diff --git a/CLAUDE.md b/CLAUDE.md
index c12cabe183..1b3b6dfb2d 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -1,41 +1,5 @@
 # CLAUDE.md
 
-**[AGENTS.md](./AGENTS.md) is the source of truth for working in this repo — read it.**
-Its Prime Directives are binding: each of the rules that must never be missed is
-inlined below as one sentence, its enforcing hook, and a pointer to the AGENTS.md heading.
-
-## ⛔ Claim the issue before you write any code
-
-Every agent shares one GitHub identity: the assignee field is a presence bit, the `Claim:`
-comment (session ID + branch) is the identity. The session that owns a card performs both acts
-— a seat picking for itself takes only an unassigned card, assigns itself and posts the claim
-before any other action; a PM dispatch sets the assignee and posts the `Claim:` for its dev, who
-inherits both, checks the newest `Claim:` names its branch, posts no second claim, and ⛔ never
-writes the assignee or yields the card. The comments decide, not the field: a `Claim:` from
-another session or branch means taken — ⛔ never reassign; a bare assignee with no `Claim:` is
-a dispatch's first step, not a foreign claim. No hook enforces this one. Full rule: AGENTS.md →
-**Multi-agent working discipline**, its paragraph **Claim the issue BEFORE you write any code.**
-
-## ⛔ Worktree-first — before your FIRST file edit (AGENTS.md Prime Directive #11)
-
-Never edit a shared primary checkout — this repo's or any sibling repo's (`objectui`,
-`cloud`); its HEAD and tree move under you. One dedicated worktree per task, per repo.
-Hooks in `.claude/hooks/`: `guard-main-checkout.sh` (Edit/Write/NotebookEdit) and
-`guard-main-checkout-bash.sh` (the same writes as Bash); override `OS_ALLOW_MAIN_EDITS=1`.
-Full rule: AGENTS.md → **Prime Directives**, directive 11.
-
-## ⛔ Never `git stash`, never kill by name — worktree isolation covers neither
-
-`refs/stash` lives in the common `.git` dir and the process table is one per container, neither isolated: your `pop`
-takes another agent's entry, a name-matched kill takes their run, and both report **success**. Use a patch or a wip
-commit; kill only a PID you recorded. Hooks `guard-shared-stash.sh` / `guard-process-kill.sh` (`OS_ALLOW_STASH=1`,
-`OS_ALLOW_PROCESS_KILL=1`; re-run each `.selftest.sh`). Full rule: AGENTS.md → **Multi-agent working discipline**.
-
-## ⛔ Never edit `content/docs/releases/` in a code PR
-
-Release notes are written **centrally, at release time**, never accreted a row per PR; a
-factual error there is a dedicated docs-only PR or an issue, never a rider on code changes.
-No hook: your PR's input to them is its **changeset** (`.changeset/*.md`). Full rule:
-AGENTS.md → **Documentation Guardrails**, its `content/docs/releases/` row.
-
-See **AGENTS.md** for the rest: branch hygiene, the dev stack, PR flow, the Prime Directives.
+**[AGENTS.md](./AGENTS.md) is the single source of truth for working in this repo — read it in
+full before your first edit.** One instruction set, maintained in one place: ⛔ no rule, hook
+roster or guardrail is restated here, and none is added here later.
diff --git a/scripts/pm/check-skill-line-ratchet.mjs b/scripts/pm/check-skill-line-ratchet.mjs
index 5624a595fa..5d236a308a 100644
--- a/scripts/pm/check-skill-line-ratchet.mjs
+++ b/scripts/pm/check-skill-line-ratchet.mjs
@@ -1028,7 +1028,15 @@ export const CEILINGS = new Map([
   // convention as the entries above).
   // 86 → 41: the ownership excerpt rewritten by role in the same rules-only pass;
   // re-pinned at the landed count, headroom 0.
-  ['CLAUDE.md', 41],
+  // 41 → 5: the inlined never-miss digest left the file entirely — it is now a pure
+  // pointer at AGENTS.md, which carries every rule it used to restate. Maintainer
+  // ruling 2026-09-09, verbatim and untranslated: 「其次 claude.md 是不是直接让他阅读
+  // agents.md 即可，没必要维护两套。所有仓库都有类似的问题」 (program #17161, card
+  // #17162). A LOWERING, which needs no ruling of its own — quoted because the
+  // ruling is what emptied the file. Re-pinned at the landed count, headroom 0: the
+  // 36 lines of slack a shrink leaves behind are exactly the budget a future digest
+  // would re-accrete into, which is the growth this entry exists to price.
+  ['CLAUDE.md', 5],
 ]);
 
 /**