feat: let agents read supervisor story graphs

Expose saved decisions, timelines and source evidence through read-only Story Graph tools across Model, Harness and local/remote OpenCode and Continue. Supervisor enablement and runtime assignments govern discovery and calls; reads do not invoke models or modify stored evidence. Remote use requires matching Desktop and Agent changes.

Make Continue discussion show the complete editable message with a separated destination and shared action layout. Sending uses the visible draft without reattaching removed context.

Validation: existing focused MCP, runtime, controlled Linux Host, discussion component and Electron layout checks plus typechecks; staged diff check passed. Cross-scope fact reuse, historical reconstruction and full package acceptance remain deferred.

Release note: Agents can consult saved supervisor decisions and their sources when continuing work. Continue discussion now lets you review and edit the complete message before sending.

src/main/agent/goodbuddy-harness-control-plane.ts

@@ -922,7 +922,7 @@ export class GoodBuddyHarnessControlPlane {
           definition,
           dispose
         })
-        if (MAIN_WEB_TOOL_NAMES.has(tool.name)) {
+        if (MAIN_WEB_TOOL_NAMES.has(tool.name) || isStoryGraphTool(tool.name)) {
           record.askToolDefinitions.set(tool.name, definition)
         }
       }
@@ -1454,3 +1454,4 @@ export class GoodBuddyHarnessControlPlane {
   }
 }
 import { imageToolDescriptionLimit } from '../../shared/image-generation-contracts'
+import { isStoryGraphTool } from '../../shared/story-graph-tools'