last30

${var} — Topic to research (required). Append --quick for a lighter pass (≤15 sources), or --days=N to change the lookback window (default: 30).

Google aggregates editors. A flat "top N posts per platform" aggregates noise. This skill does two things differently: (1) reframes output around narratives (clusters the same story across platforms) instead of platform-siloed recaps, and (2) makes the disagreement between platforms the primary signal — where Reddit is bearish and X is bullish on the same story, that divergence is usually the most actionable finding.

If ${var} is empty, abort and notify: "last30 requires var= set to a topic". Exit.

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Steps

0. Parse parameters and bootstrap

Extract from ${var}:

• topic: everything before any -- flags, trimmed
• --quick: lighter mode (fewer sources, shorter report)
• --days=N: custom lookback window (default: 30)

DAYS=30  # or from --days flag
FROM_DATE=$(date -u -d "${DAYS} days ago" +%Y-%m-%d 2>/dev/null || date -u -v-${DAYS}d +%Y-%m-%d)
TO_DATE=$(date -u +%Y-%m-%d)
FROM_TS=$(date -u -d "${FROM_DATE}" +%s 2>/dev/null || date -u -j -f "%Y-%m-%d" "${FROM_DATE}" +%s)
YEAR=$(date -u +%Y)
TODAY=$(date -u +%Y-%m-%d)
TOPIC_SLUG=$(echo "$TOPIC" | tr '[:upper:]' '[:lower:]' | sed -E 's/[^a-z0-9]+/-/g; s/^-+|-+$//g')

Read memory/MEMORY.md for tracked interests. Read memory/topics/last30-${TOPIC_SLUG}.md if it exists — it holds the prior snapshot used for the What Changed section below. If absent, this is a cold run. Read the last 3 memory/logs/ entries to avoid duplicating very recent work on the same topic.

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1. Entity pre-resolution

Run 2-3 WebSearches to discover the right handles, communities, and terms. Do this before platform queries — searching blind across wrong subreddits wastes sources.

WebSearch: "${topic}" site:reddit.com
WebSearch: "${topic}" site:x.com OR site:twitter.com
WebSearch: "${topic}" community OR subreddit OR forum OR "best account"