feat: Initial Docusaurus setup with Stock Market Professional docs

- Set up Docusaurus with pnpm and TypeScript
- Structured docs for multi-application portfolio
- Added Stock Market Professional documentation:
  - Architecture & system design
  - Data monitoring module
  - Technical analysis engine
  - Signal generation with constraints (max 3/day, 30min hold)
- Added platform architecture overview
- Added getting started guide
- Added Gitea Actions CI/CD pipeline (build + artifact)

docs/applications/stock-market-professional/index.md

@@ -0,0 +1,50 @@
+---
+sidebar_position: 1
+---
+
+# Stock Market Professional
+
+> Autonomous stock/forex monitoring, technical analysis, and signal generation system.
+
+## Purpose
+
+Stock Market Professional is designed to:
+
+1. **Monitor** real-time market data (stocks, forex pairs)
+2. **Analyze** price action using technical and statistical methods to spot patterns
+3. **Signal** consumers with daily trading plans
+
+## Trading Strategy Constraints
+
+| Parameter | Value |
+|---|---|
+| Max daily purchases | **3** |
+| Max hold time | **30 minutes** |
+| Execution | **Manual** (signals only — no auto-trading) |
+| Market focus | Forex / Short-term stock positions |
+
+## Architecture Overview
+
+```
+┌─────────────────┐     ┌──────────────────┐     ┌─────────────────┐
+│  Data Ingestion │────▶│  Analysis Engine  │────▶│ Signal Generator│
+│                 │     │                   │     │                 │
+│ • Market feeds  │     │ • Technical ind.  │     │ • Daily plans   │
+│ • Price streams │     │ • Pattern recog.  │     │ • Entry/Exit    │
+│ • Volume data   │     │ • Statistical     │     │ • Risk mgmt     │
+└─────────────────┘     └──────────────────┘     └─────────────────┘
+                                                         │
+                                                         ▼
+                                                  ┌─────────────┐
+                                                  │  Consumers  │
+                                                  │ (Discord/   │
+                                                  │  Webhook)   │
+                                                  └─────────────┘
+```
+
+## Modules
+
+- [Architecture & Design](./overview/architecture)
+- [Data Monitoring](./data-monitoring/)
+- [Technical Analysis](./technical-analysis/)
+- [Signal Generation](./signal-generation/)