feat(pm): mechanise the prior-ruling search for decision cards

.claude/skills/pm-dispatch/references/decision-analysis.md

@@ -27,7 +27,7 @@
 - 一句话问题:开头一句话说清冲突是什么,⛔ 不带实现名词,写客户看得见的症状。
 - 选项 × 真实代价表:每选项一行,做什么 + 客户可感知的后果;有实测的注明实测。
 - 业务含义直译:每选项配一句业务上等于什么,允许行业类比。
-- 四轴从业务立场论证:论据是客户、产品或事故后果,机制名词只作括号补充。
+- 四轴从业务立场论证(含四棱行):论据是客户、产品或事故后果,机制名词只作括号补充。
 - 防 AI 犯错轴写清出错时谁看到什么:响亮拒绝,还是静默泄露。
 - 推荐 + 回退 + 置信缺口:荐一项、给回退项、明说本分析看不见什么。
 - 裁后执行段:写明裁定之后怎么执行,让维护者只裁方向不背执行。
@@ -42,8 +42,8 @@
 - ② 实际业务拉动:今天谁撞上;零拉动默认 defer 或 remove。
 - ③ 防 AI 犯错:闭合枚举优于自由结构,响亮拒绝优于静默容忍。
 - ④ 创业阶段不扩散:remove 优于 declare-and-maintain,每个已声明的键都是永久义务。
+- 四棱后一行:`Prior rulings read: <terms> → <n> hits; <ADR-xxxx Dn|none>`;未搜成整行写 unresolved。
 - 末尾一行推荐 + 字母选项(A/B/…),再加一行强制置信缺口:本分析看不见什么。
-- 四棱行同受六项写法约束:论据从业务立场写,机制名词只作括号补充。
 
 ## 应用仓推荐序特例
 

.github/workflows/lint.yml

@@ -1103,6 +1103,45 @@ jobs:
       - name: Widening-tell gate self-test
         run: pnpm check:pm-widening-tells
 
+      # Prior-ruling reader self-test (#17009) — same family and the same split
+      # as every step around it. The LIVE read takes a card number over REST and
+      # searches this checkout's `origin/main`, so it is a tool a seat runs
+      # against the card in front of it, not a verdict about the PR that happens
+      # to run CI next. Only the offline self-test runs here.
+      #
+      # ⛔ Do not "promote" the live read into a gate. It is REPORT-ONLY by the
+      # ruling that admitted it: it ranks candidate rulings and names them, and
+      # WHICH candidate governs is a seat's reading and the maintainer's ruling
+      # (SKILL.md 〈升级与决策〉③). A blocking context over that judgement would
+      # be a required-set change, and the required set is the maintainer's.
+      #
+      # What the self-test instruments is the set of rules a clean tree cannot
+      # exercise: the term derivation's length floor, stopwords and code-span
+      # splitting (a backticked CLAUSE must not become a term); the
+      # governing-text carrier in both shapes the live board uses, plus the
+      # ABSENT case, which is 23 of its 27 open decision cards; word-boundary
+      # matching against the substring noise `git grep -iE` would drag in; the
+      # two decision shapes and the prose bullets the separator rule rejects;
+      # and status classification, which reads the FIRST status word rather than
+      # scanning for a retirement word anywhere in the line — two live accepted
+      # ADRs mention a later supersession/withdrawal of a sub-part, and
+      # precedence-scanning hides both from the pasted reading. Weakening any of
+      # them leaves an ordinary run just as green — it would simply surface
+      # fewer rulings, which is indistinguishable from a card that has none —
+      # and that is the shape `check:self-test-wired` requires this step for.
+      #
+      # It also carries ONE live-tree leg: the ADR-0131 D8 heading must still
+      # parse at the shape the reader expects, so a heading-format drift reds
+      # here instead of quietly shrinking every future candidate set. That leg
+      # reports `skipped` where no `origin/main` exists rather than passing —
+      # "could not check" is never rendered as "checked and clean".
+      #
+      # It imports `check-half-states.mjs` for the board resolver and the proxy
+      # re-exec plan — one source each, so this reader and the patrol cannot
+      # come to disagree about which board is read or how it is reached.
+      - name: Prior-ruling reader self-test
+        run: pnpm check:pm-prior-rulings
+
       # Stamped-post helper self-test (#17314) — the WRITE half of the rule that
       # a timestamp a seat writes into GitHub comes from a clock read by the act
       # that writes it. This tool POSTS: its live path mutates a card, so it is

package.json

@@ -79,6 +79,7 @@
     "check:pm-half-states": "node scripts/pm/check-half-states.mjs --self-test",
     "check:pm-clause2-carriers": "node scripts/pm/check-clause2-carriers.mjs --self-test",
     "check:pm-widening-tells": "node scripts/pm/check-widening-tells.mjs --self-test",
+    "check:pm-prior-rulings": "node scripts/pm/check-prior-rulings.mjs --self-test",
     "check:pm-closed-card-sweep": "node scripts/pm/sweep-closed-cards.mjs --self-test",
     "check:pm-post-stamped": "node scripts/pm/post-stamped.mjs --self-test",
     "check:pm-board-snapshot": "node scripts/pm/board-snapshot.mjs --self-test",