Install tagstr_site to playground

[koxudaxi]

The PR adds tagstr_site package to playground. We can do import tagstr_site in jupyterlite.

I deployed the PR to my GitHub pages I have test it in my namespace on GitHub pages. It works fine :) https://koxudaxi.github.io/tagstr-site/playground/lab/index.html

[davepeck]

@koxudaxi

When running make build-playground I see:

TaskError - taskid:post_build:contents:contents:.
PythonAction Error
Traceback (most recent call last):
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/doit/action.py", line 461, in execute
    returned_value = self.py_callable(*self.args, **kwargs)
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/jupyterlite_core/addons/contents.py", line 159, in one_contents_path
    from jupyter_server.services.contents.filemanager import FileContentsManager
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/jupyter_server/services/contents/filemanager.py", line 22, in <module>
    import nbformat
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/nbformat/__init__.py", line 14, in <module>
    from . import v1, v2, v3, v4
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/nbformat/v4/__init__.py", line 24, in <module>
    from .convert import downgrade, upgrade
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/nbformat/v4/convert.py", line 12, in <module>
    from nbformat import v3, validator
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/nbformat/validator.py", line 17, in <module>
    from .json_compat import ValidationError, _validator_for_name, get_current_validator
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/nbformat/json_compat.py", line 13, in <module>
    import jsonschema
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/jsonschema/__init__.py", line 13, in <module>
    from jsonschema._format import FormatChecker
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/jsonschema/_format.py", line 11, in <module>
    from jsonschema.exceptions import FormatError
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/jsonschema/exceptions.py", line 14, in <module>
    from attrs import define
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/attrs/__init__.py", line 3, in <module>
    from attr import (
    ...<19 lines>...
    )
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/attr/__init__.py", line 10, in <module>
    from . import converters, exceptions, filters, setters, validators
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/attr/converters.py", line 10, in <module>
    from ._compat import _AnnotationExtractor
  File "/workspaces/tagstr-site/.venv/lib/python3.14/site-packages/attr/_compat.py", line 31, in <module>
    import annotationlib
ModuleNotFoundError: No module named 'annotationlib'

make: *** [Makefile:24: build-playground] Error 2

I know this is a build-with-3.12 vs with-3.14 issue, not technically related to this PR (it happens in the main branch too) but this feels like a good place to fix it? annotationlib is a PEP 749 thing, apparently.

[koxudaxi]

@davepeck I didn't know the problem. because I use python 3.12 to build the playground. I guess few libraries support Python3.14 yet. I'm fixing the error now.