Window:** 09:30 - 11:00 EST (Opening of the US Regular Trading Session).
+This project implements the "Touch & Turn" scalping strategy for the Trading212 API, optimized for the UK ISA environment.
 
 ## Strategy Logic (The Workflow)
 
-1.  **Identify the Opening Candle:** Capture the `High`, `Low`, `Open`, and `Close` of the first 15-minute candle of the session (09:30 to 09:45 EST).
-2.  **Filter for Liquidity:** 
-    - The opening range (`High - Low`) must be at least **25% of the 14-day ATR**. If smaller, the bot stays flat.
+1.  **Identify Opening Candle:** Capture the 15m candle (09:30 to 09:45 EST).
+2.  **Filter for Liquidity:** Opening range must be >= 25% of 14-day ATR.
 3.  **Determine Direction:**
-    - If the candle is **Bearish** (Close < Open): Prepare for a **LONG** entry.
-    - If the candle is **Bullish** (Close > Open): Prepare for a **SHORT** entry.
-4.  **ISA-Compliant Shorting:** 
-    - Since standard shorting is forbidden in a UK ISA, the bot automatically substitutes SHORT signals with **BUY orders for 3x Inverse ETPs** (e.g., 3SLA for TSLA).
-5.  **Execution:**
-    - Uses **Market Orders** at 09:45 EST for immediate entry.
-    - Recalculates SL/TP brackets based on the **Actual Fill Price** fetched from the portfolio.
-6.  **Risk Management:**
-    - **Position Sizing:** Risks **1% of account balance** per trade.
-    - **Virtual Balance:** In demo mode, subtracts £4,750 from total value to simulate a realistic £250 starting point.
-    - **Targets:** 38.2% Fibonacci retracement level. Risk:Reward ratio of 1:2.
-7.  **Automatic Exit:** Force close any open positions at 11:00 EST via Market Order.
+    - Bearish (Close < Open): Prepare **LONG** (Buy at Low).
+    - Bullish (Close > Open): Prepare **SHORT** (Substitute with **3x Inverse ETP BUY** in ISA).
+4.  **Execution (09:45 EST):**
+    - Entry via **Market Order** for immediate fill.
+    - **Actual Fill Price** fetched from portfolio is used for all bracket calculations.
+5.  **Hybrid Exit Strategy:**
+    - **Broker-Side:** Physical **Stop Loss** order placed immediately for protection.
+    - **Bot-Side:** **Take Profit** monitored manually by polling current market price.
+    - This bypasses ISA restrictions against multiple pending sell orders for the same shares.
+6.  **Automatic Exit (11:00 EST):** Force close via Market Order and cleanup pending SL.
+
+## Risk & Capital Management
+
+*   **Virtual Balance Simulation:** In demo mode, subtracts £4,750 from total equity to simulate a realistic £250 starting point.
+*   **1% Risk Rule:** Risks exactly 1% of the Virtual Balance per trade.
+*   **Capital Partitioning:** Divides total available capital (£250) and risk budget equally among all active ticker threads for the day (max 3).
+*   **Precision & Minimums:** Automatically detects "precision-mismatch" or "min-quantity-exceeded" errors from T212 and retries with corrected values.
 
 ## Technical Architecture
 
-*   **API Client (`src/api/client.py`):** Handles REST Basic Auth calls to Trading212.
-*   **Strategy Engine (`src/strategy/touch_turn.py`):** Calculates setup, Fibonacci levels, and percentage-based targets.
-*   **Execution Manager (`src/execution/manager.py`):** Handles ticker swapping for ISA mode, market order placement, protection bracketing, and status monitoring.
-*   **Orchestrator (`main.py`):** Automates the morning routine: scanning, backtesting, and spawning parallel execution threads.
-*   **Data resilient:** Implements retry loops and random jitter to handle API delays and rate limits (429/403/404 errors).
+*   **`main.py`:** Daily orchestrator. Scan -> Backtest -> Select Top 3 -> Spawn Parallel Threads. Handles early API verification and unbuffered logging.
+*   **`src/api/client.py`:** REST wrapper with Basic Auth.
+*   **`src/strategy/touch_turn.py`:** Setup logic, Fibonacci calculation, and timezone conversion (UTC -> Eastern).
+*   **`src/execution/manager.py`:** Handles ticker swapping (Inverse ETPs), market entries, hybrid brackets, and retry loops with jitter.
+*   **`src/strategy/inverse_mapping.py`:** Map of US stocks to 3x Short Inverse ETPs (GraniteShares/Leverage Shares).
 
-## Getting Started
+## Resilience Features
 
-1.  **Setup Environment:**
-    ```bash
-    pip install -r requirements.txt
-    ```
-2.  **Configuration:** 
-    - Set credentials in your `.env` file.
-    - `ISA_MODE=True` enables Inverse ETP substitution.
-3.  **Operation:**
-    - Best deployed via a systemd timer at 09:30 America/New_York time.
+*   **API Backoff:** Random jitter (1-10s) and exponential retry on 429 errors.
+*   **Order Tracking:** Uses portfolio checks to infer status if order IDs disappear (404).
+*   **Unbuffered Logging:** Force-flushes logs to `logs/bot_*.log` immediately for real-time monitoring.
 
-## TODOs
+## Operation
 
-- [x] Document the strategy logic.
-- [x] Implement ATR calculation and Fibonacci targets.
-- [x] Implement 15m candle capture with timezone resilience.
-- [x] Implement ISA-compliant shorting via Inverse ETP mapping.
-- [x] Implement Risk-based position sizing (Virtual Balance logic).
-- [x] Create a leaderboard-based backtesting engine.
-- [x] Implement resilient execution (Retry loops, Jitter, Portfolio-checks).
-- [x] Add daily logging and P&L tracking (CSV).
+1.  **Timer:** Service managed by `systemd` timer firing at 09:30 America/New_York.
+2.  **Tracking:** P&L recorded in `pnl_tracking.csv` (R-multiple based).
+3.  **Verification:** Always run `./venv/bin/python3 test_api_connection.py` before live days.