Wiki Digest

Wiki Digest — Knowledge Newsletter Generator

You are generating a human-readable digest of recent wiki activity: what was learned, what was updated, what themes are emerging, and what's worth reviewing. This skill summarizes knowledge, not sources — think of it as a weekly review session, not an ingestion status report.

Before You Start

Writing profile: Before drafting or rewriting natural-language Markdown, read and apply the Writing Profile Resolution section in llm-wiki/SKILL.md. Framework schema, provenance, safety, and operation-specific requirements take precedence. WRITING.md preferences apply only to newly drafted or rewritten natural-language Markdown; preserve source content and structured records.

1. Resolve config — follow the Config Resolution Protocol in llm-wiki/SKILL.md (inline @name override → walk up CWD for .env → global config → prompt setup). This gives OBSIDIAN_VAULT_PATH and OBSIDIAN_LINK_FORMAT.
2. Parse the period from the user's request:
   • "daily" / "today" / "yesterday" → last 24 hours
   • "weekly" / "this week" / no argument (default) → last 7 days
   • "monthly" / "this month" → last 30 days
   • ISO date like "since 2026-05-01" → pages updated since that date
   • Explicit number like "last 14 days" → that many days
3. Read $OBSIDIAN_VAULT_PATH/log.md — last 200 lines — for entries within the period (timestamps are ISO-8601 prefixed lines).
4. Read $OBSIDIAN_VAULT_PATH/hot.md for current session context.
5. If $OBSIDIAN_VAULT_PATH/_insights.md exists, read its Anchor Pages table — you'll use it later to identify which new pages became hubs.

Step 1: Collect Pages Active in the Period

Glob all .md files under $OBSIDIAN_VAULT_PATH. Skip special/system files:

• index.md, log.md, hot.md, AGENTS.md, _insights.md
• Anything under _meta/, _archives/, _raw/
• Journal digest pages themselves (journal/digest-*.md)

For each remaining page, read its frontmatter:

• created — when the page was first written
• updated — when it was last modified

Classify:

• New pages: created is within the period
• Updated pages: updated is within the period but created is before it
• Unchanged: neither date falls in the period → skip

If fewer than 5 pages were active, note it and offer to widen: "Only 3 pages were active in the last 7 days — want a monthly digest instead?" Stop here unless the user says to continue.

For each active page, collect: title, category, tags, summary (frontmatter field), lifecycle, any ^[ambiguous] or ^[inferred] markers in the body.

Step 2: Identify Themes

From all active pages' tags, tally theme frequency:

For each tag across new + updated pages:
  count how many active pages carry it
Sort descending, take top 5

Also read $OBSIDIAN_VAULT_PATH/_meta/taxonomy.md (if it exists). Flag any tag from step 1 that does not appear in the taxonomy — these are new vocabulary words that emerged this period.

Note which categories grew most (concepts/, entities/, skills/, synthesis/, references/, etc.).

Step 3: Find Notable New Connections

Scan new and updated pages for cross-category wikilinks — links that bridge different knowledge layers. These are the most intellectually interesting outputs of the period.

For each active page, extract all [[wikilink]] targets. Classify each link by the target's category prefix. Flag links that cross categories (e.g., a concepts/ page linking to an entities/ page, or a synthesis/ page bridging two topics).

Rank candidates by interestingness:

• +3 if the link is across two categories that rarely connect (use _insights.md bridge data if available)
• +2 if the target page is a top-10 hub (per _insights.md anchors)
• +2 if the link appears in a synthesis/ page (deliberate cross-cutting)
• +1 if the source page is marked ^[inferred] (synthesized connection, not directly stated)

Take the top 3–5 connections. Write each as a plain-English sentence: not just "A → B" but why the connection is interesting.

Step 4: Surface Open Threads

Scan active pages and _raw/ for unresolved work:

• Drafts: pages with lifecycle: draft or lifecycle: stub
• Ambiguous claims: count ^[ambiguous] markers across all active pages (don't list every one — just the count and which pages have the most)
• Unstaged notes: count files in $OBSIDIAN_VAULT_PATH/_raw/ (anything here hasn't been promoted)
• Taxonomy gaps: tags from Step 2 that aren't in _meta/taxonomy.md

Step 5: Choose Recommended Re-reads

From the existing (pre-period) pages, identify 2–3 worth revisiting given this week's new context.

Heuristic: find pre-period pages that share the most tags with the active pages from Step 1. These are foundational pages whose topic was extended this period — the new pages build on them but the user may not have revisited the foundation.

Also include any pre-period page that now has 2+ new incoming links from active pages (it just became more connected — a sign it's load-bearing).

Write each recommendation with a concrete reason: "[[concepts/attention-mechanism]] — your foundational page; three new papers ingested this week all extend it", not just the page title.