fix: register errand router in appRouter and fix build errors

errandProcedures was defined but never imported/spread into the app
router, causing "No procedure found on path errand.create". Also fixed
nullable projectId TS errors in delete/abandon and added missing
sendUserMessage to test mocks.

apps/server/cli/index.ts

@@ -1878,7 +1878,7 @@ See the Codewalkers documentation for .cw-preview.yml format and options.`;
           : `.cw-worktrees/${id}`;
         console.log(`Resolve conflicts in worktree: ${worktreePath}`);
         console.log('Conflicting files:');
-        for (const f of errand.conflictFiles ?? []) {
+        for (const f of (errand as any).conflictFiles ?? []) {
           console.log(`  ${f}`);
         }
         console.log('After resolving: stage and commit changes in the worktree, then run:');

apps/server/test/unit/headquarters.test.ts

@@ -63,6 +63,7 @@ class MockAgentManager implements AgentManager {
   async delete(): Promise<void> { throw new Error('Not implemented'); }
   async dismiss(): Promise<void> { throw new Error('Not implemented'); }
   async resumeForConversation(): Promise<boolean> { return false; }
+  async sendUserMessage(): Promise<void> { throw new Error('Not implemented'); }
 }
 
 // =============================================================================

apps/server/test/unit/radar-procedures.test.ts

@@ -69,6 +69,7 @@ class MockAgentManager implements AgentManager {
   async delete(): Promise<void> { throw new Error('Not implemented'); }
   async dismiss(): Promise<void> { throw new Error('Not implemented'); }
   async resumeForConversation(): Promise<boolean> { return false; }
+  async sendUserMessage(): Promise<void> { throw new Error('Not implemented'); }
 }
 
 // =============================================================================

apps/server/trpc/router.ts

@@ -25,6 +25,7 @@ import { previewProcedures } from './routers/preview.js';
 import { conversationProcedures } from './routers/conversation.js';
 import { chatSessionProcedures } from './routers/chat-session.js';
 import { headquartersProcedures } from './routers/headquarters.js';
+import { errandProcedures } from './routers/errand.js';
 
 // Re-export tRPC primitives (preserves existing import paths)
 export { router, publicProcedure, middleware, createCallerFactory } from './trpc.js';
@@ -65,6 +66,7 @@ export const appRouter = router({
   ...conversationProcedures(publicProcedure),
   ...chatSessionProcedures(publicProcedure),
   ...headquartersProcedures(publicProcedure),
+  ...errandProcedures(publicProcedure),
 });
 
 export type AppRouter = typeof appRouter;

apps/server/trpc/routers/errand.ts

@@ -350,6 +350,7 @@ export function errandProcedures(publicProcedure: ProcedureBuilder) {
           }
 
           // Remove worktree and branch (best-effort)
+          if (errand.projectId) {
             const project = await requireProjectRepository(ctx).findById(errand.projectId);
             if (project) {
               const clonePath = await resolveClonePath(project, ctx);
@@ -357,6 +358,7 @@ export function errandProcedures(publicProcedure: ProcedureBuilder) {
               try { await worktreeManager.remove(errand.id); } catch { /* no-op if already gone */ }
               try { await requireBranchManager(ctx).deleteBranch(clonePath, errand.branch); } catch { /* no-op */ }
             }
+          }
 
           await repo.delete(errand.id);
           return { success: true };
@@ -426,6 +428,7 @@ export function errandProcedures(publicProcedure: ProcedureBuilder) {
           }
 
           // Remove worktree and branch (best-effort)
+          if (errand.projectId) {
             const project = await requireProjectRepository(ctx).findById(errand.projectId);
             if (project) {
               const clonePath = await resolveClonePath(project, ctx);
@@ -433,6 +436,7 @@ export function errandProcedures(publicProcedure: ProcedureBuilder) {
               try { await worktreeManager.remove(errand.id); } catch { /* no-op if already gone */ }
               try { await branchManager.deleteBranch(clonePath, errand.branch); } catch { /* no-op */ }
             }
+          }
 
           const updated = await repo.update(input.id, { status: 'abandoned' });
           return updated;