Update sync-ai-config.yml to use environment variables for improved configurability

- Replace inline AI configuration values with environment and repository variables.
- Add support for `AI_PROJECT_MARKDOWN_FILE`.

Author: darthsharp

.github/workflows/sync-ai-config.yml

@@ -21,22 +21,29 @@ on:
   schedule:
     - cron: '0 0 * * *' # Every day at midnight
 
+env:
+  AI_LANGUAGES: 'csharp,superpowers'
+  AI_SYSTEMS: 'copilot,claude,junie'
+  AI_PROJECT_MARKDOWN_FILE: ''
+
 jobs:
   sync-scheduled:
     if: github.event_name == 'schedule'
     uses: CreativeCodersTeam/ai-base/.github/workflows/sync-ai-config.yml@main
     with:
-      languages: 'csharp'
-      ai-systems: 'copilot,claude,junie'
+      languages: ${{ vars.AI_LANGUAGES || env.AI_LANGUAGES }}
+      ai-systems: ${{ vars.AI_SYSTEMS || env.AI_SYSTEMS }}
+      project-markdown-file: ${{ vars.AI_PROJECT_MARKDOWN_FILE || env.AI_PROJECT_MARKDOWN_FILE }}
       ai-base-version: 'main'
       create-pull-request: true
 
   sync-manual:
     if: github.event_name == 'workflow_dispatch'
     uses: CreativeCodersTeam/ai-base/.github/workflows/sync-ai-config.yml@main
     with:
-      languages: 'csharp'
-      ai-systems: 'copilot,claude,junie'
+      languages: ${{ vars.AI_LANGUAGES || env.AI_LANGUAGES }}
+      ai-systems: ${{ vars.AI_SYSTEMS || env.AI_SYSTEMS }}
+      project-markdown-file: ${{ vars.AI_PROJECT_MARKDOWN_FILE || env.AI_PROJECT_MARKDOWN_FILE }}
       ai-base-version: ${{ inputs.ai-base-version }}
       create-pull-request: ${{ inputs.create-pull-request }}
       clear-ai-configs: ${{ inputs.clear-ai-configs }}