Summary

• Replace OrgEditPage placeholder with full organization editor at /org/edit
• Three-tab interface (General, Agents, Departments) with Radix UI Tabs synced to URL params
• CRUD for departments and agents via Drawer (edit/delete) and Dialog (create) components
• Drag-drop reordering for departments (grid) and agents within departments (list) via @dnd-kit
• Optimistic updates with rollback on failure for reorder operations
• GUI/YAML editor toggle with js-yaml serialize/parse/validate
• Company settings form: name, autonomy level, monthly budget (EUR), communication pattern
• Zustand store extended with 9 mutation actions + 2 optimistic helpers
• API endpoint stubs ready for backend implementation (mutation endpoints return 404 until backend is built)
• Shared component reuse: AgentCard, DeptHealthBar, SectionCard, ConfirmDialog, Drawer, InputField, SelectField, etc.
• Loading skeleton, empty states, error boundaries on all tabs
• Data composition hook with polling (30s) + WebSocket real-time updates

Test plan

• 1213 Vitest tests pass (24 new tests for this feature)
• TypeScript type-check clean
• ESLint clean (no errors)
• Storybook builds successfully (6 new stories)
• Pre-commit hooks pass
• Visual verification at http://localhost:5173/org/edit
• Tab switching updates URL params
• Drag-drop reorders departments and agents
• YAML toggle round-trips config correctly
• Create/edit/delete dialogs open and close properly

Review coverage

Pre-reviewed by 5 agents (frontend-reviewer, api-contract-drift, issue-resolution-verifier, docs-consistency, test-quality-reviewer). 16 findings identified and addressed in second commit.

Closes #786

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