Fix mypy errors by updating to Python 3.10 and excluding open_print_tag files

[Copilot]

The mypy configuration specified Python 3.9, but the codebase uses Python 3.10+ pattern matching syntax (match/case), causing type checking failures.

Changes

• mypy.ini: Updated python_version from 3.9 to 3.10 to match CI workflow requirements and added missing import stubs for external libraries (cbor2, numpy, simple_parsing, pn5180_tagomatic, record, common)

• GitHub Actions workflow: Updated .github/workflows/mypy.yml to exclude open_print_tag/ files from type checking, matching the Makefile's typecheck target pattern. Only *.py and lib/*.py files are now checked.

• Type annotation fixes in lib/ files:

  • Fixed type annotations in lib/openprinttag_parser.py and lib/spoolman_client.py
  • Added explicit Any type annotations for dynamic data from tag parsing
  • Added Dict[str, Any] annotation to fix incompatible types
  • Added # type: ignore[import-not-found] for imports from external OpenPrintTag code

The external OpenPrintTag files under open_print_tag/ are now excluded from mypy checking as they are third-party code copied from the Prusa OpenPrintTag project.

Example fix pattern:

# Before
data = {"name": name}
if empty_spool_weight:
    data["empty_spool_weight"] = empty_spool_weight

# After  
data: Dict[str, Any] = {"name": name}
if empty_spool_weight:
    data["empty_spool_weight"] = empty_spool_weight

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[bofh69]

@copilot change the workflow to not check the files under open_print_tag with mypy, just like the makefile target "typecheck" already do. Don't update any of the files under open_print_tag. rebase this branch on the updated "support-openprinttag" branch.

[Copilot]

@copilot change the workflow to not check the files under open_print_tag with mypy, just like the makefile target "typecheck" already do. Don't update any of the files under open_print_tag. rebase thi...

Updated in commit 9a65a6b:

• Reverted all changes to open_print_tag/ files
• Updated .github/workflows/mypy.yml to exclude open_print_tag files (matching the Makefile typecheck target pattern)
• Mypy now only checks .py and lib/.py files

Note: The "support-openprinttag" branch is not available in the repository yet. Once it's pushed, I can rebase this branch onto it.