fix: resolve avatars from linked accounts

[gvieira18]

Contexto

Depois do #508, o avatar do menu do usuário segue esta ordem: upload, conta GitHub vinculada, conta Discord vinculada e iniciais. O resto do sistema não seguia essa regra:

• A timeline e a página de Profile liam só o upload.
• A retrospectiva montava github.com/{nome}.png com nomes que não são login do GitHub. O resultado era imagem quebrada ou foto de outra pessoa.
• O detector de bot não reconhecia o Copilot.

Este PR alinha todos esses pontos e corrige os casos encontrados ao gerar uma retro com range longo.

Alterações

Avatar (identity / panel-app)

• O avatar enviado passa a usar a conversão webp (imageUrl(ProfileImage::Avatar)) em vez do arquivo original.
• O avatar do GitHub prefere metadata.avatar (avatars.githubusercontent.com/u/{id}), que não quebra quando a pessoa renomeia o usuário. github.com/{username}.png fica como fallback.
• Timeline: composer, reply composer, header do post e respostas usam getFilamentAvatarUrl(). As listas carregam user.media e user.providers junto, para evitar N+1.
• Página de Profile: o computed novo avatarDisplayUrl mostra o avatar vinculado. O avatarPreviewUrl continua só com o upload, porque controla o botão de remover e o crop.
• Trocar o avatar dispara refresh-sidebar e refresh-topbar, e o user menu se atualiza sem F5.

Retrospectiva (community / portal)

• ResolvePeople resolve a URL na origem (ExternalIdentity::avatarUrl()) e devolve null em vez de montar github.com/{username do site}.png.
• Componente novo x-portal::retro.avatar: mostra a foto ou as iniciais. Substitui os onerror que trocavam a imagem para github.com/{login}.png.
• Logins longos sem quebra não empurram mais o card para fora da coluna.

GitHub (integration-github)

• is_bot passa a considerar user.type === 'Bot'. O Copilot comenta reviews como Copilot, sem o sufixo [bot].
• Commits sem conta vinculada (e-mail não associado ou conta apagada) gravam author_linked: false. Na retro, essas pessoas aparecem com iniciais, sem @ e sem link.

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Plano de Testes

• composer check (Rector, Pint, PHPStan)
• php artisan test --compact --parallel: 1826 de 1826
• Timeline e Profile mostram o avatar do GitHub vinculado sem upload
• Trocar o avatar atualiza o user menu sem recarregar a página
• Retro local com range longo: commits sem conta com iniciais, Copilot fora do ranking

Após o deploy

• Rodar php artisan github:backfill --full. O comando regrava is_bot e author_linked no histórico. O incremental não alcança as linhas antigas.
• Republicar as edições da retro que devem refletir a correção. O deck publicado lê o snapshot congelado.

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Issues Relacionadas

O app mobile foi avisado em he4rt/he4rt-app#8: o avatar_url da API mobile pode vir null desde o #508.

Retro com o fix: iniciais para quem não tem mais a conta no GitHub

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📝 Walkthrough

Walkthrough

Avatar URLs now use stored provider images and system profile images according to the updated selection rules. GitHub contribution metadata records bot status and author linkage. Retrospective person data distinguishes linked accounts, and portal cards and slides render initials when no avatar URL is available.

Suggested reviewers: danielhe4rt

Priority: ⬇️ Low

Change: Bug fix

Merge Risk: 🔵 Low · up to 9129a

People without avatar images cannot be identified in some retrospective lists using assistive technology. This is a localized accessibility issue that can be fixed before merge or accepted as a bounded follow-up.

Security Architecture Review

Security architecture risk: 🔵 Low · up to 9129a

The changes primarily affect image display and contribution attribution. Existing webhook authentication and repository restrictions remain in place, and no additional privileges or server-side image fetching were identified in the inspected paths. Remaining uncertainty concerns linked-account image visibility and mixed-identity attribution, rather than a demonstrated new security vulnerability.

Retained concerns
No architecture-level concerns identified.

Security review details

Security Blast Radius

• inferred — The inspected effects reach viewers of profile, timeline and retrospective images, and attribution within tracked GitHub repositories. New upload-only-to-provider-fallback callers broaden where linked-account URLs are visible, but the inspected paths do not acquire server-fetch credentials or additional application privileges. Intended linked-account visibility and downstream mobile handling were not established.

Security Findings and Attack Paths

• inferred — An attacker-controlled Git author name can collide with a linked GitHub login in actor_login-based groups. A mixed group can then inherit linked status and account imagery despite an explicitly unlinked commit. The base already merged these names and generated linked profile URLs; the PR narrows isolated unlinked attribution but does not eliminate this pre-existing ambiguity. An increased security exposure was not established, so this is not retained as an introduced PR concern.

Trust Boundaries and Controls

• observed — The public webhook route applies HMAC signature verification, and projection requires an enabled repository configured for contributions. These controls authenticate delivery and restrict repository scope; they do not verify the ownership implied by a free-form Git commit author name.

Resilience and Maintainability Implications

• observed — Delivery IDs and repository/type/external-reference contribution keys provide durable deduplication. Receipt insertion precedes projection, however, so a failure after receipt persistence can cause an ordinary repeated delivery to skip unfinished projection. These processing paths are unchanged by the PR; external recovery orchestration and simultaneous-insert behavior were not verified.

Hardening Proposals

• proposed — For future attribution hardening, separate unlinked Git author names from stable provider-account identities when grouping contributions. This would prevent name collisions from inheriting linked-account presentation without treating the existing ambiguity as a newly introduced vulnerability.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 68.29% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 41 functions across 37 files. (2 skipped:…	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly identifies the linked-account avatar resolution, a primary change in the pull request.
Description check	✅ Passed	The description covers the context, changes, test plan, related issue, and an after screenshot. It omits the template’s optional before screenshot.

Full details: Docstring Coverage

Explanation

Docstring coverage is 68.29% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 41 functions across 37 files. (2 skipped: 2 unsupported.)

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Actionable comments posted: 1

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• 🪄 Fix CodeRabbit comments on this PR

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Inline comments:
Review comments at
@app-modules/portal/resources/views/components/retro/avatar.blade.php:
- Line 17: Update the initials fallback in the avatar component: replace its
aria-hidden treatment with an image role and an accessible label using the
person’s name from $name, so assistive technology can identify the person.

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ℹ️ Review info

⚙️ Run configuration

• Configuration used: Repository YAML (base), Central YAML (inherited)
• Review profile: CHILL
• Plan: Advanced
• Run ID: 953cd06c-91ec-4c6f-bc17-bd7f2d32339f

📥 Commits

Reviewing files that changed from the base of the PR and between 98a4b99 and 9129a8d.

📒 Files selected for processing (39)

• app-modules/community/src/Retrospective/Actions/ResolvePeople.php
• app-modules/community/src/Retrospective/DTOs/PersonAccount.php
• app-modules/community/src/Retrospective/DTOs/PersonIdentity.php
• app-modules/community/src/Retrospective/DTOs/PromotionCard.php
• app-modules/community/tests/Feature/Retrospective/ResolvePeopleAvatarTest.php
• app-modules/identity/src/ExternalIdentity/Enums/IdentityProvider.php
• app-modules/identity/src/User/Models/User.php
• app-modules/identity/tests/Feature/User/FilamentAvatarUrlTest.php
• app-modules/integration-github/src/Backfill/BackfillRepository.php
• app-modules/integration-github/src/Retrospective/GithubSource.php
• app-modules/integration-github/src/Webhook/ProjectGithubEvent.php
• app-modules/integration-github/tests/Feature/BackfillRepositoryTest.php
• app-modules/integration-github/tests/Feature/GithubWebhookTest.php
• app-modules/integration-github/tests/Feature/Retrospective/GithubSourceTest.php
• app-modules/panel-app/resources/views/components/profile-media-header.blade.php
• app-modules/panel-app/resources/views/components/profile-preview-card.blade.php
• app-modules/panel-app/resources/views/components/timeline/header.blade.php
• app-modules/panel-app/resources/views/livewire/timeline/post-show.blade.php
• app-modules/panel-app/resources/views/livewire/timeline/thread-replies.blade.php
• app-modules/panel-app/resources/views/pages/profile.blade.php
• app-modules/panel-app/src/Livewire/Timeline/Composer.php
• app-modules/panel-app/src/Livewire/Timeline/Feed.php
• app-modules/panel-app/src/Livewire/Timeline/PostShow.php
• app-modules/panel-app/src/Livewire/Timeline/ReplyComposer.php
• app-modules/panel-app/src/Livewire/Timeline/ThreadReplies.php
• app-modules/panel-app/src/Pages/ProfilePage.php
• app-modules/panel-app/tests/Feature/ProfileMediaTest.php
• app-modules/panel-app/tests/Feature/Timeline/ThreadPageTest.php
• app-modules/portal/resources/css/retrospective.css
• app-modules/portal/resources/views/components/retro/avatar.blade.php
• app-modules/portal/resources/views/components/retro/person-card.blade.php
• app-modules/portal/resources/views/components/retro/promotion-card.blade.php
• app-modules/portal/resources/views/components/retro/slides/closing.blade.php
• app-modules/portal/resources/views/components/retro/slides/cover/onboarding.blade.php
• app-modules/portal/resources/views/retro/slides/github/repos.blade.php
• app-modules/portal/resources/views/retro/slides/he4rt/tag.blade.php
• app-modules/portal/tests/Feature/PromotionSectionTest.php
• app-modules/portal/tests/Feature/RetrospectiveSlidesTest.php
• composer.json

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