Redesign the install wizard for clarity:
- swap the sidebar layout for a centered column and a horizontal stepper
- make completed/current stepper entries clickable links
- reorder steps so Server URL precedes LLMs
- use env-var placeholders (ANTHROPIC_API_KEY, etc.) with
per-provider "Where do I get this?" disclosures
- replace the readonly "Validated username" input with a success pill
- drop the GitHub App name field (GitHub confirms the name anyway)
- re-label the GitHub App option and split review rows by strategy
- add a copy action to the Server URL on the review screen
Scope the dev token to PAT installs:
- only generate the dev token, write its files, and set FABRO_DEV_TOKEN
inside the GithubInstallState::Token arm
- mark dev_token optional on InstallFinishResponse in the OpenAPI spec
- hide the Development token card on /install/finishing when absent
- add app_install_finish_omits_dev_token_and_does_not_write_it test
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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