padelnomics/CHANGELOG.md

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog.

[Unreleased]

Changed

• Pico CSS → Tailwind CSS v4 — full design system migration across all templates (except planner, which keeps its own CSS)
  • Standalone Tailwind CLI binary (no Node.js) with make css-build / make css-watch
  • Court Tech brand theme: navy/charcoal/electric/accent color palette
  • Component classes (.btn, .card, .form-input, .table, .badge, .flash, etc.) in input.css for consistent styling
  • Self-hosted Commit Mono font (replaces JetBrains Mono) for monospace data display
  • Docker multi-stage build: CSS compiled in dedicated stage before Python build
• Landing page teaser calculator restyled with Tailwind utilities and brand colors

Removed

• Pico CSS CDN dependency
• custom.css (replaced by Tailwind input.css with @layer components)
• JetBrains Mono font (replaced by self-hosted Commit Mono)

Fixed

• Empty env vars (e.g. SECRET_KEY=) now fall back to defaults instead of silently using "" — fixes 500 on every request when .env has blank values

Added

• Comprehensive migration test suite (tests/test_migrations.py — 20 tests) covering fresh DB, existing DB, up-to-date DB, idempotent migration, version discovery, _is_fresh_db, migration 0001 correctness, and ordering
• Expanded migrate.py module docstring documenting the 8-step algorithm, protocol for adding migrations, and design decisions
• Sequential migration system (migrations/migrate.py) — tracks applied versions in _migrations table, auto-detects fresh vs existing DBs, runs pending migrations in order
• migrations/versions/0001_rename_ls_to_paddle.py — first versioned migration (absorbed from scripts/migrate_to_paddle.py)
• Server-side financial calculator (planner/calculator.py) — ported JS calc(), pmt(), calcIRR() to Python so the full financial model is no longer exposed in client-side JavaScript
• POST /planner/calculate endpoint for server-side computation
• Pre-computed initial data (window.__PADELNOMICS_INITIAL_D__) injected on page load for instant first render
• Debounced API fetch pattern in planner.js with AbortController for in-flight request cancellation
• Computing indicator CSS (.planner-app--computing) with subtle "computing..." text
• Comprehensive test suite for calculator (tests/test_calculator.py — 227 tests) covering all 4 venue/ownership combos, edge cases, and Hypothesis property-based fuzzing
• Comprehensive billing test suite (371 tests total):
  • tests/conftest.py — shared fixtures (DB, app, clients, subscriptions, webhook helpers)
  • tests/test_billing_helpers.py — unit tests for SQL helpers, feature/limit access, plan determination (60+ tests + parameterized + Hypothesis)
  • tests/test_billing_webhooks.py — integration tests for LemonSqueezy webhooks (signature verification, all lifecycle events, Hypothesis fuzzing)
  • tests/test_billing_routes.py — route tests (pricing, checkout, manage, cancel, resume, subscription_required decorator)
  • Added hypothesis>=6.100.0 and respx>=0.22.0 to dev dependencies for property-based testing and httpx mocking
  • Factored into Copier template — all billing tests now generate as .jinja templates with provider-specific conditionals for Stripe, Paddle, and LemonSqueezy
• GitLab CI/CD pipeline (.gitlab-ci.yml) — runs pytest + ruff on master/MRs, auto-deploys on master
• Blue-green deployment with Docker Compose profiles (docker-compose.prod.yml, deploy.sh)
  • nginx router on port 5000 proxies to active blue/green slot
  • Zero-downtime: new slot health-checked before traffic switch
  • Automatic rollback on failed health check

Removed

• scripts/migrate_to_paddle.py — superseded by versions/0001_rename_ls_to_paddle.py

Changed

• planner.js no longer contains calc(), pmt(), or calcIRR() functions — computation moved server-side
• render() split into render() (tab switching + schedule calc) and renderWith(d) (DOM updates from data)
• Tab switching now renders from _lastD cache (instant, no API call)
• Slider input triggers 200ms debounced server call instead of synchronous client-side calc