Fix CI workflows: align build-plugin.yml with kotlin-ci.yml and add path filtering

[Copilot]

The release workflow (build-plugin.yml) was failing to build the plugin due to incorrect artifact paths and missing build infrastructure setup. Additionally, kotlin-ci.yml was running on all commits, wasting CI resources.

Changes

build-plugin.yml (release workflow)

• Fix artifact paths: plugin/build/distributions/*.zip → ide-plugins/build/distributions/*.zip
• Add Gradle wrapper setup step (matches kotlin-ci.yml approach)
• Add Gradle caching with consistent cache keys
• Use working-directory: ide-plugins throughout
• Update actions to v4 (checkout, setup-java, cache, upload-artifact)
• Add permissions: contents: write for release uploads

kotlin-ci.yml (PR/push workflow)

• Add paths: ['ide-plugins/**'] filter to pull_request and push triggers
• Workflow now only runs when ide-plugins files change

Example

# Before: runs on all commits
on:
  pull_request:
    types: [opened, synchronize, reopened]
  push:
    branches: [ "main" ]

# After: only runs when ide-plugins files change
on:
  pull_request:
    types: [opened, synchronize, reopened]
    paths:
      - 'ide-plugins/**'
  push:
    branches: [ "main" ]
    paths:
      - 'ide-plugins/**'

Original prompt

when releasing a new version the plugin is not build as the ci is not aligned with the kotlin-ci.yml file
also kotlin-ci should be executed only if the ide-plugins file are changed in the commit

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.