Linggui Bafa (靈龜八法) (靈龜八法)

靈龜八法 — the EIGHT METHODS OF THE SACRED TURTLE, the great chrono-arithmetic of classical Chinese medicine from Xu Feng's 針灸大全 (1439): at any double-hour ONE of the eight confluent points (八脈交會穴) — the gateways of the eight extraordinary vessels — is 'open', found by adding the day pillar's numbers to the hour pillar's, dividing by 9 on a yang day or 6 on a yin day, and reading the remainder on the eight-trigram wheel (坎1申脈, 坤2·5照海, 震3外關, 巽4足臨泣, 乾6公孫, 兌7後溪, 艮8內關, 離9列缺), the open point taken with its host-guest partner. SERVED AS HERITAGE, NOT MEDICINE: the payload's FIRST field is NOT_MEDICAL_ADVICE (the decumbiture precedent, enforced by test) — a Ming timing tradition computed for study, never treatment guidance. Number tables two-witness; the wheel corroborated 2-of-3 with one witness's shifted rendering OUTVOTED and recorded; vessels and the four host-guest pairs per standard 八脈交會 doctrine. THE LOAD-TIME ANCHORS ARE THE WITNESSES' OWN WORKED EXAMPLES — 甲子日子時 → 35 → 內關, 己酉日癸酉時 → 30 → 公孫 — the latter also proving the engine's 五子元遁 hour-stem derivation. Day pillar from the catalogue's shared lunar oracle; 早晚子時 disclosed; the sibling 飛騰八法 named as future work. Returns the arithmetic shown in full, the open point with vessel and partner, and the whole day's twelve-hour schedule. Pure compute, no LLM.

Cost: 2 TIAN Points per call. tRPC procedure linggui.hour.