fix(deps): add agno[sqlite] extra to pull in sqlalchemy

agno ships sqlalchemy as an optional dependency under its `sqlite` extra.
Installing bare `agno` (without the extra) left sqlalchemy absent, causing
`ModuleNotFoundError: No module named 'sqlalchemy'` on `make dev`.

Changing the dependency spec from `agno>=1.4.0` to `agno[sqlite]>=1.4.0`
ensures sqlalchemy is installed automatically by `make install`.

Also added a troubleshooting entry to README.md for this error.

https://claude.ai/code/session_01W8jeKbHYNS75mPhGLYJxVq

README.md

@@ -223,6 +223,9 @@ Makefile              # Common dev commands
 
 **`connection refused` in chat** — run `ollama serve` in a separate terminal
 
+**`ModuleNotFoundError: No module named 'sqlalchemy'`** — re-run install to pick up the updated `agno[sqlite]` dependency:
+`make install`
+
 **`ModuleNotFoundError: No module named 'dashboard'`** — activate the venv:
 `source .venv/bin/activate && pip install -e ".[dev]"`
 

pyproject.toml

@@ -10,7 +10,7 @@ readme = "README.md"
 requires-python = ">=3.11"
 license = { text = "MIT" }
 dependencies = [
-    "agno>=1.4.0",
+    "agno[sqlite]>=1.4.0",
     "fastapi>=0.115.0",
     "uvicorn[standard]>=0.32.0",
     "jinja2>=3.1.0",