conversations-by-date — L1 temporal browse

Framework context

L1 retrieval scoped to a single date. Returns distinct conversation_ids with titles and sources. Pure function of (date, corpus).

When to invoke

• User cites a specific date: "last Tuesday", "yesterday", "on 2026-04-01"
• Pair with daily-memory-file for narrative reconstruction
• Pre-step before tunnel-state when the domain is unknown but the date is known

Input

date: str        # YYYY-MM-DD
limit: int = 30

Output contract

Markdown list of distinct conversations from that date. Each row: title, source, model, created timestamp, conv_id citation.

Does NOT do

• Handle relative date strings ("yesterday") — caller must resolve to YYYY-MM-DD
• Return messages — only conversation summaries
• Fabricate empty-day output — explicit "No conversations found on {date}"

Verification checklist

• [ ] DATE cast on both sides of comparison (timezone-safe)
• [ ] DISTINCT on conversation_id
• [ ] ORDER BY created DESC