diff --git a/skills/ingest/SKILL.md b/skills/ingest/SKILL.md
index 449bb2e..1f143d7 100644
--- a/skills/ingest/SKILL.md
+++ b/skills/ingest/SKILL.md
@@ -39,9 +39,17 @@ which matters on a small local model.
 5. On a real contradiction with an existing claim, follow `AGENTS.md` §Conflict: create
    `wiki/queries/conflict-<concept>-<YYYY-MM-DD>.md`. Never overwrite the existing page.
 
-Name files in kebab-case and pick stable names. Read `wiki/index.md` (and the specific
-pages it points to) to decide create-vs-update and to spot contradictions. Do not scan
-whole directories.
+**Naming — you are the sole author of these names; nothing renames your files.** Use
+minimal kebab-case: lowercase letters, digits and hyphens only — no spaces, no underscores,
+no capitals. Pick stable names so the same entity is never created twice (always `acme`,
+never also `acme-corp`). The path you write a file to MUST be byte-for-byte the path you
+list in the manifest.
+
+**Deciding create-vs-update and spotting contradictions — mind the context budget.** Use
+`wiki/index.md` to locate existing pages, then read **only** the handful that _this source
+actually names_ — the entities and concepts in the source's title and opening paragraphs —
+not everything the index lists. When in doubt, read fewer: a missed cross-link is far
+cheaper than a saturated context. Never scan whole directories.
 
 ## Finish: write the manifest, then STOP