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profilarr/docs/CONTRIBUTING.md

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Contributing to Profilarr

This guide covers how to submit changes and what we expect from contributions. For the branching model, release process, and versioning, see DEVELOPMENT.md.

Getting Started

Prerequisites

Tool Version Required Description
Git 2.x+ Yes Version control; also used at runtime for PCD operations
Deno 2.7+ Yes Runtime, task runner, and package manager
Node.js 20.19+ Yes Required by Vite and svelte-check
.NET SDK 8.0+ No Only needed for the parser service (CF/QP testing)
git clone https://github.com/Dictionarry-Hub/profilarr.git
cd profilarr
deno task dev

Making a Change

Starting Your Branch

Branch off develop with a descriptive name:

git checkout develop
git pull
git checkout -b feat/settings-redesign

Work on your branch, committing as you go. Your branch is yours; commit as often as you like.

Staying Up to Date

While you work, develop keeps moving: bug fixes land, other things get merged. Your branch falls behind. You need to pull those changes in.

We use rebase for this, not merge. Rebase takes your commits and replays them on top of the latest develop, as if you started your branch today:

Before rebase:

develop:  A — B — C — D — E
               \
feat:           X — Y — Z

After rebase:

develop:  A — B — C — D — E
                             \
feat:                         X' — Y' — Z'

X', Y', Z' are the same changes but with new commit hashes; they have a different starting point now. This keeps history clean and linear instead of creating a web of merge commits.

To rebase:

git fetch origin
git rebase origin/develop

If there are conflicts, git pauses on each one:

# Open the conflicted files, resolve the markers (<<<<, ====, >>>>)
git add <resolved-file>
git rebase --continue

If it goes badly wrong:

git rebase --abort

After rebasing, the remote still has the old commits, so you need to force push:

git push --force-with-lease

--force-with-lease is safer than --force; it refuses to push if someone else has pushed to the branch since you last fetched.

Submitting a Pull Request

Before opening a PR, rebase one final time to make sure your branch is current:

git fetch origin
git rebase origin/develop
git push --force-with-lease

Then open a PR on GitHub targeting develop. A template will pre-fill the description: fill in what the PR does, link any related issues, and check off the checklist items.

The PR title is the commit message. Since we squash merge, the PR title becomes the single commit on develop. It must follow conventional commit format:

feat: add regex filter type
fix: sync status not updating after save
refactor: extract profile compilation logic

One feature or fix per PR. Keep changes focused and update docs when behavior changes. Tests are written by the maintainer; contributors don't need to include them.

Community PRs follow the same process as internal feature branches: they sit in the queue until develop is free, then get included in the next batch for testing. Community contributions are prioritised for testing over internal work where possible.

PR Scope

One feature or fix per PR. If you spot something small while working (a typo, a missing null check, a wrong label) and it's in code you're already touching, it's fine to include it. If you'd describe the PR as doing two things, split it.

The reason is squash merging: everything collapses into one commit. If a bundled change causes a regression, you can't revert just that part; you revert the whole PR. Keeping unrelated changes separate preserves that option.

Doc-only changes (comments, wording, formatting) are always fine to bundle.

Guidelines

Naming

Branches:

Prefix Use Example
feat/ New features feat/settings-redesign
fix/ Bug fixes (non-critical) fix/sync-status-display
hotfix/ Critical fixes against a tag hotfix/v2.2.0-sync-crash
refactor/ Code restructuring refactor/db-query-layer
chore/ Maintenance, deps, CI chore/update-dependencies
docs/ Documentation changes docs/contributing-guide

Commits - Conventional Commits:

feat: add regex filter type
fix: sync status not updating after save
docs: update contributing guide
refactor: extract profile compilation logic
chore: update Deno to 2.x

The message after the colon is imperative: what the commit does when applied, not what you did.

Tags - Semantic Versioning:

Change Example
Bug fix v2.1.0v2.1.1
New feature v2.1.0v2.2.0
Breaking change v2.1.0v3.0.0

A release takes the version of its highest-impact change. See Versioning for how to decide which row a change falls into.

Code Conventions

  • Svelte 5, no runes. Use onclick, no $state / $derived.
  • Alerts for feedback. Use alertStore.add(type, message).
  • Dirty tracking. Use the dirty store to block saves + warn on navigation.
  • Routes > modals. Only use modals for confirmations or rare one-off forms.
  • API: extend /api/v1/* only; legacy routes are migration targets.

AI-Assisted Contributions

AI tools may be used as assistants, but the contribution must be yours. You are responsible for the code, the reasoning behind it, and the communication around it.

PR descriptions, issue comments, and review replies must reflect your own understanding of the change. Do not submit generated summaries, invented context, unrelated validation notes, or explanations you cannot personally stand behind. Using AI to tidy wording is fine; outsourcing the substance of the conversation is not.

AI-assisted contributions must still follow the normal project rules:

  • Keep the PR focused to one feature, fix, or documentation change.
  • Follow the existing architecture, style, and conventions.
  • Do not include unrelated cleanup, generated noise, editor metadata, chat logs, AI tool configuration, or promotional links.
  • Be ready to answer questions and make follow-up changes yourself.

When reporting validation, use this project's commands. For code changes, that usually means the same Deno-based checks used by CI: deno task lint, deno task check, deno task build, or the relevant deno task test ... command. Do not list unrelated npm, framework, or generated tool commands as if they validate Profilarr.

If you could not run a relevant check, say that plainly and explain why. A PR does not need to be perfect before review, but the validation notes should be accurate.

Maintainers may close PRs that appear to be unreviewed generated output, issue-scraping submissions, advertising, or changes the author cannot explain.

Off-Limits

The PCD module (Profilarr Compliant Database system) is complex and tightly coupled. Don't modify it without discussing with the maintainer first. This includes the op replay system, the compile pipeline, and the export flow. See docs/ARCHITECTURE.md for how it works.

Reporting Issues

Use the GitHub issue templates. There are templates for bugs, feature requests, and general feedback.

Closing Issues

Close an issue when the fixing PR merges into develop. There's no need to wait for a stable release. The work is done and in the pipeline. Leave a short comment so the reporter knows what to expect:

Fixed in develop, will ship with the next release.

Duplicates, out-of-scope requests, and won't-fix decisions should be closed immediately with a brief explanation.

Examples

Community contribution

A contributor wants to add a dark mode toggle. They fork the repo, clone it, and create a branch:

git clone https://github.com/their-username/profilarr.git
cd profilarr
git remote add upstream https://github.com/Dictionarry-Hub/profilarr.git
git checkout -b feat/dark-mode-toggle

They build the feature, commit, and push to their fork:

git commit -m "feat: dark mode toggle"
git push origin feat/dark-mode-toggle

They open a PR on GitHub targeting develop. The PR title follows conventional commits: feat: add dark mode toggle.

Right now, the notifications feature is being tested on develop. The PR waits. The maintainer reviews the code and leaves feedback. The contributor pushes updates.

Notifications testing finishes and gets tagged as v2.5.0. The maintainer decides to include the dark mode PR in the next batch. The contributor rebases first:

git fetch upstream
git rebase upstream/develop
git push --force-with-lease

The maintainer squash merges the PR. :develop rebuilds with the dark mode toggle. Beta testers start testing. The contributor's work goes through the same cycle as any internal feature.

Contributor needs to rebase

A contributor opened a PR for fix/sync-status-display two weeks ago. Since then, several bug fixes and a feature have landed on develop. Their PR now has merge conflicts.

The maintainer comments on the PR: "Please rebase from develop."

The contributor updates their branch:

git fetch upstream
git rebase upstream/develop

Git pauses on a conflict in src/lib/client/ui/SyncStatus.svelte:

const status = getSyncStatus(profile);

The contributor resolves it, keeping the correct version:

git add src/lib/client/ui/SyncStatus.svelte
git rebase --continue

No more conflicts. They force push to update the PR:

git push --force-with-lease

The PR is now clean and up to date. The maintainer can review and squash merge when develop is free.

Reference

  • docs/ARCHITECTURE.md - full codebase encyclopedia (modules, data flow, PCD)
  • docs/DEVELOPMENT.md - branching model, release process, versioning
  • deno task stats - per-module code stats (TS/JS/Svelte/CSS/SQL/C#)