Drop real template library; keep CDN-only matching.

Remove build_library and runtime artifacts, ignore regenerable outputs, and add README/AGENTS/DESIGN/CHANGELOG for the simplified project.

Co-authored-by: Cursor <cursoragent@cursor.com>

common.py

@@ -8,7 +8,6 @@ import numpy as np
 
 ROOT = Path(__file__).parent
 CONFIG_PATH = ROOT / "config.json"
-TEMPLATES_REAL = ROOT / "templates" / "real"
 TEMPLATES_CDN = ROOT / "templates" / "cdn"
 
 
@@ -123,20 +122,13 @@ def has_ranked_overlay(img: np.ndarray, cfg: dict) -> bool:
     return checked > 0 and hits >= max(6, checked * 0.6)
 
 
-def load_template_library() -> list[tuple[str, str, np.ndarray]]:
-    """Return list of (hero_key, source, image). source is 'real' or 'cdn'."""
-    lib: list[tuple[str, str, np.ndarray]] = []
-    if TEMPLATES_REAL.is_dir():
-        for hero_dir in sorted(TEMPLATES_REAL.iterdir()):
-            if not hero_dir.is_dir():
-                continue
-            for png in hero_dir.glob("*.png"):
-                img = cv2.imread(str(png))
-                if img is not None:
-                    lib.append((hero_dir.name, "real", img))
-    if TEMPLATES_CDN.is_dir():
-        for png in TEMPLATES_CDN.glob("*.png"):
-            img = cv2.imread(str(png))
-            if img is not None:
-                lib.append((png.stem, "cdn", img))
+def load_template_library() -> list[tuple[str, np.ndarray]]:
+    """Return list of (hero_key, image) from Steam CDN portraits."""
+    lib: list[tuple[str, np.ndarray]] = []
+    if not TEMPLATES_CDN.is_dir():
+        return lib
+    for png in sorted(TEMPLATES_CDN.glob("*.png")):
+        img = cv2.imread(str(png))
+        if img is not None:
+            lib.append((png.stem, img))
     return lib