task(A3): pilot v2 tools select+line

frontend/src/interaction/dispatcher.ts

@@ -25,6 +25,10 @@ export interface DispatcherDeps {
   setPreview?(el: unknown | null): void;
   /** Tool-Nachschlag überschreibbar (Default: aktive Registry-Tools). */
   toolLookup?(toolId: string): ToolExtensionV2 | undefined;
+  /** Dokument-Fassade für Tools (ab A3; lazy pro Event abgefragt). */
+  getDoc?(): import('../kernel/document/CADDocument').CADDocument | undefined;
+  /** Selektions-Bridge für Tools (ab A3; lazy pro Event abgefragt). */
+  getSelectionBridge?(): import('../plugins/types').ToolSelectionBridge;
 }
 
 export class InteractionDispatcher {
@@ -91,12 +95,14 @@ export class InteractionDispatcher {
     this.bound = true;
   }
 
-  private buildContext(): ToolContext {
+  private buildContext(): import('../plugins/types').FullToolContext {
     const toolId = this.active?.manifest.id ?? '';
     return {
       options: this.deps.getOptions?.(toolId) ?? {},
       setStatus: (msg) => this.setStatus(msg),
       setPreview: (el) => this.deps.setPreview?.(el),
+      doc: this.deps.getDoc?.(),
+      selection: this.deps.getSelectionBridge?.(),
     };
   }