pm-dispatch(review): SKILL.md ③ — pr_create summons nobody, pr_ready is the hand-off's backstop

The seat's contract review on 50118ff found the one governed sentence that
contradicted the mechanism it describes: SKILL.md L200 said
`pr_create`/`pr_ready` request and assign nobody, while ops.mjs keeps
`governedReview: true` on `pr_ready` (`GOVERNED_REVIEW_OPS` derives to
`['pr_ready']`) and execute.mjs pins that a Tier H `pr_ready` requests every
uncovered approver and assigns an approver-author. Ruled text follows code:
L200 now says `pr_create` requests and assigns nobody, `pr_ready` fills only
what the seat's hand-off left uncovered (zero writes once the hand-off was
made), a head that moves after the PASS goes back to waiting for review, and
an off-relay PR has its requested reviewers and assignees read by the seat.
One line rewritten in place (119 → 118 B), 319 lines kept, no clause moved;
L198, L199 and L201 are byte-identical. No script changed.

Claude-Session: https://claude.ai/code/session_01QSeKYmhU5KEj1nukYhp1Tg
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

.claude/skills/pm-dispatch/SKILL.md

@@ -197,7 +197,7 @@ PM 的工作是循环:选卡 → 认领 → 派发 → 收集 → 复核 → 报
 - 批准后再推亦不过期;席位落地 = 过落地前检、清标、ready、auto-merge,踢出/变基同法。
 - ③ 请审 = 席位交棒:ACCEPT 与现 head 同形 PASS 俱在案后,中继 `pr_request_reviewers` 请审批人。
 - 作者是审批人 ⇒ `assign` 它、请其余(请它必 422);⛔ 永不派/请席位自身账号;Tier S 不交人。
-- `pr_create`/`pr_ready` 不请审不指派;PASS 后 head 移 ⇒ 回等复核;脱中继 PR 自读请审人与指派。
+- `pr_create` 不请不派;`pr_ready` 只补交棒漏;PASS 后 head 移 ⇒ 回等复核;脱中继 PR 自读请/派。
 - 速读「需要你做的」求批点名 PASS 评论 id+`Head-sha`;无 PASS ⇒ 写 contract review owed 不求批。
 - ④ 轮次报告单列 awaiting a human merge。
 - skills 车道自有 PR:纯代码面如 `scripts/pm/` 由本席按达档自审(清单不减)后落地。