fix: resolve integration issues after phase branch merges

- Register errandProcedures in appRouter (was defined but never spread)
- Fix nullable projectId guard in errand delete/abandon procedures
- Add sendUserMessage stub to MockAgentManager in headquarters and
  radar-procedures tests (AgentManager interface gained this method)
- Add missing qualityReview field to Initiative fixture in file-io test
  (schema gained this column from the quality-review phase)
- Cast conflictFiles access in CLI errand resolve command

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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:');