chore: add copyright headers

Make sure we obey the REUSE (https://reuse.software) specification and the
origin, copyright owner, and license of all files are clearly marked.

The whole project is under the EPL-2.0, except for trivial files where copyright
is not applicable that are marked with the CC0-1.0 license. Moreover, code
included from third parties is also available under the respective license.

chore: add CONTRIBUTORS.md

List all authors and supporting organizations in accordance with the REUSE
specification.

23 files changed, 140 insertions, 2 deletions

diff --git a/subprojects/frontend/src/editor/AnimatedButton.tsx b/subprojects/frontend/src/editor/AnimatedButton.tsx
index f75d4617..dbbda618 100644
--- a/subprojects/frontend/src/editor/AnimatedButton.tsx
+++ b/subprojects/frontend/src/editor/AnimatedButton.tsx
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import Box from '@mui/material/Box';
 import Button from '@mui/material/Button';
 import { styled, type SxProps, type Theme } from '@mui/material/styles';
diff --git a/subprojects/frontend/src/editor/ConnectButton.tsx b/subprojects/frontend/src/editor/ConnectButton.tsx
index e2d251f3..eed6fbc7 100644
--- a/subprojects/frontend/src/editor/ConnectButton.tsx
+++ b/subprojects/frontend/src/editor/ConnectButton.tsx
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import CloudIcon from '@mui/icons-material/Cloud';
 import CloudOffIcon from '@mui/icons-material/CloudOff';
 import SyncIcon from '@mui/icons-material/Sync';
diff --git a/subprojects/frontend/src/editor/ConnectionStatusNotification.tsx b/subprojects/frontend/src/editor/ConnectionStatusNotification.tsx
index 9b27f45c..b7b962ab 100644
--- a/subprojects/frontend/src/editor/ConnectionStatusNotification.tsx
+++ b/subprojects/frontend/src/editor/ConnectionStatusNotification.tsx
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import Button from '@mui/material/Button';
 import { observer } from 'mobx-react-lite';
 import { useEffect } from 'react';
diff --git a/subprojects/frontend/src/editor/DiagnosticValue.ts b/subprojects/frontend/src/editor/DiagnosticValue.ts
index b4e0b165..20478262 100644
--- a/subprojects/frontend/src/editor/DiagnosticValue.ts
+++ b/subprojects/frontend/src/editor/DiagnosticValue.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import type { Diagnostic } from '@codemirror/lint';
 import { RangeValue } from '@codemirror/state';
 
diff --git a/subprojects/frontend/src/editor/EditorArea.tsx b/subprojects/frontend/src/editor/EditorArea.tsx
index cfb988b2..905fa2ec 100644
--- a/subprojects/frontend/src/editor/EditorArea.tsx
+++ b/subprojects/frontend/src/editor/EditorArea.tsx
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import Box from '@mui/material/Box';
 import { useTheme } from '@mui/material/styles';
 import { observer } from 'mobx-react-lite';
diff --git a/subprojects/frontend/src/editor/EditorButtons.tsx b/subprojects/frontend/src/editor/EditorButtons.tsx
index 53b06e23..9b187e5c 100644
--- a/subprojects/frontend/src/editor/EditorButtons.tsx
+++ b/subprojects/frontend/src/editor/EditorButtons.tsx
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import type { Diagnostic } from '@codemirror/lint';
 import CheckIcon from '@mui/icons-material/Check';
 import ErrorIcon from '@mui/icons-material/Error';
diff --git a/subprojects/frontend/src/editor/EditorPane.tsx b/subprojects/frontend/src/editor/EditorPane.tsx
index f7f8241a..87f408fe 100644
--- a/subprojects/frontend/src/editor/EditorPane.tsx
+++ b/subprojects/frontend/src/editor/EditorPane.tsx
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import Box from '@mui/material/Box';
 import Skeleton from '@mui/material/Skeleton';
 import Stack from '@mui/material/Stack';
diff --git a/subprojects/frontend/src/editor/EditorStore.ts b/subprojects/frontend/src/editor/EditorStore.ts
index 0a0d885d..b98f085e 100644
--- a/subprojects/frontend/src/editor/EditorStore.ts
+++ b/subprojects/frontend/src/editor/EditorStore.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import type {
   CompletionContext,
   CompletionResult,
diff --git a/subprojects/frontend/src/editor/EditorTheme.ts b/subprojects/frontend/src/editor/EditorTheme.ts
index 01b65a7e..023a8f73 100644
--- a/subprojects/frontend/src/editor/EditorTheme.ts
+++ b/subprojects/frontend/src/editor/EditorTheme.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import errorSVG from '@material-icons/svg/svg/error/baseline.svg?raw';
 import expandMoreSVG from '@material-icons/svg/svg/expand_more/baseline.svg?raw';
 import infoSVG from '@material-icons/svg/svg/info/baseline.svg?raw';
diff --git a/subprojects/frontend/src/editor/GenerateButton.tsx b/subprojects/frontend/src/editor/GenerateButton.tsx
index 2036fc28..3837ef8e 100644
--- a/subprojects/frontend/src/editor/GenerateButton.tsx
+++ b/subprojects/frontend/src/editor/GenerateButton.tsx
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import DangerousOutlinedIcon from '@mui/icons-material/DangerousOutlined';
 import PlayArrowIcon from '@mui/icons-material/PlayArrow';
 import Button from '@mui/material/Button';
diff --git a/subprojects/frontend/src/editor/LintPanelStore.ts b/subprojects/frontend/src/editor/LintPanelStore.ts
index 502f9c59..f81587fa 100644
--- a/subprojects/frontend/src/editor/LintPanelStore.ts
+++ b/subprojects/frontend/src/editor/LintPanelStore.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import { closeLintPanel, openLintPanel } from '@codemirror/lint';
 
 import type EditorStore from './EditorStore';
diff --git a/subprojects/frontend/src/editor/PanelStore.ts b/subprojects/frontend/src/editor/PanelStore.ts
index 4f827280..25ef8b6c 100644
--- a/subprojects/frontend/src/editor/PanelStore.ts
+++ b/subprojects/frontend/src/editor/PanelStore.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import type { Command } from '@codemirror/view';
 import { action, makeObservable, observable } from 'mobx';
 
diff --git a/subprojects/frontend/src/editor/SearchPanel.ts b/subprojects/frontend/src/editor/SearchPanel.ts
index c9df41b7..b63d5eed 100644
--- a/subprojects/frontend/src/editor/SearchPanel.ts
+++ b/subprojects/frontend/src/editor/SearchPanel.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import {
   type EditorView,
   type Panel,
diff --git a/subprojects/frontend/src/editor/SearchPanelPortal.tsx b/subprojects/frontend/src/editor/SearchPanelPortal.tsx
index 5cf1c90e..b4b07c74 100644
--- a/subprojects/frontend/src/editor/SearchPanelPortal.tsx
+++ b/subprojects/frontend/src/editor/SearchPanelPortal.tsx
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import Portal from '@mui/material/Portal';
 import { observer } from 'mobx-react-lite';
 
diff --git a/subprojects/frontend/src/editor/SearchPanelStore.ts b/subprojects/frontend/src/editor/SearchPanelStore.ts
index 65d595a8..6a97baf1 100644
--- a/subprojects/frontend/src/editor/SearchPanelStore.ts
+++ b/subprojects/frontend/src/editor/SearchPanelStore.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import {
   closeSearchPanel,
   findNext,
diff --git a/subprojects/frontend/src/editor/SearchToolbar.tsx b/subprojects/frontend/src/editor/SearchToolbar.tsx
index 54f3dba7..4ae7e893 100644
--- a/subprojects/frontend/src/editor/SearchToolbar.tsx
+++ b/subprojects/frontend/src/editor/SearchToolbar.tsx
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import CloseIcon from '@mui/icons-material/Close';
 import FindReplaceIcon from '@mui/icons-material/FindReplace';
 import KeyboardArrowDownIcon from '@mui/icons-material/KeyboardArrowDown';
diff --git a/subprojects/frontend/src/editor/createEditorState.ts b/subprojects/frontend/src/editor/createEditorState.ts
index ce1efa4f..4a8e9832 100644
--- a/subprojects/frontend/src/editor/createEditorState.ts
+++ b/subprojects/frontend/src/editor/createEditorState.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import {
   closeBrackets,
   closeBracketsKeymap,
diff --git a/subprojects/frontend/src/editor/defineDecorationSetExtension.ts b/subprojects/frontend/src/editor/defineDecorationSetExtension.ts
index d9c7bc7d..0887c92e 100644
--- a/subprojects/frontend/src/editor/defineDecorationSetExtension.ts
+++ b/subprojects/frontend/src/editor/defineDecorationSetExtension.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import { StateEffect, StateField, TransactionSpec } from '@codemirror/state';
 import { EditorView, Decoration, DecorationSet } from '@codemirror/view';
 
diff --git a/subprojects/frontend/src/editor/exposeDiagnostics.ts b/subprojects/frontend/src/editor/exposeDiagnostics.ts
index 82f24c93..c4dcbb87 100644
--- a/subprojects/frontend/src/editor/exposeDiagnostics.ts
+++ b/subprojects/frontend/src/editor/exposeDiagnostics.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import { setDiagnosticsEffect } from '@codemirror/lint';
 import {
   StateField,
diff --git a/subprojects/frontend/src/editor/findOccurrences.ts b/subprojects/frontend/src/editor/findOccurrences.ts
index 08c078c2..00dffc96 100644
--- a/subprojects/frontend/src/editor/findOccurrences.ts
+++ b/subprojects/frontend/src/editor/findOccurrences.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import {
   type Range,
   RangeSet,
diff --git a/subprojects/frontend/src/editor/indentationMarkerViewPlugin.ts b/subprojects/frontend/src/editor/indentationMarkerViewPlugin.ts
index 730fa6e3..57a946d5 100644
--- a/subprojects/frontend/src/editor/indentationMarkerViewPlugin.ts
+++ b/subprojects/frontend/src/editor/indentationMarkerViewPlugin.ts
@@ -1,10 +1,16 @@
+/*
+ * Copyright (c) 2022 Replit
+ * Copyright (c) 2022-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: MIT OR EPL-2.0
+ */
+
 /**
  * @file CodeMirror plugin to highlight indentation
  *
  * This file is based on the
  * [@replit/codemirror-indentation-markers](https://github.com/replit/codemirror-indentation-markers)
- * package, which is available under the
- * [MIT License](https://github.com/replit/codemirror-indentation-markers/blob/543cc508ca5cef5d8350af23973eb1425e31525c/LICENSE).
+ * package.
  *
  * The highlighting heuristics were adjusted to make them more suitable
  * for logic programming.
diff --git a/subprojects/frontend/src/editor/scrollbarViewPlugin.ts b/subprojects/frontend/src/editor/scrollbarViewPlugin.ts
index f44034fd..878d369d 100644
--- a/subprojects/frontend/src/editor/scrollbarViewPlugin.ts
+++ b/subprojects/frontend/src/editor/scrollbarViewPlugin.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import { EditorSelection } from '@codemirror/state';
 import {
   type EditorView,
diff --git a/subprojects/frontend/src/editor/semanticHighlighting.ts b/subprojects/frontend/src/editor/semanticHighlighting.ts
index 2c1bd67d..1f2e564c 100644
--- a/subprojects/frontend/src/editor/semanticHighlighting.ts
+++ b/subprojects/frontend/src/editor/semanticHighlighting.ts
@@ -1,3 +1,9 @@
+/*
+ * SPDX-FileCopyrightText: 2021-2023 The Refinery Authors <https://refinery.tools/>
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ */
+
 import { RangeSet, type TransactionSpec } from '@codemirror/state';
 import { Decoration } from '@codemirror/view';