(pre-development) Stars! PBeM service on Kubernetes
Define Stage 5 planning handoff requirements
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doc/total-host.codex.md
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# total-host.codex: Stage 1 + Stage 2 + Stage 3 + Stage 4 Product Requirements
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# total-host.codex: Stage 1 + Stage 2 + Stage 3 + Stage 4 + Stage 5 Product Requirements
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This document contains Stage 1 through Stage 4 of a staged product specification for TotalHost-compatible host behavior.
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This document contains Stage 1 through Stage 5 of a staged product specification for TotalHost-compatible host behavior.
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Stage 1 defines domain behavior and invariants. Stage 2 defines capability inventory, prioritization, and the first usable release boundary. Stage 3 defines architecture-level product contracts and boundary requirements. Stage 4 defines acceptance criteria and risk requirements for MVP validation.
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Stage 1 defines domain behavior and invariants. Stage 2 defines capability inventory, prioritization, and the first usable release boundary. Stage 3 defines architecture-level product contracts and boundary requirements. Stage 4 defines acceptance criteria and risk requirements for MVP validation. Stage 5 defines planning handoff requirements for implementation readiness.
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It intentionally avoids implementation structure, crate boundaries, and execution planning.
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- a risk register with required controls tied to existing requirement IDs
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- clear readiness input for Stage 5 implementation planning
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## Stage 5 Goal
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Define an implementation-handoff contract that turns Stages 1-4 requirements into execution-ready planning inputs without prescribing specific crate/module choices.
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## Stage 5 Planning Handoff Requirements
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### A) Workstream Definition Requirements
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- `HND-001` The handoff must define domain workstreams that partition MVP scope without violating Stage 3 boundaries.
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- `HND-002` Each workstream must declare the requirement IDs it is responsible for delivering (`LIF-*`, `VAL-*`, `CAP-*`, `ARC-*`, `OBS-*`, `TRC-*`).
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- `HND-003` Each workstream must declare explicit dependencies on other workstreams using requirement IDs, not implementation artifacts.
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- `HND-004` Workstreams must be organized around product domains (for example: submission intake, lifecycle coordination, generation, distribution, operator visibility) rather than flat technical task lists.
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### B) Verification Strategy Requirements
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- `HND-101` The handoff must define a verification strategy that covers all Stage 2 `MVP` capabilities and all Stage 4 acceptance criteria.
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- `HND-102` Verification definitions must specify evidence expectations per requirement category: behavioral validation, security/isolation checks, failure-recovery checks, and observability/traceability checks.
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- `HND-103` Verification strategy must define minimum evidence needed to declare first usable release readiness (`RLB-*`).
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- `HND-104` Verification outputs must be compatible with machine-readable traceability reporting required by `TRC-04`.
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### C) Traceability and Observability Handoff Requirements
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- `HND-201` The handoff must define how requirement IDs are attached to implementation and verification artifacts from day one.
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- `HND-202` The handoff must define a provisional telemetry taxonomy for lifecycle spans/events that preserves migration path to future lexicon alignment.
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- `HND-203` The handoff must require that every lifecycle-critical workflow has both operator-facing diagnostics and OTel trace correlation.
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### D) Delivery Readiness Requirements
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- `HND-301` The handoff must define release-readiness gates tied to `RLB-*`, `AC-*`, and `RSK-*` controls.
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- `HND-302` The handoff must explicitly list unresolved decisions deferred from earlier stages and assign decision points before implementation lock-in.
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- `HND-303` The handoff must include rollback/recovery planning expectations for lifecycle-critical failures discovered during implementation validation.
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## Stage 5 Handoff Package (Required Contents)
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- `PKG-01` **Requirement Coverage Matrix** mapping each `MVP` capability to acceptance criteria and planned verification evidence.
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- `PKG-02` **Workstream Dependency Map** showing domain workstreams, dependency direction, and gating requirements.
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- `PKG-03` **Risk Control Plan** mapping each `RSK-*` item to validation checkpoints and release gates.
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- `PKG-04` **Traceability Plan** for requirement-to-code and requirement-to-test linkage, including machine-readable output expectations.
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- `PKG-05` **Observability Plan** for lifecycle trace spans, required correlation attributes, and failure-safe telemetry behavior.
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## Stage 5 Deliverables
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Stage 5 is complete when this document provides:
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- a requirements-first handoff contract that can drive detailed implementation planning
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- explicit workstream and dependency expectations grounded in requirement IDs
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- verification and release-readiness expectations tied to `RLB-*`, `AC-*`, and `RSK-*`
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- traceability and observability handoff requirements that prevent coverage drift during execution
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## Deferred to Later Stages
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- traceability implementation design (annotation format, report shape, CI policy)
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- ATProto lexicon definition details and exact telemetry field mapping
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- implementation plan, task breakdown, and execution order
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- detailed implementation plan, task breakdown, and execution order
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## References
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