perf: ROUTE_AND_REWRITE_PROMPT 合并提示

perf: 删 query_rewrite 节点, route→retrieve

perf: route+query_rewrite 合并为单次 LLM

perf: auto_title 后台 + _deferred_tasks

perf: enable_colbert 默认 False

chore: huggingface_hub delete_patterns note

fix: session delete reorder+sync push

fix: delete_document reorder+sync push

fix: upload_folder delete_patterns clear remote

fix: cleanup orphan file on ingest_failed

feat: markdown upload support — app/config.py

feat: markdown upload support — app/services/ingestion.py

feat: markdown upload support — app/services/parsers/__init__.py

feat: markdown upload support — app/services/parsers/markdown_parser.py

fix: CHROMA_PERSIST_DIR=/data/chroma (was writing to /app/data/chroma temp layer)

fix: persist push chroma/ via hf_hub fallback

fix: restore colbert/ + persist after chat

fix: restore colbert/ + persist after chat

fix: restore colbert/ + persist after chat

bump version to 1.0.0

bump version to 1.0.0

fix(backend): db.py session_upsert now uses COALESCE for title (was missing)

fix(backend): schemas.py now has SessionCreate and SessionUpdate (was missing)

fix(backend): sessions.py now has _auto_title function

fix(backend): add session auto_title from first user message

fix: persist verify also checks colbert/ (ENABLE_COLBERT=true puts data there)

fix: persist A 改良版 (verify + 5s debounce + sync push for upload)

fix: independent persist executor + reset pending_push on failure

chore: upload app/services/vector_store.py

chore: upload app/services/embedding.py

chore: upload app/services/reranker.py

chore: upload app/services/chunking.py

chore: upload app/services/ingestion.py

chore: upload app/api/chat.py

chore: upload app/api/__init__.py

chore: upload app/api/documents.py

chore: upload app/api/health.py

chore: upload app/api/sessions.py

chore: upload app/streaming/sse.py

chore: upload app/streaming/__init__.py

chore: upload app/streaming/events.py

chore: upload app/models/schemas.py

chore: upload app/models/__init__.py

chore: upload app/models/db.py

chore: upload app/agents/state.py

chore: upload app/agents/nodes.py

chore: upload app/agents/prompts.py

chore: upload app/agents/__init__.py

chore: upload app/agents/graph.py

chore: upload app/agents/tools.py