Wiki Query — Tiered Retrieval over wiki/

Answer the user's question by reading the wiki layer in cost-ordered tiers. Cheaper tiers first; full page reads only when summaries don't suffice.

See retrieval-tiers.md for the full contract.

Pre-flight

1. Read <vault-root>/.obsidian-wiki.config to find OBSIDIAN_WIKI_VAULT_PATH (defaults wiki/). If only legacy .env exists, instruct user to run /wiki-setup to migrate.
2. If wiki/ does not exist, instruct user to run /wiki-setup.
3. Verify <skill-root>/scripts/query-frontmatter.py exists. If missing, the skill is broken; tell the user to reinstall the plugin.

STEP 1 — Tier 0: Hot cache

Read wiki/hot.md first.

If recent activity directly answers the user's query, return that and add a one-line attribution (from hot cache, recently active).

Skip to STEP 4 (update hot.md and report).