Add Modrinth release pipeline and clean up multi-module build

.github/workflows/publish.yml

@@ -0,0 +1,56 @@
+name: Publish to Modrinth
+
+on:
+  release:
+    types:
+      - published
+
+permissions:
+  contents: read
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Set up JDK
+        uses: actions/setup-java@v4
+        with:
+          distribution: temurin
+          java-version: 25
+
+      - name: Determine previous release tag
+        id: prev_tag
+        run: |
+          PREV=$(git describe --tags --abbrev=0 "${{ github.event.release.tag_name }}^" 2>/dev/null || true)
+          echo "tag=$PREV" >> "$GITHUB_OUTPUT"
+
+      - name: Detect changed modules
+        if: steps.prev_tag.outputs.tag != ''
+        id: filter
+        uses: dorny/paths-filter@v3
+        with:
+          base: ${{ steps.prev_tag.outputs.tag }}
+          filters: |
+            paper:
+              - 'paper/**'
+              - 'common/**'
+              - 'api/**'
+              - 'gradle/libs.versions.toml'
+              - 'build.gradle.kts'
+              - 'settings.gradle.kts'
+
+      - name: Build all modules
+        run: ./gradlew build
+
+      - name: Publish Paper
+        if: steps.prev_tag.outputs.tag == '' || steps.filter.outputs.paper == 'true'
+        env:
+          MODRINTH_TOKEN: ${{ secrets.MODRINTH_TOKEN }}
+          CHANGELOG: ${{ github.event.release.body }}
+        run: ./gradlew :paper:modrinth

.github/workflows/version-check.yml

@@ -0,0 +1,73 @@
+name: Verify version
+
+on:
+  pull_request:
+    branches:
+      - master
+
+permissions:
+  contents: read
+
+jobs:
+  version-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Extract versions
+        id: versions
+        run: |
+          set -euo pipefail
+          extract() {
+            grep -E '^[[:space:]]*version[[:space:]]*=' "$1" | head -1 \
+              | sed -E 's/.*"([^"]+)".*/\1/'
+          }
+
+          PR_VERSION=$(extract build.gradle.kts)
+          if [ -z "$PR_VERSION" ]; then
+            echo "::error file=build.gradle.kts::Could not extract version from build.gradle.kts on PR branch."
+            exit 1
+          fi
+
+          BASE_FILE=$(git show "origin/${{ github.base_ref }}:build.gradle.kts")
+          BASE_VERSION=$(echo "$BASE_FILE" | grep -E '^[[:space:]]*version[[:space:]]*=' | head -1 \
+            | sed -E 's/.*"([^"]+)".*/\1/')
+          if [ -z "$BASE_VERSION" ]; then
+            echo "::error::Could not extract version from build.gradle.kts on origin/${{ github.base_ref }}."
+            exit 1
+          fi
+
+          echo "pr=$PR_VERSION"   >> "$GITHUB_OUTPUT"
+          echo "base=$BASE_VERSION" >> "$GITHUB_OUTPUT"
+          echo "PR:   $PR_VERSION"
+          echo "Base: $BASE_VERSION"
+
+      - name: Reject 'dev' in version
+        run: |
+          PR='${{ steps.versions.outputs.pr }}'
+          if echo "$PR" | grep -qi 'dev'; then
+            echo "::error file=build.gradle.kts::Version '$PR' contains 'dev' — must not be merged."
+            exit 1
+          fi
+
+      - name: Verify version is not lower
+        run: |
+          set -euo pipefail
+          PR='${{ steps.versions.outputs.pr }}'
+          BASE='${{ steps.versions.outputs.base }}'
+
+          if [ "$PR" = "$BASE" ]; then
+            echo "Version unchanged ($BASE) — OK."
+            exit 0
+          fi
+
+          LOWER=$(printf '%s\n%s\n' "$PR" "$BASE" | sort -V | head -1)
+          if [ "$LOWER" != "$BASE" ]; then
+            echo "::error file=build.gradle.kts::PR version ($PR) is lower than base version ($BASE). Version must only go up."
+            exit 1
+          fi
+
+          echo "PR version $PR > base version $BASE — OK."

api/build.gradle.kts

@@ -1,20 +1,24 @@
 /*
- * Copyright (c) 2026 Seedim
- * This file is part of Custom Daytime, which is licensed under GPL-3.0.
- * See the LICENSE file in the project root for full license text.
+ *     Copyright (c) 2026 Seedim
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 plugins {
     id("java")
 }
 
-group = "xyz.mayahive.customdaytime"
-version = "2.0.0-SNAPSHOT"
-
-repositories {
-    mavenCentral()
-}
-
 val javaTarget = 21 // Sponge targets a minimum of Java 21
 java {
     toolchain.languageVersion.set(JavaLanguageVersion.of(javaTarget))

api/src/main/java/xyz/mayahive/customdaytime/api/CustomDaytime.java

@@ -1,7 +1,18 @@
 /*
- * Copyright (c) 2026 Seedim
- * This file is part of Custom Daytime, which is licensed under GPL-3.0.
- * See the LICENSE file in the project root for full license text.
+ *     Copyright (c) 2026 Seedim
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package xyz.mayahive.customdaytime.api;

api/src/main/java/xyz/mayahive/customdaytime/api/model/PlatformType.java

@@ -1,7 +1,18 @@
 /*
- * Copyright (c) 2026 Seedim
- * This file is part of Custom Daytime, which is licensed under GPL-3.0.
- * See the LICENSE file in the project root for full license text.
+ *     Copyright (c) 2026 Seedim
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package xyz.mayahive.customdaytime.api.model;

api/src/main/java/xyz/mayahive/customdaytime/api/model/WorldKey.java

@@ -1,7 +1,18 @@
 /*
- * Copyright (c) 2026 Seedim
- * This file is part of Custom Daytime, which is licensed under GPL-3.0.
- * See the LICENSE file in the project root for full license text.
+ *     Copyright (c) 2026 Seedim
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package xyz.mayahive.customdaytime.api.model;

api/src/main/java/xyz/mayahive/customdaytime/api/platform/Platform.java

@@ -1,7 +1,18 @@
 /*
- * Copyright (c) 2026 Seedim
- * This file is part of Custom Daytime, which is licensed under GPL-3.0.
- * See the LICENSE file in the project root for full license text.
+ *     Copyright (c) 2026 Seedim
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package xyz.mayahive.customdaytime.api.platform;

api/src/main/java/xyz/mayahive/customdaytime/api/platform/PlatformLogger.java

@@ -1,7 +1,18 @@
 /*
- * Copyright (c) 2026 Seedim
- * This file is part of Custom Daytime, which is licensed under GPL-3.0.
- * See the LICENSE file in the project root for full license text.
+ *     Copyright (c) 2026 Seedim
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package xyz.mayahive.customdaytime.api.platform;

api/src/main/java/xyz/mayahive/customdaytime/api/platform/PlatformScheduler.java

@@ -1,7 +1,18 @@
 /*
- * Copyright (c) 2026 Seedim
- * This file is part of Custom Daytime, which is licensed under GPL-3.0.
- * See the LICENSE file in the project root for full license text.
+ *     Copyright (c) 2026 Seedim
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package xyz.mayahive.customdaytime.api.platform;

api/src/main/java/xyz/mayahive/customdaytime/api/platform/PlatformTask.java

@@ -1,7 +1,18 @@
 /*
- * Copyright (c) 2026 Seedim
- * This file is part of Custom Daytime, which is licensed under GPL-3.0.
- * See the LICENSE file in the project root for full license text.
+ *     Copyright (c) 2026 Seedim
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package xyz.mayahive.customdaytime.api.platform;

api/src/main/java/xyz/mayahive/customdaytime/api/platform/PlatformWorld.java

@@ -1,7 +1,18 @@
 /*
- * Copyright (c) 2026 Seedim
- * This file is part of Custom Daytime, which is licensed under GPL-3.0.
- * See the LICENSE file in the project root for full license text.
+ *     Copyright (c) 2026 Seedim
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 package xyz.mayahive.customdaytime.api.platform;

build.gradle.kts

@@ -1,18 +1,24 @@
 /*
- * Copyright (c) 2026 Seedim
- * This file is part of Custom Daytime, which is licensed under GPL-3.0.
- * See the LICENSE file in the project root for full license text.
+ *     Copyright (c) 2026 Seedim
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 subprojects {
 
     group = "xyz.mayahive.customdaytime"
-    version = "2.1.0"
-
-    repositories {
-        mavenCentral()
-        maven("https://repo.papermc.io/repository/maven-public/")
-    }
+    version = "2.1.1"
 
     if (name != "api") {
         plugins.withId("java") {