AI Engine Pro 3.4.6

* Add: Introduce a Streamable HTTP transport for MCP so Claude Code can connect directly to WordPress.
* Fix: Prevent unsafe file renaming during metadata updates.
* Fix: Hotfix SSRF vulnerabilities by using wp_safe_remote_get for external URLs and secure URL fetching in audio transcription and file handling.
* Add: Improved embedding dimension handling with matryoshka support, showing fixed vs configurable dimensions in the UI with clearer tooltips.
* Update: Redesign and refine the ChatGPT Theme and Foundation Theme with improved layouts, bubble styling, and more flexible avatar/name display and header titles.
* Add: Introduce 'context framing' for embeddings with a new filter.
* Add: Moved Embeddings "Sync Settings" into Settings > Knowledge with separate Local Content and Remote URLs sections and a new Sync Interval option.
* Add: Store Shortcuts prompts securely on the server and only send a shortcutId to the client so prompt text is no longer exposed.
* Add: Load plugin translations properly with load_plugin_textdomain to ensure all text is translatable.
* Fix: Via MCP, ensure scheduled posts created via wp_update_post respect the schedule_for parameter and edit_date flag so they publish at the correct time.
* Add: New MCP integration for Polylang.
* Fix: Improve Gemini 3 support, restoring vision capabilities, function calling, and enforcing a single candidate response, and fixed image generation pricing.
* Add: Support image generation via OpenRouter.
* Fix: Resolve undefined array key warnings in Remote URL sync and only update timestamps when content actually changes.

* Add: New "Remote URL" feature for Embeddings to create and auto-sync embeddings from external URLs with change detection.
* Fix: Corrected auto-scroll behavior for non-streaming chatbots so conversations stay in view.
* Add: Enabled multi-block support for Magic Wand tools (Correct Text, Enhance Text, and Translate Text).
* Add: Introduce a user.query filter in the JS API so developers can intercept, modify, or cancel user messages before sending.
* Add: Support next_run_delay for multi-step tasks to better control task scheduling.
* Fix: Resolved an issue where multi-file uploads were empty.
* Fix: Ensured the Standard Header correctly displays the Popup Title.
* Fix: Adjusted link colors in the Timeless theme.
* Fix: Prevent shortcuts from bypassing locked chatbots (GDPR consent, for example).
* Important: Changed the mwai_chatbot_reply filter to pass a reply object instead of a query. Developer! Use reply->query where query was previously used.

* Update: Removed unused files and code to reduce clutter and improve performance.

* Add: Added title filter to the Embeddings table.
* Add: Added filter to all model dropdowns.
* Add: Enabled custom placeholder support and model-aware credit customization via new and updated filters for developers.
* Add: Introduced prompt caching for Anthropic and a free-text dimension input for non-OpenAI embeddings.
* Add: Added dimension mismatch warnings for Pinecone and Qdrant to help diagnose configuration issues.
* Add: Included "speech_recognition" support in the embed.js system.
* Fix: Resolved multiple embedding issues, including OpenRouter parameter compatibility, Pinecone Serverless URLs, and vector store file uploads.
* Fix: Improved compatibility with multilingual plugins, placeholder processing, and post content handling through dedicated filters.
* Update: Performed an end-of-year cleanup by removing expired database migrations, deprecating outdated Claude 3 Opus models, and tidying up legacy debug and commented code.

* Add: Support for OpenRouter embedding models.
* Update: Friendlier onboarding.
* Update: Improve default environments with better validation.
* Update: Clearer warnings for misconfigured setups.
* Update: Enhanced the default CSS for Custom Theme.
* Fix: A few issues with Qdrant.