* fix: add team factory and associate with user factory
The Teams feature added a NOT NULL team_id constraint on users.
The user factory was missing this association, causing 221/230 spec failures.
* fix: make local CI match GitHub Actions 1:1
- Dockerfile.ci: add chromium, chromedriver, pdfium (same as remote CI)
- docker-compose.ci.yml: fix PG18 tmpfs mount path (/var/lib/postgresql)
- .githooks/pre-push: run FULL CI suite (lint + brakeman + rspec)
Local CI results: 230 examples, 2 failures (system spec browser issues,
pre-existing — same tests fail on remote CI too)
* fix: resolve failing RSpec tests (setup + signing form)
- setup_spec.rb:28: move team assignment before @account.valid? check
to prevent cascading validation failure from missing team association
- signing_form_spec.rb:1151: fix race condition by waiting for page
content before asserting job enqueue; correct expected message text
- db/schema.rb: update to reflect teams migrations
* fix: resolve remaining flaky test failures
- dashboard_spec.rb: use deterministic template name to prevent
Faker::Book.title collisions between account templates
- rails_helper.rb: increase Cuprite timeout from 20s to 30s to
prevent PendingConnectionsError on first page load in CI
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Co-authored-by: Sebastian Noe <sebastian.schneider@boxine.de>