# Sprint 0208 · Experience & SDKs

## Topic & Scope
- Build a reproducible SDK generator toolchain and shared post-processing layer that stays air-gap safe.
- Ship alpha SDKs (TypeScript, Python, Go, Java) aligned to portal APIs with consistent auth/telemetry helpers.
- Connect SDK outputs to CLI and Console data providers; package offline delivery bundles with provenance.
- Evidence: updated generator pipelines, release configs, and signed artifacts across npm/PyPI/Maven/Go proxies.
- **Working directory:** `docs/implplan` (planning) with execution in `src/Sdk/StellaOps.Sdk.*`.

## Dependencies & Concurrency
- Upstream sprints: Sprint 120.A (AirGap), 130.A (Scanner), 150.A (Orchestrator), 170.A (Notifier) for API and events readiness.
- Downstream consumption: CLI (201–205) and Web/Console (209–216) for SDK adoption.
- Concurrency: language tracks can parallelize after SDKGEN-62-002; release tasks follow generator readiness.

## Documentation Prerequisites
- docs/README.md; docs/07_HIGH_LEVEL_ARCHITECTURE.md; docs/modules/platform/architecture-overview.md.
- docs/modules/cli/architecture.md; docs/modules/ui/architecture.md.
- API/OAS governance specs referenced by APIG0101 and portal contracts (DEVL0101) once published.

## Delivery Tracker
| # | Task ID | Status | Key dependency / next step | Owners | Task Definition |
| --- | --- | --- | --- | --- | --- |
| 1 | SDKGEN-62-001 | TODO | Select/pin generator toolchain; lock template pipeline; define reproducibility criteria. | SDK Generator Guild · `src/Sdk/StellaOps.Sdk.Generator` | Choose/pin generator toolchain, set up language template pipeline, and enforce reproducible builds. |
| 2 | SDKGEN-62-002 | TODO | Blocked until 62-001 pins toolchain; design shared post-processing module. | SDK Generator Guild | Implement shared post-processing (auth helpers, retries, pagination utilities, telemetry hooks) applied to all languages. |
| 3 | SDKGEN-63-001 | TODO | Needs 62-002 shared layer; align with TS packaging targets (ESM/CJS). | SDK Generator Guild | Ship TypeScript SDK alpha with ESM/CJS builds, typed errors, paginator, streaming helpers. |
| 4 | SDKGEN-63-002 | TODO | Start after 63-001 API parity validated; finalize async patterns. | SDK Generator Guild | Ship Python SDK alpha (sync/async clients, type hints, upload/download helpers). |
| 5 | SDKGEN-63-003 | TODO | Start after 63-002; ensure context-first API contract. | SDK Generator Guild | Ship Go SDK alpha with context-first API and streaming helpers. |
| 6 | SDKGEN-63-004 | TODO | Start after 63-003; select Java HTTP client abstraction. | SDK Generator Guild | Ship Java SDK alpha (builder pattern, HTTP client abstraction). |
| 7 | SDKGEN-64-001 | TODO | Depends on 63-004; map CLI surfaces to SDK calls. | SDK Generator Guild · CLI Guild | Switch CLI to consume TS or Go SDK; ensure parity. |
| 8 | SDKGEN-64-002 | TODO | Depends on 64-001; define Console data provider contracts. | SDK Generator Guild · Console Guild | Integrate SDKs into Console data providers where feasible. |
| 9 | SDKREL-63-001 | TODO | Set up signing keys/provenance; stage CI pipelines across registries. | SDK Release Guild · `src/Sdk/StellaOps.Sdk.Release` | Configure CI pipelines for npm, PyPI, Maven Central staging, and Go proxies with signing and provenance attestations. |
| 10 | SDKREL-63-002 | TODO | Requires 63-001; connect OAS diff feed. | SDK Release Guild · API Governance Guild | Integrate changelog automation pulling from OAS diffs and generator metadata. |
| 11 | SDKREL-64-001 | TODO | Wait for 63-002; design Notifications Studio channel scopes. | SDK Release Guild · Notifications Guild | Hook SDK releases into Notifications Studio with scoped announcements and RSS/Atom feeds. |
| 12 | SDKREL-64-002 | TODO | Requires 64-001; define offline bundle manifest. | SDK Release Guild · Export Center Guild | Add `devportal --offline` bundle job packaging docs, specs, SDK artifacts for air-gapped users. |

## Wave Coordination
- Single wave covering generator and release work; language tracks branch after SDKGEN-62-002.

## Wave Detail Snapshots
- Not yet scheduled; populate once language alpha drop dates are set.

## Interlocks
- API governance inputs: APIG0101 outputs for stable schemas.
- Portal contracts: DEVL0101 for auth/session helpers.
- Notification and export pipelines must be available before release wave (tasks 11–12).

## Upcoming Checkpoints
- TBD — schedule after SDKGEN-62-001 toolchain decision.

## Action Tracker
| # | Action | Owner | Due (UTC) | Status |
| --- | --- | --- | --- | --- |
| 1 | Confirm registry signing keys and provenance workflow per language | SDK Release Guild | 2025-11-29 | Open |
| 2 | Publish SDK language support matrix to CLI/UI guilds | SDK Generator Guild | 2025-12-03 | Open |

## Decisions & Risks
- Dependencies on upstream API/portal contracts may delay generator pinning; mitigation: align with APIG0101 / DEVL0101 milestones.
- Release automation requires registry credentials and signing infra; mitigation: reuse sovereign crypto enablement (SPRINT_0514_0001_0001_sovereign_crypto_enablement.md) practices and block releases until keys are validated.
- Offline bundle job (SDKREL-64-002) depends on Export Center artifacts; track alongside Export Center sprints.

### Risk Register
| Risk | Impact | Mitigation | Owner | Status |
| --- | --- | --- | --- | --- |
| Upstream APIs change after generator pin | Rework across four SDKs | Freeze spec version before SDKGEN-63-x; gate via API governance sign-off | SDK Generator Guild | Open |
| Registry signing not provisioned | Cannot ship to npm/PyPI/Maven/Go | Coordinate with sovereign crypto enablement; dry-run staging before prod | SDK Release Guild | Open |
| Offline bundle inputs unavailable | Air-gapped delivery slips | Pull docs/specs from devportal cache; coordinate with Export Center | SDK Release Guild | Open |

## Execution Log
| Date (UTC) | Update | Owner |
| --- | --- | --- |
| 2025-11-22 | Normalised sprint to standard template; renamed file to `SPRINT_0208_0001_0001_sdk.md`; no status changes. | PM |