Import 9 alphaear finance skills

- alphaear-deepear-lite: DeepEar Lite API integration
- alphaear-logic-visualizer: Draw.io XML finance diagrams
- alphaear-news: Real-time finance news (10+ sources)
- alphaear-predictor: Kronos time-series forecasting
- alphaear-reporter: Professional financial reports
- alphaear-search: Web search + local RAG
- alphaear-sentiment: FinBERT/LLM sentiment analysis
- alphaear-signal-tracker: Signal evolution tracking
- alphaear-stock: A-Share/HK/US stock data

Updates:
- All scripts updated to use universal .env path
- Added JINA_API_KEY, LLM_*, DEEPSEEK_API_KEY to .env.example
- Updated load_dotenv() to use ~/.config/opencode/.env

skills/alphaear-stock/SKILL.md

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+---
+name: alphaear-stock
+description: Search A-Share/HK/US finance stock tickers and retrieve finance stock price history. Use when user asks about finance stock codes, recent price changes, or specific company finance stock info.
+---
+
+# AlphaEar Stock Skill
+
+## Overview
+
+Search A-Share/HK/US stock tickers and retrieve historical price data (OHLCV).
+
+## Capabilities
+
+### 1. Stock Search & Data
+
+Use `scripts/stock_tools.py` via `StockTools`.
+
+-   **Search**: `search_ticker(query)`
+    -   Fuzzy search by code or name (e.g., "Moutai", "600519").
+    -   Returns: List of `{code, name}`.
+-   **Get Price**: `get_stock_price(ticker, start_date, end_date)`
+    -   Returns DataFrame with OHLCV data.
+    -   Dates format: "YYYY-MM-DD".
+
+## Dependencies
+
+-   `pandas`, `requests`, `akshare`, `yfinance`
+-   `scripts/database_manager.py` (stock tables)