T09: KI-Copilot API + Hybrid Workflow Engine + LLM client + event-triggered workflows

- KI-Copilot: NL query → proposed actions, execute with RBAC, history, audit logging
- LLM client: mock mode (no API key) + OpenAI-compatible mode (AI_MODEL/AI_API_KEY)
- Action mapper: NL intent → API calls (create/update/delete/search company/contact)
- Workflow engine: step types (action/approval/notification/condition), JSONB steps
- Workflow lifecycle: pending → in_progress → completed/rejected/cancelled
- Event-triggered workflows: event bus → auto-start instances
- Code-engine workflows: onboarding on user.created event
- Approval timeout: auto-reject after configured hours
- 5 new tenant-scoped tables with RLS: ai_conversations, ai_messages, workflows, workflow_instances, workflow_step_history
- Migration 0004: all tables + RLS policies + tenant_id + indexes
- 238 tests pass (30 AC + 105 coverage + 103 existing), 84.12% T09 module coverage
- MissingGreenlet fix: safe accessor helpers for async ORM attribute access

.a0/next_steps.md

@@ -0,0 +1,26 @@
+# Next Steps — LeoCRM
+
+## Current: T03 COMPLETE ✅ (commit 7a5a48f, pushed)
+
+## Phase 3 Implementation Progress
+- T01 ✅ Core Infrastructure + Multi-Tenant + Auth (commit 7a7daf8)
+- T02 ✅ Company + Contact + Import/Export (commit 6bf0746)
+- T03 ✅ Plugin System Framework (commit 7a5a48f)
+
+## Next: T07a ∥ T09 (Parallel)
+### T07a — Frontend SPA Shell
+- Deps: T01 ✅
+- Reqs: 23 features, 27 ACs
+- Vue 3 + Vite + Pinia + Vue Router + TailwindCSS
+- Auth flow, layout, navigation, dashboard, settings
+
+### T09 — KI-Copilot API + Hybrid Workflow Engine Backend
+- Deps: T01 ✅, T02 ✅
+- Reqs: 5 features, 22 ACs
+- LLM integration, workflow engine, task automation
+
+## After T07a + T09: T07b (Frontend Feature Pages)
+## After T07b: T10 (Monitoring, Performance, Documentation)
+
+## v1 Execution Order
+T01 ✅ → T02 ✅ → T03 ✅ → (T07a ∥ T09) → T07b → T10