chore(release): add LICENSE and root .env.example for BYOK packaging

Co-Authored-By: BotTony329 <[email protected]>

.env.example

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+# ─── Required deployment secret ─────────────────────────────────────────────
+# Encrypts user-provided AI provider credentials (BYOK) into HttpOnly session
+# cookies. It does NOT contain any AI API key itself. Generate a long random
+# string, e.g.: openssl rand -base64 32
+APP_ENCRYPTION_KEY=
+
+# ─── Persistent object storage for generated/uploaded images ────────────────
+# On Vercel: create a Blob store and this token is injected automatically.
+# Locally without a token, files fall back to ./.data (dev only).
+BLOB_READ_WRITE_TOKEN=
+
+# ─── Optional deployment-default providers ──────────────────────────────────
+# Users normally connect their own providers in-app via AI Settings (BYOK).
+# These env vars are an OPTIONAL operator fallback used only when a user has
+# no session configuration of their own. User BYOK settings always win.
+
+# Image generation fallback: "gemini" | "generic-rest"
+# IMAGE_PROVIDER=gemini
+# GEMINI_API_KEY=
+# IMAGE_MODEL=gemini-2.5-flash-image
+# IMAGE_API_BASE_URL=
+# IMAGE_API_KEY=
+
+# Background-removal fallback (users can instead configure this in AI Settings)
+# BACKGROUND_REMOVAL_PROVIDER=remove-bg
+# BACKGROUND_REMOVAL_API_KEY=
+# BACKGROUND_REMOVAL_API_BASE_URL=https://api.remove.bg/v1.0/removebg
+# BACKGROUND_REMOVAL_MODEL=background-removal
+
+# Manga Agent LLM fallback (OpenAI-compatible; defaults target DeepSeek)
+# AGENT_API_KEY=
+# AGENT_API_BASE_URL=https://api.deepseek.com
+# AGENT_MODEL=deepseek-chat
+
+# ─── Development only ───────────────────────────────────────────────────────
+# Set to "1" to allow private-network provider URLs (localhost model servers
+# like Ollama/LM Studio) in local development. Never set in production —
+# hosted serverless can't reach your localhost anyway, and allowing private
+# ranges there would open SSRF.
+# ALLOW_PRIVATE_NETWORKS=1

LICENSE

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+MIT License
+
+Copyright (c) 2026 BotTony329 (https://github.com/BotTony329)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice, this permission notice and the attribution in
+NOTICE.md shall be included in all copies or substantial portions of the
+Software.
+
+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.