create-gantt-page-interceptor

Create a class extending the page's abstract SimpleGanttPageInterceptor, override hooks like getDesignForBar or onBarChange, and register it via appInterceptorService. This skill automates the file creation, blueprint code, and registration steps.

Register a temporary SpyInterceptor that stores the design on window.__finalDesign, then run the chrome_inspector.js script against Chrome with remote debugging on port 9222. The script saves the JSON to .agents/temp for analysis.

It supports getDesign, getDesignForGroup, getDesignForBar, populateQueryBuilder, populateMainFilter, populateIntervalFilter, onBarChange, onInitState, onRefreshState, and onEvent. The group and bar hooks mirror Kanban column and cell hooks, while populateIntervalFilter handles the date-window query.

The queue parameter is the same EntityServiceQueue instance the page's own onBarChange already uses. Creating or saving a separate queue would double-save entities or race against the page's own persistence, so you must push entries onto the shared queue.

Search the plugin's .d.ts declaration files for the abstract interceptor bound to the target route. If a specialized subclass carries the JSDoc comment "You MUST extend this instead.", that class must be used as the parent; never invent a parent class.