feat: add Tailwind CSS pipeline, tag-aware cloning & CI/CD

[filipchristiansen]

Theme	Highlights
Front-end	• Introduces TailwindCSS • site.css compiled in CI • New icon set + favicon pack • Splits huge inline JS into /static/js/*.js modules
Docker	• 3-stage build (node:20-alpine ➜ python:3.12-slim ➜ runtime) • Copies compiled CSS into final layer
Core library	• Ingest pipeline now recognises git tags in addition to branches & commits • Compat helpers for Py 3.8 (readlink, removesuffix)
CI / CD	• ci.yml caches by pyproject.toml, installs with pip -e .[dev] • New frontend job builds & uploads CSS artefact • publish.yml builds Tailwind ➜ wheel/sdist ➜ PyPI upload
Packaging	• [dev] replaces requirements-dev.txt
Docs	• CONTRIBUTING.md (Node ≥18 instructions, CSS build)

[Copilot]

Pull Request Overview

Introduces a Tailwind CSS build pipeline, adds tag-aware clone and parsing logic, and enhances CI/CD workflows.

• Integrates Tailwind CSS into the frontend, extracts inline scripts into static JS modules, and sets up a Docker multi-stage build.
• Extends URL parsing and clone utilities to recognize Git tags alongside branches and commits.
• Revamps GitHub Actions and Docker workflows to build CSS, cache dependencies, publish artifacts, and deploy the Python package.

Reviewed Changes

Copilot reviewed 37 out of 51 changed files in this pull request and generated 1 comment.

Show a summary per file

File(s)	Description
tests/query_parser/*.py	Updated tests for tag field; removed outdated branch-fallback tests
tests/conftest.py	Updated mocks to use new fetch_remote_branches_or_tags
src/static/js/	Extracted inline scripts into dedicated modules; added PostHog, navbar, git form, and git logic
src/static/css/tailwind.css	Added custom utility classes and components
src/server/templates/**/*.jinja	Moved inline JS to static files; updated layout for badges, favicons, and scripts
src/server/query_processor.py	Changed error handling to return raw exception text
src/gitingest/utils/git_utils.py	Renamed and enhanced branch/tag fetch with ref_type
src/gitingest/utils/compat_func.py	Added Python 3.8 compatibility helpers (readlink, removesuffix)
src/gitingest/query_parser.py	Tag-aware URL parsing and new _configure_branch_or_tag
src/gitingest/clone.py & entrypoint.py	Context-managed cloning with tag support
src/gitingest/schemas/*.py	Extended models to include tag field
src/gitingest/output_formatter.py	Updated symlink handling to use compatibility helper
Dockerfile	Multi-stage build: CSS, Python build, and runtime image
pyproject.toml & package.json	Updated dev dependencies, package-data, and build scripts
.github/workflows/{ci,publish,scorecard}.yml	Enhanced caching, CSS build, artifact publishing, and security checks
CONTRIBUTING.md & README.md	Documentation updates for CSS pipeline and contribution guide
.pre-commit-config.yaml & dependabot.yml	Streamlined pre-commit config; added Dependabot grouping

Comments suppressed due to low confidence (2)

tests/query_parser/test_query_parser.py:379

• The test for handling failed git fetch (test_parse_repo_source_with_failed_git_command) was removed, leaving fallback logic untested. Consider adding tests for branch and tag fallback when remote fetch fails.

@pytest.mark.asyncio

src/server/query_processor.py:105

• [nitpick] Returning raw exception messages may expose internal details and can be confusing. Consider sanitizing the message or mapping known errors to user-friendly messages.

        return IngestErrorResponse(error=str(exc), repo_url=short_repo_url)