Add Report Generation to PDF

[olivia-banks]

Added a report generation button that uses the browser's native functionality to produce a PDF, triggered by a button.

[olivia-banks]

This has a ton of extra changes because it's based off of #17; the requisite changes are located in:

./src/epicc/__main__.py
./src/epicc/utils/export.py
./src/epicc/web/sidebar.css

[Copilot]

Pull request overview

This PR adds a Streamlit “Export Results as PDF” button (via browser print) and introduces print-specific CSS so results can be saved cleanly as a PDF. It also restructures the app into a src/epicc package with new config/model/formats abstractions, plus adds tests for the new formats/model-loading utilities.

Changes:

• Add export/print flow backed by session state plus @media print CSS rules to hide Streamlit chrome.
• Refactor the app into src/epicc with new config loading, model base classes, parameter loaders/UI helpers, and built-in model implementations.
• Add a new epicc.formats layer (YAML/XLSX + template generation) and corresponding pytest coverage.

Reviewed changes

Copilot reviewed 38 out of 45 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
utils/section_renderer.py	Removed legacy top-level Streamlit section renderer (migrated into package).
utils/parameter_ui.py	Removed legacy sidebar parameter UI helpers (migrated into package).
utils/parameter_loader.py	Removed legacy param loader (replaced by new formats + loader in package).
utils/model_loader.py	Removed legacy dynamic model discovery/loader (replaced by built-in registry).
styles/sidebar.css	Removed old CSS file (moved into package web assets).
tests/epicc/test_model_loader.py	Adds tests for epicc.model.load_model.
tests/epicc/test_formats.py	Adds tests for format selection + typed reads.
tests/epicc/test_formats_yaml.py	Adds unit tests for YAMLFormat read/write.
tests/epicc/test_formats_xlsx.py	Adds unit tests for XLSXFormat read/write.
tests/epicc/test_formats_template.py	Adds integration tests for template generation to YAML/XLSX.
src/epicc/web/sidebar.css	Adds sidebar styling plus print CSS to hide UI chrome and improve PDF output.
src/epicc/utils/section_renderer.py	Reintroduces section rendering in the epicc package with block-type dispatch.
src/epicc/utils/parameter_ui.py	Reintroduces parameter sidebar renderer/reset logic in the epicc package.
src/epicc/utils/parameter_loader.py	New param loader using epicc.formats and a flattening adapter for sidebar UI.
src/epicc/utils/model_loader.py	Defines built-in model registry returning TB + measles model instances.
src/epicc/utils/export.py	Implements session-state driven “Export Results as PDF” button and print trigger injection.
src/epicc/utils/excel_model_runner.py	Refactors imports/formatting; reuses shared flatten_dict.
src/epicc/models/tb_isolation.yaml	Adds default parameter YAML for the TB Isolation model.
src/epicc/models/tb_isolation.py	Adds packaged TB Isolation Python model implementing BaseSimulationModel.
src/epicc/models/measles_outbreak.yaml	Adds default parameter YAML for the Measles Outbreak model.
src/epicc/models/measles_outbreak.py	Adds packaged Measles Outbreak Python model implementing BaseSimulationModel.
src/epicc/model/schema.py	Introduces Pydantic schema for declarative YAML-based models.
src/epicc/model/base.py	Introduces BaseSimulationModel ABC for Python-defined models.
src/epicc/model/init.py	Adds load_model() wrapper for reading/validating YAML model configs.
src/epicc/formats/yaml.py	Adds YAML format reader/writer implementation.
src/epicc/formats/xlsx.py	Adds XLSX format reader/writer implementation including dot-notation nesting.
src/epicc/formats/template.py	Adds template generation from Pydantic models (placeholders + defaults).
src/epicc/formats/base.py	Adds BaseFormat abstraction for parameter/model file IO.
src/epicc/formats/init.py	Adds format registry + read_from_format() validation wrapper.
src/epicc/config/schema.py	Adds typed config schema.
src/epicc/config/default.yaml	Adds default app configuration YAML.
src/epicc/config/init.py	Adds config loader and global CONFIG singleton.
src/epicc/main.py	Replaces app.py with packaged Streamlit entrypoint and export integration.
sample/TB Isolation.xlsx	Adds sample Excel workbook (binary) for TB isolation.
sample/Measles Outbreak.xlsx	Adds sample Excel workbook (binary) for measles outbreak.
sample/~$TB Isolation.xlsx	Adds an Excel temporary lock file (binary/PII).
pyproject.toml	Updates dependencies (pydantic/ruamel/pytest) and pytest configuration.
models/tb_isolation.py	Removes legacy standalone TB isolation model module.
models/measles_outbreak.py	Removes legacy standalone measles model module.
config/paths.yaml	Removes legacy config file.
config/global_defaults.yaml	Removes legacy config file.
config/app.yaml	Removes legacy config file.
app.py	Removes legacy top-level Streamlit app entrypoint (replaced by src/epicc/__main__.py).
.gitignore	Expands ignore patterns (venv, build artifacts, editor files, etc.).

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[olivia-banks]

Blocked by #17.