# Phase Handover — AF-Service-Snapshot (Service Snapshot Architecture) | Field | Value | | --- | --- | | Phase ID | `ai-framework-service-snapshot` | | Title | Service Snapshot Architecture | | Status | Complete | | Service(s) | N/A (documentation / process only) | | Version | Framework service-snapshot-1.0 | | Date | 2026-07-26 | | ADR(s) | Extends [ADR-018](../architecture/adr/ADR-018.md), [ADR-019](../architecture/adr/ADR-019.md) (process; no new ADR) | ## Business Analysis Summary | Item | Detail | | --- | --- | | Capabilities delivered | One compact YAML snapshot per service as primary runtime truth; eliminates repeated reconstruction from completed phase documents; mandatory regeneration after each Complete phase | | Explicit non-goals honored | No business service code changes; no completed business phase retrofits; no pre-populated business snapshots | ## Enterprise Phase Discovery Summary (this docs phase) | Item | Detail | | --- | --- | | Discovery Record location | This handover + [service-snapshot-policy.md](../ai-framework/service-snapshot-policy.md) | | Gaps promoted & closed | Repeated multi-doc state reconstruction → service snapshot first; completed phase doc re-reads eliminated when snapshot valid | | Exclusions | All business phases and services | | CRUD-only rejected | N/A (process rule) | ## Enhancement Catalog ### New normative document | Document | Purpose | | --- | --- | | [service-snapshot-policy.md](../ai-framework/service-snapshot-policy.md) | Required fields, execution entry, fallback reconstruction, regeneration rules, primary runtime truth | ### New snapshot infrastructure | Path | Purpose | | --- | --- | | [docs/service-snapshots/](../service-snapshots/) | Snapshot storage directory | | [docs/service-snapshots/_template.yaml](../service-snapshots/_template.yaml) | Machine-readable template | | [docs/service-snapshots/README.md](../service-snapshots/README.md) | Index and policy link | ### Core execution upgrades | Document | Enhancement | | --- | --- | | [runtime-read-policy.md](../ai-framework/runtime-read-policy.md) | Execution entry; snapshot in always-reload; Discovery mapping uses snapshot baseline | | [context-cache-policy.md](../ai-framework/context-cache-policy.md) | Snapshot always reloads; superseded handovers cache-eligible | | [master-prompt.md](../ai-framework/master-prompt.md) | Snapshot-first loading; regeneration on service extension | | [development-loop.md](../ai-framework/development-loop.md) | Snapshot entry in Discovery; regeneration in Documentation Update; completion rule | | [enterprise-phase-discovery.md](../ai-framework/enterprise-phase-discovery.md) | Baseline from snapshot; no completed phase doc reconstruction | | [mandatory-phase-artifacts.md](../ai-framework/mandatory-phase-artifacts.md) | Artifact #43 Service Snapshot | | [phase-handover.md](../ai-framework/phase-handover.md) | Service Snapshot Update section; next-phase entry uses snapshot | | [quality-gates.md](../ai-framework/quality-gates.md) | Mandatory Service Snapshot gate + sign-off | ## Reusable Components | Component | Location | Reuse notes | | --- | --- | --- | | Service Snapshot Policy | `docs/ai-framework/service-snapshot-policy.md` | Every service-scoped phase | | Snapshot template | `docs/service-snapshots/_template.yaml` | Copy per service on first Complete phase | | Service Snapshot gate | `docs/ai-framework/quality-gates.md` | Regeneration verification | ## Public APIs N/A — documentation/process only. ## Events N/A. ## Permissions N/A. ## Extension Points | Extension point | How to extend | Forbidden uses | | --- | --- | --- | | New snapshot field | Add to policy + template + regeneration procedure | Storing full OpenAPI or phase doc content in snapshot | | New service | Create `.yaml` on first Complete phase | Skipping snapshot gate | ## Known Limitations - No business service snapshots pre-generated — first service phase after this upgrade builds initial snapshot. - Snapshot summarizes state; full contracts remain in reference docs when triggered by read policy. - Framework-only phases do not require a service snapshot file. ## Migration Notes | Item | Detail | | --- | --- | | Alembic revision(s) | N/A | | Upgrade steps | Next service-scoped Complete phase must regenerate `docs/service-snapshots/.yaml` | | Breaking changes | None for runtime; reduced doc fan-out for future phases | ## Dependencies | Dependency | Type | Required for | | --- | --- | --- | | AF-Context-Cache-Policy | Docs | Incremental loading | | AF-Runtime-Read-Policy | Docs | Tiered loading | | AF-Discovery / ADR-019 | Docs | Discovery baseline | ## Boundary Compliance - [x] No foreign service ownership implemented - [x] No business logic duplication - [x] No cross-DB access - [x] No future-phase business functionality pulled forward - [x] No business service code modified ## Service Snapshot Update | Field | Value | | --- | --- | | Snapshot path | N/A (framework phase) | | Snapshot version | N/A | | Last updated | 2026-07-26 | | Fields changed | Policy, template, gates, framework cross-links | ## Enterprise Completeness Sign-Off - [x] Discovery completeness (snapshot-based baseline) - [x] Business completeness (framework process) - [x] Documentation completeness - [x] Self Audit ## Definition of Done - [x] service-snapshot-policy.md published - [x] All listed framework docs updated - [x] Service Snapshot quality gate added - [x] Framework handover complete - [x] No business code changes ## Next Phase Entry 1. [service-snapshot-policy.md](../ai-framework/service-snapshot-policy.md) execution entry order 2. Load `docs/service-snapshots/.yaml` when present; build on first service Complete phase if missing 3. [runtime-read-policy.md](../ai-framework/runtime-read-policy.md) · [context-cache-policy.md](../ai-framework/context-cache-policy.md) 4. Resume business milestones per [next-steps.md](../next-steps.md) when explicitly requested | Field | Value | | --- | --- | | Recommended next phase | Per [next-steps.md](../next-steps.md) (business track) — not started by this phase | | Blockers for next phase | None; initial per-service snapshots created on next Complete phase per service | | Entry checklist | Policies → snapshot → manifests → latest handover → Discovery → implement → regenerate snapshot | ## Completion Sign-Off - [x] Service Snapshot Architecture integrated - [x] Mandatory quality gate added - [x] Framework handover complete - [x] No TODO for claimed deliverables - [x] No business service modifications ## Related Documents - [Service Snapshot Policy](../ai-framework/service-snapshot-policy.md) - [Runtime Read Policy](../ai-framework/runtime-read-policy.md) - [Context Cache Policy](../ai-framework/context-cache-policy.md) - [Phase Handover AF-Context-Cache-Policy](phase-af-context-cache-policy.md) - [Phase Handover AF-Runtime-Read-Policy](phase-af-runtime-read-policy.md)