chore: track claude skills, tools, templates, reference code and research-wiki

- Add all claude skills (brainstorming, commit, debugging, TDD, etc.)
- Add claude hooks (pre-commit-guard, post-edit-quality)
- Add research templates (experiment plan, research brief, etc.)
- Add claude tools (arxiv/semantic_scholar/openalex fetch, wiki, exa)
- Add TRM4 reference implementation as algorithm fidelity baseline
- Add research-wiki content (plans, index, graph, query_pack)
- Update .gitignore to exclude .graphify_version runtime state

reference/video_tree_trm/__init__.py

@@ -0,0 +1,29 @@
+"""
+Video-Tree-TRM 核心包
+=====================
+结合 TRM 多层对话探索能力与 PageIndex 树状检索能力的新型 Video RAG。
+"""
+
+from video_tree_trm.config import Config
+from video_tree_trm.embeddings import EmbeddingModel
+from video_tree_trm.llm_client import LLMClient
+from video_tree_trm.text_tree_builder import TextTreeBuilder
+from video_tree_trm.tree_index import (
+    IndexMeta,
+    L1Node,
+    L2Node,
+    L3Node,
+    TreeIndex,
+)
+
+__all__ = [
+    "Config",
+    "EmbeddingModel",
+    "LLMClient",
+    "TextTreeBuilder",
+    "IndexMeta",
+    "L1Node",
+    "L2Node",
+    "L3Node",
+    "TreeIndex",
+]