Add a game by hand: the fourth curation store

BGG wants base game and expansion as separate collection entries, but
a box that stores its expansion's bits shows one spine to the camera —
the hidden half was unreachable. "add a game" on the Titles page
records an entry in data/title_additions.json (committed, like every
curation store), joined into every rebuild BEFORE edits and dedupe: so
corrections apply to it, a later photo sighting of the same game
merges instead of duplicating (photo provenance wins), and re-adding
an existing title is a no-op. Photo-less lines show an "added by hand"
chip where their photo links would be; from resolve onward they are
ordinary titles.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016jXZFSTZQKzAC8fqpWSz9g

tests/test_webreview.py

@@ -1139,3 +1139,24 @@ def test_local_decision_via_web(tmp_path):
     saved = {r["title_raw"]: r for r in read_matches(cfg.matches_path)}
     assert saved["Mystery"]["match_status"] == "local"
     assert state["summary"]["local"] == 1
+
+
+def test_add_title_by_hand(tmp_path):
+    web, cfg = make_client(tmp_path)
+    res = web.post(
+        "/api/add-title",
+        json={"title": "Wingspan: European Expansion", "publisher": "Stonemaier Games"},
+    )
+    assert res.status_code == 200
+    line = next(
+        c
+        for c in res.json()["catalog"]
+        if c["title_raw"] == "Wingspan: European Expansion"
+    )
+    assert line["status"] == "awaiting_resolve"
+    assert line["photos"] == []  # no photo — shown as added by hand
+    assert web.post("/api/add-title", json={"title": "   "}).status_code == 400
+    assert (
+        web.post("/api/add-title", json={"title": "X", "year": "199Y"}).status_code
+        == 400
+    )