Add Hellion fork README, NOTICE, and COPYRIGHT

Initial Hellion Forge documentation for the Craftimizer fork.

- Replace stub README with full project page (badges, fork scope table,
  tech stack, build instructions, project status, license block, FFXIV
  disclaimer, Hellion Forge footer)
- Add NOTICE.md with acknowledgement to Asriel Camora as the upstream
  author, direct word on fork intent, scope of changes, contact path,
  and explicit non-upstreaming rationale
- Add COPYRIGHT with dual-holder source code block (Asriel 2023 +
  Hellion Online Media 2026 for the SDK 15 maintenance), visual asset
  block (Hellion Forge logo by Florian Eck, all-rights-reserved), and
  bundled binary attribution (Raphael solver)
- Drop in the Hellion Forge logo under docs/images/

LICENSE remains unchanged — Asriel Camora's original MIT notice is
mandatory under MIT clause 3.

COPYRIGHT

@@ -0,0 +1,53 @@
+Craftimizer — Hellion fork of the FFXIV crafting plugin by Asriel Camora
+
+═══════════════════════════════════════════════════════════════════
+Source code
+═══════════════════════════════════════════════════════════════════
+
+Copyright (c) 2023 Asriel Camora
+  Original author of Craftimizer (https://github.com/WorkingRobot/Craftimizer).
+  The entire architecture, simulator, solver, recipe data layer,
+  synthesis hooks, macro engine, and every UI window are Asriel's
+  work. This fork would not exist without it.
+
+Copyright (c) 2026 Hellion Online Media
+  Hellion fork maintenance: Dalamud SDK 14 → 15 migration for the
+  FFXIV 7.5 / Dalamud API 15 cycle. Scope: the ValueType → AtkValueType
+  rename in FFXIVClientStructs, the local IEndObject interface that
+  replaces the removed Dalamud ImRaii.IEndObject, the typed ImRaii
+  disposable returns (TabItemDisposable, ColorDisposable), and the
+  ImRaii.TabItem ref-bool lifetime fix. No functional changes.
+
+Source code is licensed under the MIT License. The full Licence text
+lives in the LICENSE file at the root of this repository.
+
+═══════════════════════════════════════════════════════════════════
+Visual assets
+═══════════════════════════════════════════════════════════════════
+
+Copyright (c) 2026 Florian Eck
+  Designer of the Hellion Forge logo (docs/images/hellion-forge.png).
+  Exclusive usage and marketing rights licensed to Hellion Online
+  Media. This asset is NOT covered by the MIT source code licence
+  above and may not be reused, modified, or redistributed without
+  separate permission from the copyright holder.
+
+Copyright (c) 2023 Asriel Camora
+  Designer of the Craftimizer plugin icon (icon.png), the embedded
+  graphics (Craftimizer/Graphics/*.png), and the documentation
+  screenshots (Images/*.png). Asset reuse follows the MIT Licence
+  above.
+
+═══════════════════════════════════════════════════════════════════
+Bundled binary assets
+═══════════════════════════════════════════════════════════════════
+
+Raphael solver (Craftimizer/raphael_bindings.dll, Raphael.Net.dll)
+  Upstream Rust + .NET binding crate bundled as a pre-built binary
+  by the original Craftimizer build. Licensing follows the upstream
+  Raphael project; see the upstream Craftimizer repository for the
+  attribution chain.
+
+═══════════════════════════════════════════════════════════════════
+
+Acknowledgements directed at the upstream author live in NOTICE.md.