Update skills: add website-creator, mql-developer, ecommerce-astro

Changes:
- Add FAL_KEY and GEMINI_API_KEY to .env.example
- Update picture-it to use ~/.config/opencode/.env (unified creds)
- Remove shodh-memory skill (no longer used)
- Remove alphaear-* skills (deprecated)
- Remove thai-frontend-dev skill (replaced by website-creator)
- Remove theme-factory skill
- Add mql-developer skill (MQL5 trading)
- Add ecommerce-astro skill (Astro e-commerce)
- Add website-creator skill (Next.js + Payload CMS)
- Update install script for new skills

skills/mql-developer/README.md

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+# mql-developer
+
+[Claude Code](https://docs.anthropic.com/en/docs/claude-code) skill for professional MQL4/MQL5 development on MetaTrader 4 and MetaTrader 5 platforms.
+
+Covers the full ecosystem: Expert Advisors, custom indicators, scripts, libraries, UI panels, trading operations, external API communication, backtesting, and code protection.
+
+## What It Provides
+
+- **MQL4 & MQL5 language reference** — data types, functions, predefined variables, preprocessor, error handling
+- **OOP & Standard Library (MQL5)** — classes, interfaces, templates, CTrade, CPositionInfo, CCanvas
+- **EA architecture patterns** — single-file, modular (Signal + Trade + Risk + Filter), state machine, multi-timeframe, multi-symbol
+- **Trading operations** — order/position management with retry logic, risk-based position sizing, drawdown control, trailing stops
+- **Indicators & UI** — custom indicators (buffers, draw styles, OnCalculate), graphical objects, CAppDialog panels, scripts
+- **External communication** — WebRequest REST API, JSON handling, Node.js server integration, sockets, inter-program communication
+- **Backtesting** — Strategy Tester modes, walk-forward analysis, Monte Carlo simulation, optimization
+- **Security & licensing** — account-based licensing, server-side validation, anti-decompilation, MQL5 Cloud Protector
+
+## Skill Structure
+
+```
+mql-developer/
+├── SKILL.md                            # Entry point with navigation table
+└── references/
+    ├── mql4-reference.md               # MQL4 language reference
+    ├── mql5-reference.md               # MQL5 OOP, CTrade, Standard Library
+    ├── architecture-patterns.md        # EA architectures and design patterns
+    ├── trading-operations.md           # Orders, risk management, trailing stops
+    ├── indicators-and-ui.md            # Indicators, panels, scripts, chart objects
+    ├── external-communication.md       # WebRequest, JSON, Node.js, sockets
+    ├── backtesting.md                  # Strategy Tester, optimization, Monte Carlo
+    └── security-licensing.md           # Code protection and licensing
+```
+
+Uses progressive disclosure: `SKILL.md` loads first (~140 lines), then only the relevant reference file is loaded based on the task.
+
+## Installation
+
+Copy the skill to your Claude Code skills directory:
+
+```bash
+# Option 1: Clone and copy
+git clone https://github.com/YOUR_USERNAME/mql-developer.git
+cp -r mql-developer ~/.claude/skills/
+
+# Option 2: Direct copy (if already cloned)
+cp -r mql-developer ~/.claude/skills/
+```
+
+The skill activates automatically when Claude detects MQL-related tasks.
+
+## Usage Examples
+
+```
+You: "Create an EA with MA crossover strategy for EURUSD"
+You: "Add risk management with 2% per trade and max 10% daily drawdown"
+You: "Build a custom RSI indicator with color zones"
+You: "Set up WebRequest to send trade notifications to my Node.js server"
+You: "Add account-based licensing to my EA"
+```
+
+## Design Principles
+
+Built following the [skill-creator](https://github.com/anthropics/courses/tree/master/claude-code/09-skills) best practices:
+
+- **SKILL.md under 500 lines** — concise entry point with navigation
+- **Progressive disclosure** — reference files loaded only when needed
+- **No duplication** — language references contain API signatures, specialized files contain production patterns
+- **Table of contents** — all reference files include TOC for quick navigation
+- **Grep patterns** — SKILL.md includes section headers for targeted search in large files
+
+## License
+
+MIT