Load (canned) proposal from IPC

src/ipc/ipc_host.ts

@@ -6,6 +6,7 @@ import { registerShellHandlers } from "./handlers/shell_handler";
 import { registerDependencyHandlers } from "./handlers/dependency_handlers";
 import { registerGithubHandlers } from "./handlers/github_handlers";
 import { registerNodeHandlers } from "./handlers/node_handlers";
+import { registerProposalHandlers } from "./handlers/proposal_handlers";
 
 export function registerIpcHandlers() {
   // Register all IPC handlers by category
@@ -17,4 +18,5 @@ export function registerIpcHandlers() {
   registerDependencyHandlers();
   registerGithubHandlers();
   registerNodeHandlers();
+  registerProposalHandlers();
 }