Scaffold bggpipe: typer CLI, config loading, title normalization

uv project with typer/httpx/rapidfuzz, ruff and pytest wired into
pyproject. Six stub subcommands matching the pipeline stages, config.toml
plus BGG_USERNAME env override, accent/ampersand/article-safe title
normalization with tests.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

tests/test_normalize.py

@@ -0,0 +1,25 @@
+from bggpipe.normalize import normalize_title
+
+
+def test_casefold_and_punctuation():
+    assert normalize_title("Wingspan: European Expansion") == (
+        "wingspan european expansion"
+    )
+
+
+def test_accents_stripped():
+    assert normalize_title("Café International") == "cafe international"
+
+
+def test_ampersand_becomes_and():
+    assert normalize_title("Axis & Allies") == "axis and allies"
+    assert normalize_title("Axis and Allies") == "axis and allies"
+
+
+def test_articles_dropped():
+    assert normalize_title("The Castles of Burgundy") == "castles of burgundy"
+    assert normalize_title("A Feast for Odin") == "feast for odin"
+
+
+def test_whitespace_collapsed():
+    assert normalize_title("  Ticket   to Ride ") == "ticket to ride"