Revert to FinViz daily charts, remove custom chart generation

Remove Finnhub + QuickChart candlestick chart code. Chart generation will be handled by a separate service in the future.

Simplified back to FinViz daily charts for reliability.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

bot.py

@@ -169,20 +169,9 @@ class StockBot(commands.Bot):
         embed.add_field(name="Change", value=change_str, inline=True)
         embed.add_field(name="Previous Close", value=f"${stock_data['previous_close']}", inline=True)
 
-        # Add 5-minute intraday chart from Finnhub + QuickChart
-        if hasattr(self.stock_api, 'get_intraday_candles'):
-            candles = self.stock_api.get_intraday_candles(ticker, resolution=5, days_back=1)
-            if candles:
-                chart_url = self.stock_api.generate_chart_url(ticker, candles)
-                embed.set_image(url=chart_url)
-            else:
-                # Fallback to FinViz daily chart if intraday data unavailable
-                chart_url = f"https://finviz.com/chart.ashx?t={ticker}&ty=c&ta=1&p=d&s=l"
-                embed.set_image(url=chart_url)
-        else:
-            # Fallback for non-Finnhub APIs
-            chart_url = f"https://finviz.com/chart.ashx?t={ticker}&ty=c&ta=1&p=d&s=l"
-            embed.set_image(url=chart_url)
+        # Add FinViz daily chart
+        chart_url = f"https://finviz.com/chart.ashx?t={ticker}&ty=c&ta=1&p=d&s=l"
+        embed.set_image(url=chart_url)
 
         market_status = "🟢 Market Open" if stock_data['market_open'] else "🔴 Market Closed"
         embed.set_footer(text=f"{market_status}")

stock_api/finnhub_api.py

@@ -1,11 +1,9 @@
 import finnhub
 import logging
-from typing import Optional, Dict, Any, List
+from typing import Optional, Dict, Any
 from .base import StockAPIBase
-from datetime import datetime, timedelta
+from datetime import datetime
 import pytz
-import urllib.parse
-import json
 
 
 logger = logging.getLogger(__name__)
@@ -82,94 +80,3 @@ class FinnhubAPI(StockAPIBase):
         except Exception as e:
             logger.error(f"Finnhub API unavailable: {e}")
             return False
-
-    def get_intraday_candles(self, ticker: str, resolution: int = 5, days_back: int = 1) -> Optional[List[Dict[str, Any]]]:
-        """
-        Retrieve intraday candlestick data from Finnhub.
-
-        Args:
-            ticker: Stock ticker symbol
-            resolution: Candle resolution in minutes (1, 5, 15, 30, 60)
-            days_back: Number of days of historical data to fetch
-
-        Returns:
-            List of candle dictionaries or None if unavailable
-        """
-        try:
-            # Calculate time range (Unix timestamps)
-            now = datetime.now(pytz.timezone('America/New_York'))
-            end_time = int(now.timestamp())
-            start_time = int((now - timedelta(days=days_back)).timestamp())
-
-            # Fetch candle data
-            candles = self.client.stock_candles(ticker, resolution, start_time, end_time)
-
-            if not candles or candles.get('s') != 'ok':
-                logger.warning(f"No candle data available for {ticker}")
-                return None
-
-            # Format candles for chart consumption
-            formatted_candles = []
-            for i in range(len(candles['t'])):
-                formatted_candles.append({
-                    'x': candles['t'][i] * 1000,  # Convert to milliseconds
-                    'o': round(candles['o'][i], 2),
-                    'h': round(candles['h'][i], 2),
-                    'l': round(candles['l'][i], 2),
-                    'c': round(candles['c'][i], 2)
-                })
-
-            return formatted_candles
-
-        except Exception as e:
-            logger.error(f"Error fetching candles for {ticker}: {e}")
-            return None
-
-    def generate_chart_url(self, ticker: str, candles: List[Dict[str, Any]]) -> str:
-        """
-        Generate QuickChart URL for candlestick chart.
-
-        Args:
-            ticker: Stock ticker symbol
-            candles: List of candle dictionaries with x, o, h, l, c keys
-
-        Returns:
-            QuickChart URL string
-        """
-        # Limit to last 50 candles for readability
-        chart_data = candles[-50:] if len(candles) > 50 else candles
-
-        chart_config = {
-            'type': 'candlestick',
-            'data': {
-                'datasets': [{
-                    'label': f'{ticker} 5-Minute',
-                    'data': chart_data
-                }]
-            },
-            'options': {
-                'plugins': {
-                    'title': {
-                        'display': True,
-                        'text': f'{ticker} - 5 Minute Chart'
-                    }
-                },
-                'scales': {
-                    'x': {
-                        'type': 'time',
-                        'time': {
-                            'unit': 'minute',
-                            'displayFormats': {
-                                'minute': 'HH:mm'
-                            }
-                        }
-                    }
-                }
-            }
-        }
-
-        # Encode config for URL
-        config_json = json.dumps(chart_config)
-        encoded_config = urllib.parse.quote(config_json)
-
-        return f"https://quickchart.io/chart?v=3&c={encoded_config}&width=800&height=400"