feat(demo): replace flowchart LR with packet-beta for filename convention

fix(notebook): use mo.mermaid() for convention diagram

docs(notebook): replace static IGS image with Mermaid convention diagram

chore(gitignore): exclude coverage runtime artifacts

docs(readme): reorder badges to match canvodpy README

docs(readme): add badges, affiliation, contributing, CAUTION note

chore: add pyproject.toml, uv.lock, .python-version for standalone use

canvodpy-demo: add README with 20-notebook table and usage instructions

docs: add README

chore: deleted doubled notebook

refactor: renumber notebooks and fix 01_naming_convention

docs(demo): rename zenith→polar angle; expand temporal aggregation guide

feat(demo): replace demo notebooks with 19 runtime-verified pipeline walkthroughs

refactor(data): centralize test data paths via _paths.py

fix(theme): improve light-mode contrast and add reduced-motion