Use when making ANY code change to pytrendy, creating issues, or opening PRs. Covers commit format, PR title conventions, branch model, deprecation policy, API surface, diff conventions, remote session behaviour, and things you must not touch. Load this FIRST before any code work.
Use when working on pytrendy code, tests, or data. Covers the 5-stage pipeline, module map, install/verify, datasets, PyTrendyResults API, and docs tooling.
Use when running, writing, or verifying pytrendy's test suite. Also covers pytest configuration.
Use when touching .github/workflows/, release config (.releaserc*), mkdocs.yml, docs deploy, or the whats-new generator. Covers branch-to-release-channel mapping, semantic-release, docs deploy gating, and the agentic whats-new flow.
Use when preparing a fix or feature PR for review and adding before/after plot evidence to the PR body. Covers generating pre-fix and post-fix plots via detect_trends(plot=True), updating the PR body with image placeholders via gh CLI, the human-in-the-loop image upload to user-attachments, and cleanup. Never commits plot files or temp scripts.
Use when debugging a pytrendy bug, reproducing a regression, or inspecting intermediate pipeline stage output. Covers the tests/test.py sandbox convention, phase 1 (process_signals debug=True plots), phase 2 (segments_refine stage-by-stage bisect), and handoff to the test skill for formal regression tests.