feat: add comprehensive agent system with memory, planning, and tool use

This commit introduces a full-featured agent architecture including persistent memory storage using vector embeddings, multi-step planning capabilities with dynamic replanning, and an extensible tool registry supporting custom function definitions. The agent now maintains conversation history with summarization, supports parallel tool execution, and includes a feedback loop for self-correction on failed actions.

.gitignore

@@ -1,14 +1,24 @@
+.cache
+.local
+.devplace_bots/
 __pycache__/
 *.py[cod]
 *.egg-info/
 .env
 devplace.db*
 devplace-services.lock
+devplace-init.lock
+.vapid.lock
 notification-private.pem
 notification-private.pkcs8.pem
 notification-public.pem
 .pytest_cache/
 .opencode
+devii_*.db
+devii_*.db-shm
+devii_*.db-wal
+devii.log
+webdata/
 devplacepy/static/uploads/attachments/
 devplacepy/static/uploads/*.png
 devplacepy/static/uploads/*.jpg