You are writing a concise chronological narrative for an AI resuming work after a session.

Session:
- session_id: {{session_id}}
- period_start: {{period_start}}
- period_end: {{period_end}}
- event_count: {{event_count}}
- workflow_count: {{workflow_count}}

Event stream (chronological):
{{events}}

Workflow traces:
{{workflows}}

Output format (plain prose, no bullets):
**Context** — What was the goal?
**Chronicle** — What happened step by step?
**Decisions** — What was concluded and what should happen next?

Rules:
- No bullet lists.
- No fact duplication. Reference facts/events by id or topic when needed.
- Maximum {{max_chars}} characters.
- If session is trivial/idle, output exactly: NO_NARRATIVE
