NEWS

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shidashi 0.2.0 (2026-04-10)

New Features

• Added stream_viz htmlwidgets widget for real-time multi-channel signal viewing; binary stream files are produced by stream_to_js() and fetched by the browser via fetchStreamData(); rendering engine switched from D3 to Three.js (WebGL) for improved performance on high-density multi-channel data
• Added streaming helpers: stream_init() sets up per-session stream directories with automatic cleanup; stream_path() returns the token-qualified file path; stream_file_id() builds the {token}_{ns(id)} identifier used by both R and JS
• Added stream_to_js() for writing binary envelope files (supports raw, json, int32, float32, float64 body types) and read_stream_vis() for reading them back in R
• Added streamVizOutput() / renderStreamViz() / updateStreamViz() Shiny bindings for the stream_viz widget
• register_output() is now a server-side function: it assigns the render function, registers the MCP output spec, and injects download/pop-out widget icons via JS overlay (no UI-side wrapper needed)
• Added output widget overlay system: registered outputs gain hover-visible download and pop-out icons injected entirely by JS; download modal supports image, htmlwidget, threeBrain, data, and stream_viz types
• Added server_standalone_viewer() — a hidden module that re-renders a parent session's output in a standalone browser tab (pop-out window), forwarding inputs back to the original module session
• Added fire_event() and get_event() for a reactive session event bus; events can be scoped locally (per-session) or globally (cross-tab broadcast via shared_id); get_theme() is a convenience wrapper that returns the current dashboard theme
• Added register_session() / unregister_session() for comprehensive session life-cycle management with automatic cleanup, reactive event bus setup, and cross-tab synchronization support; replaces the deprecated register_session_id()
• Added get_handler() / set_handler() for managing named session-scoped Observer objects with a shared registry; handlers are automatically destroyed on session end
• Added enable_input_broadcast() / disable_input_broadcast() and enable_input_sync() / disable_input_sync() for opt-in cross-tab input state synchronization; broadcast publishes the current session's inputs for peer tabs, sync restores inputs from a peer session
• Added switch_module() to programmatically navigate to another module from server-side code; supports cross-iframe forwarding via JS postMessage
• Added card_badge() UI component for dynamic badge widgets in card headers; set_card_badge() updates badge text and styling from the server without re-rendering; card_recalculate_badge() creates a clickable "recalculate needed" badge with enable_recalculate_badge() / disable_recalculate_badge() toggles
• Added html_asis() for escaping HTML special characters to display strings literally; combine_html_class() merges and remove duplicated class strings; remove_html_class() removes specified classes from a class string
• shared_id is now unified and shared across UI and server via init_app(); resolved from URL query string, R option, environment variable, or auto-generated
• Internal session registries (tools, output_renderers, handlers) now use fastmap for O(1) lookup and efficient memory management
• Added _captureSVG() helper in JS to convert SVG (raster) elements (e.g. D3 output) to PNG data URLs for the query-UI tool
• Added shidashi.set_shiny_input JS message handler for programmatic cross-session input forwarding
• Added shidashi.switch_module JS message handler for programmatic module navigation from JS
• Added shidashi.register_output_widgets JS message handler that injects the download/pop-out overlay icons on registered outputs
• Added demo template modules: output_widgets, stream_viz, and session_events; added hidden standalone_viewer module
• Added htmlwidgets to Imports

Bug Fixes

• Fixed download file extension not used correctly in register_output()
• Fixed position issue for output widget overlay container
• Fixed multi-result MCP tool request not handled correctly in chat-bot
• Sanitized MCP tool-call results for dashboard display

shidashi 0.1.8 (2026-03-23)

New Features

• Added built-in AI chat-bot panel powered by ellmer and shinychat; supports multiple providers, in-memory conversation history, mode-based tool permissions, token/cost display, and early-stop controls
• Added init_chat() to create an ellmer Chat object from R options (shidashi.chat_provider, shidashi.chat_model, shidashi.chat_system_prompt, shidashi.chat_base_url)
• Added MCP (Model Context Protocol) proxy server (inst/mcp-proxy/) so external LLM clients can interact with a running Shiny application via MCP
• Added mcp_wrapper() to register an MCP endpoint for a Shiny module
• Added register_input() / register_output() helpers to expose Shiny inputs and outputs as MCP tool parameters with descriptions
• Added skills system: skill_wrapper() parses and runs reusable agent skill scripts; skill working directory is resolved relative to the skill folder
• Tools and skills are now category- and permission-aware; module IDs are excluded from tool names for consistency
• Added module_drawer(), drawer_open(), drawer_close(), and drawer_toggle() for controlling a slide-in drawer panel
• module_info() now returns richer per-module metadata; added current_module() and active_module() helpers for querying the active Shiny module
• Modules support an optional agents.yaml for declaring agent configurations (tools, skills, auto-approve rules)
• MCP host can be a remote server; fuzzy module reference is supported when resolving module IDs
• Added demo template modules: aiagent, filestructure, and mcpsetup
• Added ellmer content helpers: S7 generic ellmer_as_json() for ContentText, ContentImageInline, ContentImageRemote, and ContentToolResult; and content_to_mcp() for converting chat content to MCP responses
• Chat-bot UI displays token usage and API cost next to each turn

Bug Fixes

• Fixed images not being passed correctly to the agent
• Fixed sidebar start-collapsed behavior
• Fixed bare-bone template initial setup
• Fixed MCP server query-UI tool response
• Fixed permission issue when executing skill scripts
• Applied npm audit fix to bundled JavaScript dependencies

shidashi 0.1.6 (2024-02-17)

• Load scripts starting with shared- when loading modules

shidashi 0.1.5 (2023-04-04)

• Fixed accordion and card_tabset not working properly when inputId starts with digits
• Updated templates and used npm to compile
• Session information now stores at userData instead of risky cache
• Ensured at least template root directory is available

shidashi 0.1.4 (2022-10-15)

• Fixed a bug that makes application fail to launch on Windows
• Added support to evaluated expressions before launching the application, allowing actions such as setting global options and loading data

shidashi 0.1.3 (2022-08-06)

• Allow modules to be hidden from the sidebar

shidashi 0.1.2 (2022-06-21)

• Fixed group name not handled correctly as factors
• Module URL respects domain now and is generated with relative path
• Works on rstudio-server now
• More stable behavior to flex_container
• Allow output (mainly plot and text outputs) to be reset
• Fixed iframe height not set correctly
• Enhanced 500 page to print out traceback, helping debug the errors
• Added flex_break to allow wrapping elements in flex container
• Added remove_class to remove HTML class from a string
• Allow to set data-title to cards

shidashi 0.1.0 (2021-11-17)

• Added a NEWS.md file to track changes to the package.