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  VAULT OPUS — TERMS OF SERVICE & PRIVACY POLICY
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Version 1-R10 | Effective Date: 2026

Welcome to VAULT OPUS, an open-source, self-hosted cloud storage
system created by WeDu. By using this software, you agree to the
following terms. If you do not agree, do not use the application.

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1. ACCEPTANCE OF TERMS
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By downloading, installing, accessing, or using VAULT OPUS in any
form (Desktop Client, Mobile Web Interface, CLI, or Android
Application), you acknowledge that you have read, understood, and
agree to be bound by these Terms of Service and Privacy Policy.

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2. NATURE OF THE SOFTWARE
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• Open Source: VAULT OPUS is released under the MIT License. You
  are free to use, modify, merge, publish, distribute, sublicense,
  and/or sell copies, provided the copyright notice is included.
• Self-Hosted: VAULT OPUS runs entirely on your own infrastructure.
  There are no centralized servers operated by WeDu.
• No Accounts: VAULT OPUS does not require you to create an account,
  provide personal information, or register with any WeDu service.

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3. DISCORD INTEGRATION & THIRD-PARTY COMPLIANCE
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• Discord as Storage Backend: VAULT OPUS uses Discord's platform as
  a file storage backend by uploading encrypted file chunks to
  Discord channels via your personal Discord Bot Token.
• Your Responsibility: You are solely responsible for ensuring your
  use complies with Discord's Terms of Service
  (https://discord.com/terms) and Community Guidelines.
• Risk of Account Action: Discord may suspend, terminate, or restrict
  your account or bot if your usage violates their terms. This
  includes excessive API usage, storage abuse, or uploading
  prohibited content. WeDu bears NO liability for such actions.
• Bot Token Security: Your Bot Token is stored locally in config.json.
  Never share this token. If compromised, regenerate it immediately
  via the Discord Developer Portal.

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4. DATA PRIVACY & NO DATA COLLECTION
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• Zero Telemetry: VAULT OPUS collects absolutely NO usage data,
  analytics, telemetry, crash reports, or personal information.
• Local-Only Operation: All config files, databases, encryption keys,
  and volume configs are stored exclusively on your local filesystem.
  WeDu never has access to any of your data.
• No Network Calls to WeDu: The only external network communication
  is between your machine and the Discord API, initiated by your
  own Bot Token.

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5. ENCRYPTION & SECURITY
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• Encryption Architecture: Two-layer system using Argon2id
  (memory-hard key derivation) + HKDF-SHA256, producing Fernet
  (AES-128-CBC + HMAC-SHA256) encrypted data.
• Per-Volume Encryption: Each volume has its own unique cryptographic
  salt. Keys are derived from your seed + volume-specific salt.
• Your Keys, Your Responsibility: WeDu does NOT store, manage, or
  have access to your encryption seeds, keys, or passwords. If you
  lose your encryption seed or volume config, YOUR DATA IS
  IRRECOVERABLE. No recovery mechanism, no master key, no backdoor.
• No Warranty on Security: The software is provided without warranty
  regarding the absolute security of your data.

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6. VOLUME SHARING & PACKAGES
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• Volume Packages (.vov): You can export volumes for sharing. These
  packages contain your database and encryption configuration.
• Password-Protected (.e.vov): Optionally protect packages with
  AES-256 encryption. Unprotected packages expose your volume data
  and encryption config to anyone who receives the file.
• Sharing Risks: Recipients gain FULL access to the volume data,
  including encryption keys. Only share with trusted parties.

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7. DATA LOSS & LIABILITY
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• No Guarantee: VAULT OPUS is provided "AS IS" without warranty.
  WeDu makes NO guarantees about data integrity or availability.
• Causes of Data Loss May Include:
  - Discord API changes, outages, or account suspensions
  - Corruption of local SQLite databases or volume config files
  - Loss or misconfiguration of encryption seeds/keys
  - Software bugs, hardware failures, or power loss during uploads
  - Accidental deletion of volumes, chunks, or config files
• No Recovery Service: WeDu does NOT offer data recovery. You are
  solely responsible for maintaining backups.
• Limitation of Liability: WeDu and its contributors shall NOT be
  liable for any direct, indirect, incidental, special, or
  consequential damages arising from use of this software.

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8. PROHIBITED USES
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You agree NOT to use VAULT OPUS to:
  - Store or distribute illegal content (including CSAM, malware,
    ransomware, or stolen data)
  - Distribute copyrighted material without authorization
  - Abuse Discord infrastructure (excessive requests, rate limit
    circumvention, storage exploitation)
  - Harass, threaten, or harm any individual or group
  - Circumvent security measures of Discord or third-party services
  - Violate any applicable local, national, or international law

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9. SOFTWARE UPDATES & CHANGES
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• No Automatic Updates: You choose when to update.
• Breaking Changes: Future versions may change database schemas,
  encryption methods, or file formats. Always backup before updating.
• Terms Updates: We may modify these Terms at any time. Continued
  use after updating constitutes acceptance of revised terms.

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10. OPEN SOURCE LICENSE (MIT)
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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11. CONTACT
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• GitHub: https://github.com/WeDu-official
• Project: VAULT OPUS (WeDu)
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