License NETfishing code and define asset terms

THIRD-PARTY-NOTICES.md

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+# NETfishing third-party notices
+
+NETfishing includes or is distributed with the materials identified below.
+They are not relicensed by the NETfishing GPL or Asset License; their own
+terms continue to apply.
+
+## Godot Engine
+
+NETfishing uses Godot Engine. Godot Engine is licensed under the MIT License:
+
+> Copyright (c) 2014-present Godot Engine contributors.
+> Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.
+>
+> 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 and this permission notice 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.
+
+Godot Engine and its bundled third-party-component notices are documented at:
+
+- https://godotengine.org/license/
+- https://github.com/godotengine/godot/blob/master/COPYRIGHT.txt
+
+Godot uses FreeType for font rendering. Portions of the engine are copyright
+The FreeType Project (https://www.freetype.org). All rights reserved under the
+FreeType Project’s applicable license.
+
+## Fonts
+
+### Tuffy Bold
+
+- Creators: Thatcher Ulrich, Karoly Barta, and Michael Evans
+- Repository file: `ui/fonts/Tuffy_Bold.otf`
+- Status: dedicated to the public domain
+- Bundled notice: `ui/fonts/Tuffy-LICENSE.txt`
+
+### Seattle Avenue
+
+- Creator: JLH Fonts
+- Repository file: `ui/fonts/seattle_avenue.otf`
+- Status: dedicated to the public domain by the creator
+- Source record:
+  https://www.publicdomainfiles.com/show_file.php?id=13486266913972
+- Additional creator attribution and public-domain listing:
+  https://www.dafont.com/seattle-avenue.font
+- Bundled notice: `ui/fonts/Seattle-Avenue-LICENSE.txt`
+
+Public-domain status means these fonts are not subject to the NETfishing Asset
+License.
+
+## Sound recordings
+
+### Spinning Reel
+
+- Original title: “Spinning reel.wav”
+- Creator: Freesound user `tosha73`
+- Source: https://freesound.org/s/509902/
+- License: Creative Commons Zero (CC0)
+- Used for: `audio/sfx/fishing/fighting.wav` and
+  `audio/sfx/fishing/reeling.wav`
+- Changes: edited into separate looping fight and manual-reeling sounds;
+  converted/exported as runtime WAV files
+
+CC0 information: https://creativecommons.org/publicdomain/zero/1.0/
+
+### Gentle Ocean Waves Loop
+
+- Original title: “Gentle Ocean Waves Loop”
+- Creator: Freesound user `kkenny101`
+- Source: https://freesound.org/s/852826/
+- License: Creative Commons Zero (CC0)
+- Used for: `audio/ambience/waves.wav`
+- Changes: configured as a quiet looping saltwater ambience
+
+### Quick Water Droplet
+
+- Original title: “Quick Water Droplet”
+- Creator: Freesound user `qubodup`
+- Source: https://freesound.org/s/792931/
+- License: Creative Commons Zero (CC0)
+- Used for: `audio/sfx/fishing/bobber.wav`
+- Changes: used as the bobber water-impact sound
+
+### Dog Bark
+
+- Original title: “Dog_Bark.wav”
+- Creator: Freesound user `ivolipa`
+- Source: https://freesound.org/s/328729/
+- License: Creative Commons Zero (CC0)
+- Used for: `sound/dialogue/calls/bark.wav`
+- Changes: edited and exported as a short in-game character-call sound
+
+### Rain Loop Ontario
+
+- Original title: “Rain Loop Ontario”
+- Creator: Freesound user `Ayton`
+- Source: https://freesound.org/s/212799/
+- License: Creative Commons Attribution 3.0
+- License text: https://creativecommons.org/licenses/by/3.0/legalcode
+- Used for: `audio/ambience/rain_loop_ontario.ogg`
+- Changes: converted from the supplied AIFF source to Ogg Vorbis and configured
+  as looping weather ambience
+
+### Cat Meow
+
+- Original title: “Cat meow.m4a”
+- Creator: Freesound user `Christyboy100`
+- Source: https://freesound.org/s/495694/
+- License: Creative Commons Attribution 3.0
+- License text: https://creativecommons.org/licenses/by/3.0/legalcode
+- Used for: `sound/dialogue/calls/meow.wav`
+- Changes: converted to WAV and edited into a short in-game character-call
+  sound
+
+The attribution above does not imply that any third-party creator endorses
+NETfishing, Woofmeow, Alexander Sellite, or Rheannon Eisworth.
+
+## Complete provenance records
+
+Source filenames, transformations, and available SHA-256 records are kept in
+`docs/ASSET-PROVENANCE.md`. Absence from that development record does not
+remove an applicable third-party license or attribution requirement.