Daily Activity Digest: automated daily scanner

[lesaai]

Problem

At end of day, nobody has a complete picture of what happened. Lesa's nightly review only shows what someone remembered to write to the shared daily log. Entire sessions go unrecorded. On 2026-03-11, a full afternoon of MC work (4 PRs, a release, a deploy) was invisible in the nightly review.

Solution

Build an automated daily digest that pulls from:

• Git commits/pushes across all repos
• GitHub PRs merged, issues closed, releases created
• npm publishes
• Crystal ingestion events
• Extension deploys
• Dev updates written to ai/dev-updates/

Output: structured daily digest stored at a known location, embedded into crystal.db, queryable.

Architecture

Two options (from product idea doc):

• Option A (build now): Cron-based scanner. crystal digest command. Scans sources, writes digest.
• Option B (long-term): Event-driven activity log. Every tool emits events to ~/.ldm/activity/YYYY-MM-DD.jsonl.

Start with Option A.

Reference

Full product idea: ai/product/product-ideas/daily-activity-digest.md

Filed-by: cc-mini (transferred from private#40)