feat(v3): PR 3 — prompt_layer package (base, video_prompt, search_query, visual_vocabulary)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

bots/prompt_layer/__init__.py

@@ -0,0 +1,43 @@
+"""
+bots/prompt_layer/__init__.py
+Unified entry point for all prompt composition.
+
+V3.0 scope: video + search + tts categories
+V3.1+: expand to all categories
+"""
+from .base import ComposedPrompt
+from .video_prompt import KlingPromptFormatter, VeoPromptFormatter
+from .search_query import StockSearchQueryComposer
+
+
+def compose(category: str, input_data: dict, engine: str) -> 'ComposedPrompt':
+    """
+    Unified entry point for all prompt composition.
+
+    category: 'video' | 'search' | 'tts' | 'image' | 'writing' | 'caption'
+    input_data: category-specific dict
+    engine: target engine name
+
+    V3.0 scope: video + search only
+    V3.1+: expand to all categories
+    """
+    composer = _get_composer(category, engine)
+    return composer.compose(input_data, engine)
+
+
+def _get_composer(category: str, engine: str):
+    """Return appropriate composer for category+engine combination."""
+    if category == 'video':
+        if engine in ('kling_free', 'kling_pro'):
+            return KlingPromptFormatter()
+        else:
+            return VeoPromptFormatter()
+    elif category == 'search':
+        return StockSearchQueryComposer()
+    else:
+        # Fallback: return a passthrough composer for unsupported categories
+        from .base import PassthroughComposer
+        return PassthroughComposer()
+
+
+__all__ = ['compose', 'ComposedPrompt']