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_extract.py

@@ -260,6 +260,62 @@ def test_removals_filter_rebuilds_photo_scoped():
     ]
 
 
+def test_hand_added_titles_survive_rebuilds_and_merge_with_sightings(tmp_path):
+    from bggpipe.extract import record_title_addition
+
+    cfg = Config(data_dir=tmp_path / "data", photos_dir=tmp_path / "photos")
+    raw = cfg.extract_raw_dir
+    raw.mkdir(parents=True)
+    (raw / "a.jpg.json").write_text(
+        json.dumps({"titles": [_entry("Catan", "a.jpg")], "unidentified": []})
+    )
+    record_title_addition(
+        cfg.title_additions_path,
+        {
+            "title_raw": "Wingspan: European Expansion",
+            "confidence": "high",
+            "publisher_hint": "Stonemaier Games",
+            "edition_hint": "",
+            "year_hint": None,
+            "language_hint": "",
+            "art_notes": "",
+            "source_photos": [],
+        },
+    )
+    replay_titles(cfg)
+    titles = {e["title_raw"] for e in json.loads(cfg.titles_path.read_text())}
+    assert titles == {"Catan", "Wingspan: European Expansion"}
+    # a later photo SEES the expansion: the sighting merges, no duplicate
+    (raw / "b.jpg.json").write_text(
+        json.dumps(
+            {
+                "titles": [
+                    _entry(
+                        "Wingspan: European Expansion",
+                        "b.jpg",
+                        publisher_hint="Stonemaier Games",
+                    )
+                ],
+                "unidentified": [],
+            }
+        )
+    )
+    replay_titles(cfg)
+    expansion = [
+        e
+        for e in json.loads(cfg.titles_path.read_text())
+        if e["title_raw"] == "Wingspan: European Expansion"
+    ]
+    assert len(expansion) == 1
+    assert expansion[0]["source_photos"] == ["b.jpg"]  # photo provenance won
+    # re-recording the same title is a no-op
+    record_title_addition(
+        cfg.title_additions_path,
+        {"title_raw": "WINGSPAN EUROPEAN EXPANSION", "source_photos": []},
+    )
+    assert len(json.loads(cfg.title_additions_path.read_text())) == 1
+
+
 def test_stores_roundtrip_and_replay_from_raw(tmp_path):
     cfg = Config(data_dir=tmp_path / "data", photos_dir=tmp_path / "photos")
     raw = cfg.extract_raw_dir