Resolves#24 per CEO direction.
DB is source of truth for workspace_schedules. POST /org/import becomes
idempotent — only touches rows it owns (source='template'); runtime-added
schedules (Canvas / API) are preserved across re-imports.
- Migration 022: adds source TEXT NOT NULL DEFAULT 'runtime' CHECK in
('template','runtime'); unique index on (workspace_id, name) so the
org/import upsert can use ON CONFLICT.
- org.go: schedule INSERT becomes
INSERT ... 'template' ON CONFLICT (workspace_id, name) DO UPDATE
SET ... WHERE workspace_schedules.source='template'.
Never DELETEs.
- schedules.go: runtime POST writes 'runtime' explicitly; List handler
surfaces the source field on the response so Canvas can render badges.
- 3 new unit tests assert source='runtime' default for runtime CRUD,
the SQL shape contract for org/import (additive + idempotent +
runtime-preserving + never-DELETE), and List response surface.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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