Implement shell completions for CLI (Workstream N-Completions)

Add `reviq completions bash/zsh` command with dynamic shell completions:

- Create bash-complete.ts entry point using stricli's proposeCompletions API
- Add completions command with bash and zsh support (fish planned)
- Extract app export to separate app.ts for shared imports
- Add @stricli/auto-complete dependency and __reviq_bash_complete bin entry

Also fix lint/type errors in api-server tests and helpers.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/api-server/src/procedures/orgs/helpers.ts

@@ -120,5 +120,5 @@ export async function countOwners(
     .where("role", "=", "owner")
     .executeTakeFirstOrThrow();
 
-  return Number(result.count);
+  return result.count;
 }