Fast deploy (index 51f60c37cb32)

backend/app.py

@@ -125,11 +125,17 @@ def game_round(
 
 @app.post("/api/game/score")
 def game_score(body: dict) -> dict:
-    """Score a guess. Body: {round, bridge?, chain?} — pass the round payload from /api/game/round."""
+    """Score a guess. Body: {round, branch_a?, branch_b?} (legacy: bridge?, chain?)."""
     rnd = body.get("round") or {}
     if not rnd.get("answer"):
         raise HTTPException(400, "round.answer required")
-    return score_guess(rnd, body.get("bridge"), body.get("chain") or [])
+    return score_guess(
+        rnd,
+        body.get("branch_a"),
+        body.get("branch_b"),
+        bridge_guess=body.get("bridge"),
+        chain_guess=body.get("chain"),
+    )
 
 
 @app.post("/api/export")

backend/game.py

@@ -1,4 +1,4 @@
-"""Etymology link game: guess how two related words meet in the graph."""
+"""Etymology tree game: grow from a shared root toward known modern ends."""
 
 from __future__ import annotations
 
@@ -13,13 +13,19 @@ from backend.define import lookup_definitions
 ROOT = Path(__file__).resolve().parents[1]
 DECK_PATH = ROOT / "data" / "game" / "en_es_pairs.json"
 
-BRIDGE_CHOICES = [
-    "Latin",
-    "Old / Middle French",
+DISTRACTORS = [
     "Proto-Germanic",
-    "Proto-Indo-European",
-    "Ancient Greek",
+    "Latin",
+    "Old French",
+    "Middle English",
     "Old English",
+    "Old Spanish",
+    "Proto-Italic",
+    "Ancient Greek",
+    "Proto-Indo-European",
+    "Middle French",
+    "Proto-West Germanic",
+    "Old / Middle French",
 ]
 
 SEED_PAIRS: list[dict] = [
@@ -105,81 +111,92 @@ def _round_id(en: str, es: str) -> str:
     return hashlib.sha1(f"{en}\0{es}".encode()).hexdigest()[:12]
 
 
+def _branch_langs(atlas: Atlas, modern_to_lca: list[dict]) -> tuple[list[dict], list[str]]:
+    """Flip modern→LCA into root→end; return full path + intermediate language labels."""
+    if not modern_to_lca:
+        return [], []
+    root_to_end = list(reversed(modern_to_lca))
+    # Intermediates sit between root and the known modern leaf.
+    inter = root_to_end[1:-1] if len(root_to_end) > 2 else []
+    langs = [_display_lang(atlas, n["lang"]) for n in inter]
+    return [_pack_node(atlas, n) for n in root_to_end], langs
+
+
 def build_round(atlas: Atlas, en: str, es: str, *, source: str = "custom") -> dict:
     related = atlas.relate(en, "english", es, "spanish", max_depth=12)
     if not related.get("ok"):
         return {"ok": False, "error": related.get("error") or "unrelated", "en": en, "es": es}
 
-    path_a = related["path_a"]
-    path_b = related["path_b"]
+    path_a = related["path_a"]  # modern EN → LCA
+    path_b = related["path_b"]  # modern ES → LCA
     lca = related["lca"]
     bridge = _bridge_label(lca["lang"])
 
-    # Language hops after the modern word, including the shared ancestor language once.
-    langs_a = [_display_lang(atlas, n["lang"]) for n in path_a[1:]]
-    langs_b = [_display_lang(atlas, n["lang"]) for n in path_b[1:]]
-    a_only = langs_a[:-1] if langs_a else []
-    b_only = langs_b[:-1] if langs_b else []
-    answer_chain = a_only + [bridge] + list(reversed(b_only))
-
-    distractors = [
-        "Proto-Germanic",
-        "Latin",
-        "Old French",
-        "Middle English",
-        "Old English",
-        "Old Spanish",
-        "Proto-Italic",
-        "Ancient Greek",
-        "Proto-Indo-European",
-        "Middle French",
-        "Proto-West Germanic",
-        "Old / Middle French",
-    ]
-    needed = list(dict.fromkeys(answer_chain))
-    pool = list(dict.fromkeys([*needed, *distractors]))
+    path_root_a, branch_a = _branch_langs(atlas, path_a)
+    path_root_b, branch_b = _branch_langs(atlas, path_b)
+    if not branch_a and not branch_b:
+        return {"ok": False, "error": "trivial_path", "en": en, "es": es}
+
+    needed = list(dict.fromkeys([*branch_a, *branch_b]))
+    pool = list(dict.fromkeys([*needed, *DISTRACTORS]))
     rng = random.Random(_round_id(en, es))
-    # Keep all needed + a few distractors
     extras = [p for p in pool if p not in needed]
     rng.shuffle(extras)
-    pool = needed + extras[:4]
-    rng.shuffle(pool)
-
-    opts = [bridge]
-    for c in BRIDGE_CHOICES:
-        if c not in opts:
-            opts.append(c)
-        if len(opts) >= 4:
-            break
-    rng.shuffle(opts)
+    chip_pool = needed + extras[:4]
+    rng.shuffle(chip_pool)
 
     a = related["a"]
     b = related["b"]
+    root = {
+        **_pack_node(atlas, lca),
+        "bridge": bridge,
+        "gloss": _gloss(atlas, lca["term"], lca["lang"]),
+    }
+    end_a = {
+        "term": a["term"],
+        "lang": a["lang"],
+        "lang_display": a.get("lang_display") or "English",
+        "gloss": _gloss(atlas, a["term"], a["lang"]),
+    }
+    end_b = {
+        "term": b["term"],
+        "lang": b["lang"],
+        "lang_display": b.get("lang_display") or "Spanish",
+        "gloss": _gloss(atlas, b["term"], b["lang"]),
+    }
+
     return {
         "ok": True,
         "id": _round_id(en, es),
         "source": source,
-        "a": {
-            "term": a["term"],
-            "lang": a["lang"],
-            "lang_display": a.get("lang_display") or "English",
-            "gloss": _gloss(atlas, a["term"], a["lang"]),
-        },
-        "b": {
-            "term": b["term"],
-            "lang": b["lang"],
-            "lang_display": b.get("lang_display") or "Spanish",
-            "gloss": _gloss(atlas, b["term"], b["lang"]),
+        "mode": "root_tree",
+        "root": root,
+        "end_a": end_a,
+        "end_b": end_b,
+        # Back-compat aliases used by older UI bits / atlas open buttons
+        "a": end_a,
+        "b": end_b,
+        "branch_a_slots": len(branch_a),
+        "branch_b_slots": len(branch_b),
+        "slot_count": len(branch_a) + len(branch_b),
+        "chip_pool": chip_pool,
+        "help": {
+            "prompt": "Start at the shared root and grow each branch toward the modern word you already know.",
+            "a_hops": len(branch_a),
+            "b_hops": len(branch_b),
+            "tip": f"Both words descend from {bridge}. Place the language hops on each arm of the tree.",
         },
-        "bridge_choices": opts,
-        "slot_count": len(answer_chain),
-        "chip_pool": pool,
         "answer": {
             "bridge": bridge,
-            "chain": answer_chain,
-            "lca": {**_pack_node(atlas, lca), "bridge": bridge},
-            "path_a": [_pack_node(atlas, n) for n in path_a],
-            "path_b": [_pack_node(atlas, n) for n in path_b],
+            "branch_a": branch_a,
+            "branch_b": branch_b,
+            # Legacy flat chain kept for debugging; scoring uses branch_a/b.
+            "chain": branch_a + [bridge] + list(reversed(branch_b)),
+            "lca": root,
+            "path_a": path_root_a,  # root → English
+            "path_b": path_root_b,  # root → Spanish
+            "path_a_up": [_pack_node(atlas, n) for n in path_a],  # modern → root (atlas-style)
+            "path_b_up": [_pack_node(atlas, n) for n in path_b],
         },
     }
 
@@ -187,7 +204,7 @@ def build_round(atlas: Atlas, en: str, es: str, *, source: str = "custom") -> di
 def next_round(atlas: Atlas, *, avoid: set[str] | None = None) -> dict:
     deck = _load_deck()
     avoid = avoid or set()
-    # Prefer pedagogical pairs (seed / IE-CoR) over opportunistic Latin-root samples.
+
     def priority(p: dict) -> int:
         src = p.get("source") or ""
         if src == "seed":
@@ -197,13 +214,13 @@ def next_round(atlas: Atlas, *, avoid: set[str] | None = None) -> dict:
         return 2
 
     ranked = sorted(deck, key=priority)
-    buckets = {0: [], 1: [], 2: []}
+    buckets: dict[int, list[dict]] = {0: [], 1: [], 2: []}
     for p in ranked:
         rid = _round_id(p["en"], p["es"])
         if rid in avoid:
             continue
         buckets[priority(p)].append(p)
-    # Weighted draw: mostly seed/iecor
+
     pool: list[dict] = []
     pool.extend(buckets[0] * 3)
     pool.extend(buckets[1] * 2)
@@ -211,8 +228,9 @@ def next_round(atlas: Atlas, *, avoid: set[str] | None = None) -> dict:
     if not pool:
         pool = list(deck)
     random.shuffle(pool)
+
     last_err = "empty_deck"
-    for p in pool[:60]:
+    for p in pool[:80]:
         rnd = build_round(atlas, p["en"], p["es"], source=p.get("source") or "deck")
         if rnd.get("ok"):
             return rnd
@@ -220,21 +238,50 @@ def next_round(atlas: Atlas, *, avoid: set[str] | None = None) -> dict:
     return {"ok": False, "error": last_err}
 
 
-def score_guess(round_payload: dict, bridge_guess: str | None, chain_guess: list[str] | None) -> dict:
+def score_guess(
+    round_payload: dict,
+    branch_a_guess: list[str] | None = None,
+    branch_b_guess: list[str] | None = None,
+    *,
+    # Back-compat with older clients that sent bridge + linear chain
+    bridge_guess: str | None = None,
+    chain_guess: list[str] | None = None,
+) -> dict:
     ans = round_payload.get("answer") or {}
-    true_bridge = ans.get("bridge") or ""
-    true_chain = ans.get("chain") or []
-    bridge_ok = (bridge_guess or "").strip() == true_bridge
-    chain = list(chain_guess or [])
-    n = len(true_chain)
-    correct_slots = sum(1 for i in range(n) if i < len(chain) and chain[i] == true_chain[i])
-    chain_ok = chain[:n] == true_chain and len(chain) >= n
+    true_a = list(ans.get("branch_a") or [])
+    true_b = list(ans.get("branch_b") or [])
+
+    if branch_a_guess is None and chain_guess is not None:
+        # Legacy: chain was EN-up … bridge … ES-down. Recover arms if possible.
+        bridge = ans.get("bridge") or ""
+        chain = list(chain_guess)
+        if bridge in chain:
+            i = chain.index(bridge)
+            branch_a_guess = list(reversed(chain[:i]))
+            branch_b_guess = chain[i + 1 :]
+        else:
+            branch_a_guess = []
+            branch_b_guess = []
+
+    guess_a = list(branch_a_guess or [])
+    guess_b = list(branch_b_guess or [])
+    correct_a = sum(1 for i, lab in enumerate(true_a) if i < len(guess_a) and guess_a[i] == lab)
+    correct_b = sum(1 for i, lab in enumerate(true_b) if i < len(guess_b) and guess_b[i] == lab)
+    n = len(true_a) + len(true_b)
+    correct_slots = correct_a + correct_b
+    branches_ok = guess_a[: len(true_a)] == true_a and guess_b[: len(true_b)] == true_b
+    bridge = ans.get("bridge") or ""
+    bridge_ok = True if bridge_guess is None else (bridge_guess or "").strip() == bridge
+
     return {
         "bridge_ok": bridge_ok,
-        "chain_ok": chain_ok,
+        "chain_ok": branches_ok,
+        "branches_ok": branches_ok,
         "correct_slots": correct_slots,
+        "correct_a": correct_a,
+        "correct_b": correct_b,
         "slot_count": n,
-        "score": int(bridge_ok) + correct_slots,
-        "max_score": 1 + n,
+        "score": correct_slots,
+        "max_score": max(n, 1),
         "answer": ans,
     }

frontend/dist/assets/index-BZiYT1q0.css

@@ -0,0 +1 @@
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svg{-moz-user-select:none}.leaflet-pane{z-index:400}.leaflet-tile-pane{z-index:200}.leaflet-overlay-pane{z-index:400}.leaflet-shadow-pane{z-index:500}.leaflet-marker-pane{z-index:600}.leaflet-tooltip-pane{z-index:650}.leaflet-popup-pane{z-index:700}.leaflet-map-pane canvas{z-index:100}.leaflet-map-pane svg{z-index:200}.leaflet-vml-shape{width:1px;height:1px}.lvml{behavior:url(#default#VML);display:inline-block;position:absolute}.leaflet-control{position:relative;z-index:800;pointer-events:visiblePainted;pointer-events:auto}.leaflet-top,.leaflet-bottom{position:absolute;z-index:1000;pointer-events:none}.leaflet-top{top:0}.leaflet-right{right:0}.leaflet-bottom{bottom:0}.leaflet-left{left:0}.leaflet-control{float:left;clear:both}.leaflet-right .leaflet-control{float:right}.leaflet-top .leaflet-control{margin-top:10px}.leaflet-bottom .leaflet-control{margin-bottom:10px}.leaflet-left .leaflet-control{margin-left:10px}.leaflet-right .leaflet-control{margin-right:10px}.leaflet-fade-anim 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li{margin-bottom:8px;display:flex;flex-direction:column;gap:2px}.game-paths span{color:var(--muted);font-size:13px}.game-lca{margin-top:14px;color:var(--muted)}.game-lca b{color:var(--copper)}.game-result{color:var(--teal);margin:0 0 8px}.game-custom{display:grid;grid-template-columns:1fr 1fr auto;gap:10px;align-items:start;margin-top:10px}.game-custom input{width:100%;background:var(--ink-3);border:1px solid var(--line);border-radius:10px;padding:10px 12px}.game-mini-suggest{display:flex;flex-direction:column;gap:4px;margin-top:6px}.game-mini-suggest button{text-align:left;background:var(--ink-3);border:1px solid var(--line);border-radius:8px;padding:6px 10px;font-size:13px}@media(max-width:840px){.game{padding:16px 14px 40px}.game-pair{grid-template-columns:1fr}.game-link{display:none}.game-paths,.game-custom,.game-tree-arms{grid-template-columns:1fr}}.game-help{max-width:860px;color:var(--muted);margin:0 0 16px;font-size:14px}.game-tree{max-width:920px;margin:0 0 18px;padding:18px 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transparent;border-radius:12px;padding:10px;cursor:pointer;transition:border-color .15s,background .15s}.game-tree-arm.active{border-color:#3cb8c473;background:#3cb8c40f}.game-arm-label{display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px}.game-branch-slots{display:flex;flex-direction:column;gap:8px;margin-bottom:10px;min-height:44px}.game-branch-slots.empty{justify-content:center}.game-direct{color:var(--muted);font-size:12px;font-style:italic}.game-tree-slot{display:grid;grid-template-columns:auto 1fr;gap:8px;align-items:center;text-align:left;padding:10px 12px;border-radius:10px;border:1px dashed var(--line);background:#0000002e;color:var(--parchment);min-height:44px}.game-tree-slot.filled{border-style:solid;border-color:#3cb8c459;background:#3cb8c41a}.game-tree-slot.ok{border-color:#50c8788c}.game-tree-slot.bad{border-color:#dc5a5a8c}.game-slot-idx{width:1.4em;height:1.4em;border-radius:999px;display:inline-grid;place-items:center;font-size:11px;color:var(--ink);background:var(--teal)}.game-slot-fix{grid-column:1 / -1;font-size:12px;color:var(--copper)}.game-tree-leaf{padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:var(--ink);display:flex;flex-direction:column;gap:4px}.game-tree-leaf strong{font-family:var(--display);font-size:22px}.game-pool{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}.game-pool button{border:1px solid var(--line);background:var(--ink);color:var(--parchment);border-radius:999px;padding:8px 12px;cursor:pointer}.game-pool button:hover{border-color:var(--teal);color:var(--teal)}

frontend/dist/index.html

@@ -9,8 +9,8 @@
     <link rel="icon" href="/icon.svg" type="image/svg+xml" />
     <link rel="apple-touch-icon" href="/icon.svg" />
     <title>Reverse Etymology Atlas</title>
-    <script type="module" crossorigin src="/assets/index-CSxQdCV8.js"></script>
-    <link rel="stylesheet" crossorigin href="/assets/index-Dr1iPrLq.css">
+    <script type="module" crossorigin src="/assets/index-DKpy9n2O.js"></script>
+    <link rel="stylesheet" crossorigin href="/assets/index-BZiYT1q0.css">
   </head>
   <body>
     <div id="root"></div>