* feat: default Slack/dashboard/schedule PRs + commits to the app identity (#57)
Slack/dashboard/schedule runs now author PRs and run git/gh operations as the
GitHub App seahaven-openswe[bot] by default (matching GitHub-issue runs), so the
self-review 422 is impossible by construction rather than guarded in the prompt.
A profile flag author_prs_as_user restores per-user attribution.
- open_pull_request._resolve_pr_author_token + auth.resolve_github_token: default
to the installation token for these sources; per-user only when opted in.
- authorship: commit identity -> seahaven-openswe[bot] (numeric noreply;
accepted Vercel-resolution risk, documented inline).
- self-trigger safety: INTERNAL_BOT_LOGINS + webapp/reviewer_reconcile/reply
markers recognize seahaven-openswe[bot] (bot-authored events are now ours).
Supersedes the prompt-only guard in #58.
* fix: author commits as the app bot in the default path (SH-IDSPLIT-01)
Security review found the commit identity was NOT actually unified to the bot:
resolve_triggering_user_identity got a 403 from the installation token and fell
back to configurable['github_login'], so commits were still authored as the
triggering user (commit=user, push+PR=bot — a three-way split that missed the
stated goal). Now gate the triggering-user identity resolution on the same
default-bot decision as the token: slack/dashboard/schedule default to the app
bot identity unless author_prs_as_user is set.
* docs(security): record AUTHZ-SLACK-BOT-DEFAULT-001 as an accepted residual (#59)
Single-user deployment; bounded by App-on-pilot + ALLOWED_GITHUB_REPOS lock.
Revisit (add a per-user gate) before expanding users or the App installation.
