Licensing: standard LICENSE files, NOTICE, ArtCraft brand terms

- LICENSE-MIT / LICENSE-APACHE from the Crafting Apps standard (copyright "ArtCraft Team and the
  FilmCraft contributors"; Apache text in the canonical apache.org layout)
- NOTICE (new): license, brand carve-out, third-party list from ATTRIBUTION.md
- docs/brand/LICENSE-brand.txt (new): ArtCraft brand terms; brand sidecars, ATTRIBUTION.md and
  AGENTS.md §1.8 point to it (owner "ArtCraft Team"; forks and modified versions remove the marks)
- README: "## License and credits" section per the standard (absorbs "Credits and clean room"),
  badge anchor #license-and-credits, alt text "License: MIT OR Apache-2.0"

Co-Authored-By: Claude Opus 5.5 <[email protected]>

NOTICE

@@ -0,0 +1,18 @@
+FilmCraft
+Copyright (c) 2026 ArtCraft Team and the FilmCraft contributors.
+Licensed under the MIT License or the Apache License, Version 2.0, at your option
+(LICENSE-MIT, LICENSE-APACHE).
+
+The ArtCraft name, wordmark and logos in docs/brand/ are trademarks of the ArtCraft Team. They are
+not open source and are not covered by the license above; their terms are in
+docs/brand/LICENSE-brand.txt.
+
+Third-party material
+
+This product bundles third-party material under its own licenses, listed below. The per-file
+list (author, source, license) is in ATTRIBUTION.md.
+
+Inter font (assets/fonts/Inter-*.ttf) — OFL-1.1. See assets/fonts/OFL-Inter.txt.
+Noto Serif font (assets/fonts/NotoSerif-Regular.ttf) — OFL-1.1. See assets/fonts/OFL-NotoSerif.txt.
+JetBrains Mono font (assets/fonts/JetBrainsMono-Regular.ttf) — OFL-1.1. See assets/fonts/OFL-JetBrainsMono.txt.
+Public-domain film and NASA frames and CC0 music shown in README screenshots (docs/images/) — public domain / CC0-1.0. See ATTRIBUTION.md.