Part O

backend/.env.example

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+# Filehost configuration (Rust backend).
+# Copy to .env (at the project root) and edit as needed.
+
+# Bind address and port.
+HOST=0.0.0.0
+PORT=3000
+
+# Directory where files + metadata are stored.
+STORAGE_DIR=./storage
+
+# Directory containing the built Svelte frontend (vite build output).
+STATIC_DIR=./frontend/dist
+
+# Max upload size. Units: B, KB, MB, GB, TB (or plain bytes).
+MAX_FILE_SIZE=10GB
+
+# Max fraction (0.0-1.0) of the storage disk that may be used; uploads are
+# rejected with 503 above this.
+MAX_STORAGE_USAGE=0.5
+
+# Milliseconds before an upload expires and is deleted (48 hours hard maximum).
+FILE_TTL_MS=172800000
+
+# Length in characters of the upload/download key token (a-z0-9).
+KEY_LENGTH=8
+
+# Optional public base URL used to build absolute share links.
+# PUBLIC_BASE_URL=https://files.example.com
+
+# Enable per-IP rate limiting on download/delete/auth endpoints.
+RATE_LIMIT_ENABLED=1
+RATE_LIMIT_MAX=300
+RATE_LIMIT_WINDOW_MS=60000
+
+# Set 1 only behind a proxy that sets X-Forwarded-For.
+TRUST_PROXY=0