**Filename format is canonical and not optional.** The four-digit local-time HHMM component is what makes session filenames lex-sort in true chronological order — the loading procedure depends on it. Before PUT-ing a new session log, validate the filename matches `^\d{4}-\d{2}-\d{2}-\d{4}-[a-z0-9-]+\.md$`. Legacy session logs without HHMM exist in the vault; do not edit their names, but every new write must use the full form.
Keep logs focused. Capture the goal, what was read/done, decisions, outputs, open threads, and the next step. This matches the vault's `_agent/templates/session-log-template.md`.
---
## Template
```markdown
---
type: session-log
status: complete
created: 2026-06-05T14:30
updated: 2026-06-05T14:30
tags: [agent, session]
agent_written: true
source_notes: []
session_date: 2026-06-05
client: claude-code
---
# Session Log
## Goal
One line — what this session set out to do.
## Notes Read
- [[note]] — why it was relevant
(omit if none)
## Actions Taken
Brief narrative or bullets of what was done.
## Decisions Made
- Decision — why
(omit section if none)
## Outputs Created
-`path/or/filename` — what it is
(omit section if none)
## Open Threads
- [ ] unresolved question or next step
(omit section if none)
## Suggested Next Step
One sentence: what to do first next time on this topic.
## Related
- [[wikilinks go here, in the body — never in frontmatter]]
