fix(ephemeris): alias the engine's three panchanga spellings to the table

Coordinator ruling (brief author, 2026-09-26): Aindra -> Indra (因陀罗),
Variyana -> Variyan (安逸), Dhanishtha -> Dhanishta (虚宿). Spelling aliases
only; the brief's table and its typed test copy are unchanged. BLOCKED item
struck through, PROGRESS / checklist / task index updated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017eEAG8HD3mm8gsKXgk8uU8

frontend/src/lib/panchanga-names-zh.ts

@@ -9,7 +9,10 @@
  *
  * Matching ignores case, spaces and hyphens. The three spelling aliases the
  * brief lists (Garija/Gara, Dwitiya/Dvitiya, Shashthi/Shashti) live in
- * `PANCHANGA_NAME_ALIASES`; no other alias is accepted.
+ * `PANCHANGA_NAME_ALIASES`, plus three the coordinator ruled on 2026-09-26 so
+ * the engine's own spellings (`scripts/muhurta.py`) reach the existing
+ * entries: Aindra → Indra, Variyana → Variyan, Dhanishtha → Dhanishta. These
+ * are spellings, not translations; no other alias is accepted.
  */
 
 export type PanchangaNameKind = "tithi" | "nakshatra" | "yoga" | "karana";
@@ -114,11 +117,14 @@ export const KARANA_ZH: Readonly<Record<string, string>> = {
   Kimstughna: "金斯图格纳",
 };
 
-/** Spelling alias → table key. Only the three pairs the brief names. */
+/**
+ * Spelling alias → table key. The brief's three pairs, plus the engine's three
+ * spellings (coordinator ruling 2026-09-26).
+ */
 export const PANCHANGA_NAME_ALIASES: Readonly<Record<PanchangaNameKind, Readonly<Record<string, string>>>> = {
   tithi: { Dvitiya: "Dwitiya", Shashti: "Shashthi" },
-  nakshatra: {},
-  yoga: {},
+  nakshatra: { Dhanishtha: "Dhanishta" },
+  yoga: { Aindra: "Indra", Variyana: "Variyan" },
   karana: { Gara: "Garija" },
 };
 

frontend/tests/panchanga-names-zh.test.ts

@@ -85,6 +85,21 @@ test("the three listed aliases resolve to the same entry", () => {
   assert.equal(panchangaNameZh("tithi", "Krishna Shashthi"), "黑分初六");
 });
 
+test("the engine's own spellings reach the existing entries (coordinator ruling 2026-09-26)", () => {
+  // `scripts/muhurta.py` spells these three differently from the brief's table.
+  // 原值：6de277a4 里断言这三个引擎拼法返回 null（照写梵文、待裁决）。
+  // 新值：映射到表内既有条目。
+  // 原因：协调方 2026-09-26 以任务书作者身份裁定补拼写别名，译名不变。
+  assert.equal(panchangaNameZh("yoga", "Aindra"), "因陀罗");
+  assert.equal(panchangaNameZh("yoga", "Indra"), "因陀罗");
+  assert.equal(panchangaNameZh("yoga", "Variyana"), "安逸");
+  assert.equal(panchangaNameZh("yoga", "Variyan"), "安逸");
+  assert.equal(panchangaNameZh("nakshatra", "Dhanishtha"), "虚宿");
+  assert.equal(panchangaNameZh("nakshatra", "Dhanishta"), "虚宿");
+  // An alias stays inside its own limb.
+  assert.equal(panchangaNameZh("nakshatra", "Aindra"), null);
+});
+
 test("case, spaces and hyphens are ignored", () => {
   assert.equal(normalizePanchangaName("Uttara-Bhadra pada"), "uttarabhadrapada");
   assert.equal(panchangaNameZh("nakshatra", "uttara bhadrapada"), "壁宿");
@@ -100,13 +115,6 @@ test("a name the table does not know returns null so the caller keeps the engine
   assert.equal(panchangaNameZh("karana", "Unknown"), null);
   // A yoga name is not looked up in another limb's table.
   assert.equal(panchangaNameZh("nakshatra", "Vriddhi"), null);
-  /* Engine spellings (`scripts/muhurta.py`) that the brief's table spells
-     differently. Not aliased here: the brief allows only the three aliases
-     above, so these stay in Sanskrit until the table is ruled on — see
-     PROGRESS-people-ephemeris-ui-20260926 「待裁决」. */
-  assert.equal(panchangaNameZh("yoga", "Aindra"), null);
-  assert.equal(panchangaNameZh("yoga", "Variyana"), null);
-  assert.equal(panchangaNameZh("nakshatra", "Dhanishtha"), null);
 });
 
 test("tithi split separates the fortnight from the day", () => {