Readiness

:::info Source Sourced from services/delivery-service/SERVICE_READINESS.md in the documentation repo. :::

1. Level per Milestone

M	Level	Scope
M0	—	Design skeleton + storyboards
M1	L3	Player MVP + AI tutor + offline + resume + progress emission
M2	L3	— (additive)
M3	L4	SCORM 2004 + xAPI runtime + branching scenarios
M4	L4	Live collab (discuss board), LTI 1.3 launch
M5	L4	Mobile native parity

2. Gates

G1 — Domain

• PlaySession aggregate; state machine init → active → paused → completed | abandoned.
• Navigation cursor invariants (monotonic per course-structure order).
• 95% unit / 80% mutation.

G2 — API

• OpenAPI; Idempotency-Key; problem+json; cursor pagination.
• SSE for AI tutor stream.
• Pact: consumer of content, enrollment, ai-gateway; producer of progress.

G3 — Events

• delivery.play_session.*, delivery.tutor_turn.*, delivery.offline_mounted.v1, .unmounted.v1 registered.
• Outbox + inbox.

G4 — Sync

• PlaySession registered — server_authoritative (server wins on cursor conflicts).
• Statements outbox client-side (7-day offline).

G5 — AI

• Tutor calls via AIClient; local+cloud parity.
• Provenance on every turn.
• Refusal UX (ai.refused.safety + custom tutor-specific).
• Prompts registered: tutor, explain-concept, summarize, nudge.
• Red-team corpus passes.
• Accept-rate ≥ 50% (S1 target).

G6 — Observability

• Player RUM metrics (LCP, INP, CLS).
• Session duration, completion rate, bounce rate dashboards.
• AI: first-token p95, cost/session, refusal rate.

G7 — Performance

• Player LCP < 1s online.
• Offline cold mount < 600ms.
• AI tutor first-token < 600ms p95.
• 10k concurrent sessions/region sustained.

G8 — Security

• License envelope enforcement verified.
• Cross-tenant resume blocked.
• Bundle tamper → session-abandon + event.
• Two-tenant iso green.
• Pen-test M1 scope closed.

3. SLOs

SLI	Target
Session start p95	< 300ms
AI tutor first-token p95	< 600ms
Statement emit success	≥ 99.99% (with outbox retry)
Offline mount cold p95	< 600ms
Progress resume accuracy	≥ 99.9%

4. DoD per Story

• Unit + integration + contract + E2E tests green.
• OpenAPI updated.
• AI changes → prompt regression + safety eval pass.
• Airplane-mode E2E if offline-touching.
• Two-tenant iso test.
• Dashboards + runbooks updated.

5. Release Checklists

S1 (M1)

• Player MVP: navigation, resume, progress, offline, AI tutor.
• AI tutor accept-rate ≥ 50%; red-team corpus.
• Offline cold mount < 600ms on low-end Android.
• Airplane-mode J-12 E2E green.
• Tamper detection E2E.
• Accessibility: WCAG 2.2 AA on player.

S4 (M3)

• SCORM 2004 runtime: all cmi.* interactions pass conformance.
• xAPI 1.0.3 runtime.
• Branching scenarios: 5-level depth tested.
• Compliance reports visible to org admins.

S6 (M5)

• Mobile native parity (iOS + Android) ≥ 4.5 app store rating.
• Multi-region session affinity.
• HIPAA-compliant tenant session isolation.