Initial commit: Vera-AI v2 with async Qdrant, singleton pattern, monthly curation, and configurable UID/GID/TZ

Features:
- AsyncQdrantClient for non-blocking Qdrant operations
- Singleton pattern for QdrantService
- Monthly full curation (day 1 at 03:00)
- Configurable UID/GID for Docker
- Timezone support via TZ env var
- Configurable log directory (VERA_LOG_DIR)
- Volume mounts for config/, prompts/, logs/
- Standard Docker format with .env file

Fixes:
- Removed unused system_token_budget
- Added semantic_score_threshold config
- Fixed streaming response handling
- Python-based healthcheck (no curl dependency)

.env.example

@@ -0,0 +1,31 @@
+# Vera-AI Environment Configuration
+# Copy this file to .env and customize for your deployment
+
+# =============================================================================
+# User/Group Configuration
+# =============================================================================
+# UID and GID for the container user (must match host user for volume permissions)
+# Run: id -u and id -g on your host to get these values
+APP_UID=1000
+APP_GID=1000
+
+# =============================================================================
+# Timezone Configuration
+# =============================================================================
+# Timezone for the container (affects scheduler times)
+# Common values: UTC, America/New_York, America/Chicago, America/Los_Angeles, Europe/London
+TZ=America/Chicago
+
+# =============================================================================
+# API Keys (Optional)
+# =============================================================================
+# OpenRouter API key for cloud model routing
+# OPENROUTER_API_KEY=your_api_key_here
+
+# =============================================================================
+# Vera-AI Configuration Paths (Optional)
+# =============================================================================
+# These can be overridden via environment variables
+# VERA_CONFIG_DIR=/app/config
+# VERA_PROMPTS_DIR=/app/prompts
+# VERA_STATIC_DIR=/app/static