/agent should behave like a normal session prompt that tells the main model to use the selected Agent tool. The previous forked command path buffered the subagent run behind local command output and forced desktop clients to wait for command completion instead of seeing the normal Agent interaction stream.
Constraint: Desktop /agent must preserve ordinary chat/session semantics and still require /agent <agent> <prompt>.
Rejected: Keep slash_agent SDK event bridging | it preserves the separate forked execution path instead of fixing the product flow.
Confidence: high
Scope-risk: moderate
Directive: Do not move /agent back to context: fork without proving the desktop normal Agent tool stream still works.
Tested: bun test src/commands/agent.test.ts src/utils/processUserInput/processSlashCommand.test.ts src/server/__tests__/ws-memory-events.test.ts
Tested: cd desktop && bun run test -- --run src/stores/chatStore.test.ts src/components/chat/MessageList.test.tsx
Tested: git diff --check
Not-tested: bun run check:server is blocked before source checks by expired quarantine entries: server:cron-scheduler, server:providers-real, server:tasks, server:e2e:business-flow, server:e2e:full-flow
Desktop users need a direct way to pick an installed Agent from slash completion while preserving the existing command and skill namespace. Add /agent <agent> <prompt> as the single execution surface and render active agents as namespaced completion rows.
Constraint: Existing slash command names and ordering must remain authoritative.
Rejected: Register each Agent as a top-level /<agent> command | would collide with built-in commands, skills, and future custom commands.
Confidence: high
Scope-risk: moderate
Tested: bun run verify
