Add Activepieces integration for workflow automation

- Add Activepieces fork with SmoothSchedule custom piece
- Create integrations app with Activepieces service layer
- Add embed token endpoint for iframe integration
- Create Automations page with embedded workflow builder
- Add sidebar visibility fix for embed mode
- Add list inactive customers endpoint to Public API
- Include SmoothSchedule triggers: event created/updated/cancelled
- Include SmoothSchedule actions: create/update/cancel events, list resources/services/customers

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

activepieces-fork/docs/about/i18n.mdx

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+---
+title: "i18n Translations"
+description: ""
+icon: "language"
+---
+
+
+This guide helps you understand how to change or add new translations.
+
+Activepieces uses Crowdin because it helps translators who don't know how to code. It also makes the approval process easier. Activepieces automatically sync new text from the code and translations back into the code.
+
+## Contribute to existing translations
+
+1. Create Crowdin account
+2. Join the project https://crowdin.com/project/activepieces
+
+![Join Project](/resources/crowdin.png)
+
+3. Click on the language you want to translate
+
+4. Click on "Translate All"
+
+![Translate All](/resources/crowdin-translate-all.png)
+
+5. Select Strings you want to translate and click on "Save" button
+
+
+## Adding a new language
+- Please contact us (support@activepieces.com) if you want to add a new language. We will add it to the project and you can start translating.