feat: initial MALS implementation — Phase 1

.env.example

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+# =============================================================================
+# MALS — Mosaic Agent Log System — Environment Configuration
+# Copy this file to .env and fill in the required values.
+# =============================================================================
+
+# --- Required ---
+
+# PostgreSQL password (no default — must be set)
+POSTGRES_PASSWORD=change-me-in-production
+
+# API bearer token — all clients must send: Authorization: Bearer <MALS_API_KEY>
+MALS_API_KEY=change-me-in-production
+
+# --- Optional (defaults shown) ---
+
+# Database name and user
+POSTGRES_DB=mals
+POSTGRES_USER=mals
+
+# Port the PostgreSQL container exposes on the host
+PG_PORT=5434
+
+# Port the API container exposes on the host
+MALS_PORT=8421
+
+# Log verbosity: DEBUG | INFO | WARNING | ERROR | CRITICAL
+LOG_LEVEL=INFO
+
+# For Portainer/Swarm only: your domain and Docker image tag
+# MALS_DOMAIN=mals.yourdomain.com
+# MALS_IMAGE=registry.yourdomain.com/mals:latest