End-to-end implementation per docs/sprint-2.5-plan.md.
New requirement added by user mid-sprint: 4-role RBAC (Super Admin /
Engineer / Owner / User) with dual-auth for Engineer flashing firmware,
plus a "mini Arduino IDE" inside the Studio.
Tests: pytest 231/231 green (129 Sprint 2 + 102 Sprint 2.5 new).
RBAC core (arautopilot/core/):
- rbac.py: 4 roles, 12 capabilities, immutable capability matrix,
has() / capabilities_of() / require() / requires_dual_auth() helpers.
Engineer flashing firmware needs SA approval; everything else is
single-factor.
- user.py: User model with PBKDF2-HMAC-SHA256 PIN hashing (200k iters,
16-byte salt, self-describing hash format for future migrations).
4-8 digit numeric PINs enforced.
- user_store.py: JSON-backed user database. seed_demo_users() for
first-run UX.
- audit.py: append-only JSONL audit log. AuditEvent with timestamp,
user_id, role, action, target, outcome, reason, secondary_user_id
for dual-auth, optional extra payload. Crypto signing of lines
deferred to Sprint 8.
Studio GUI (arautopilot/studio/):
- app.py: real entry point (replaces Sprint 0 stub). --seed-demo
populates demo users without launching GUI; --data-dir overrides the
~/.ar-autopilot/studio/ default.
- session.py: Session + SessionHolder. check() always audits the
decision; verify_super_admin_pin() + log_dual_auth_grant() for
dual-auth flows.
- login_window.py: modal login dialog with user picker + PIN field.
Audits login attempts (success and bad-PIN denials).
- main_window.py: top-level window with sidebar (user + role + caps)
and tab area (Overview, Flash Console, Project placeholder,
Telemetry placeholder).
- flash_console.py: the "mini Arduino IDE". Lists serial ports via
pyserial; picks firmware variant (esp32-dev / esp32-debug); compiles
via 'pio run'; flashes via 'pio run -t upload --upload-port <port>';
streams pio output to a dark-themed read-only console; supports
cancel. For Engineer flashes, asks the Super Admin for their PIN
inline before invoking pio. Records dual-auth grant + pio exit code
in the audit log.
Dependencies:
- New [project.optional-dependencies] group 'studio': PySide6>=6.6,
pyserial>=3.5, platformio>=6.1. Kept optional so the core can be
installed in lean / CI environments.
Tests (arautopilot/tests/):
- test_rbac.py: 32 tests for capability matrix, dual-auth policy,
no-privilege-escalation invariants, partial overlap between roles.
- test_user.py: 11 tests for PIN hashing, verification, salting,
serialisation, field validators.
- test_audit.py: 9 tests for JSONL append, immutability, round-trip,
corrupt-line detection, dual-auth event shape, blank-line tolerance.
- test_user_store.py: 10 tests for CRUD, persistence, role filtering,
demo seed idempotency.
- test_session.py: 9 tests for capability checks + audit side effects,
SA PIN verification, dual-auth recording, SessionHolder lifecycle.
- test_studio_smoke.py: 5 headless tests verifying Studio modules
import without a display server, --seed-demo works, helpers safe to
call without hardware.
NOT in Sprint 2.5 (intentional):
- Crypto signing of audit log lines (hash-chain) -- Sprint 8
- HWID binding of the user store -- Sprint 8
- Project configurator + .appack compiler -- Sprint 4
- Flutter bridge display -- Sprint 4
- Telemetry dashboard tab -- Sprint 4
- Serial monitor as a separate tab -- future enhancement
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
alro65