Quality Evaluation: polyrepo-split-2026-05-10.md

Document Type: Research Document (Phase 1) Phase Transition: Phase 1 (Research) → Phase 2 (Design) Status: CONDITIONAL PASS Evaluator: disciplined-quality-evaluation skill (KLS framework) Date: 2026-05-10

Executive Summary

The Phase 1 research document for the Terraphim AI polyrepo split is grounded in real measurements (sentrux gate output, cargo tree counts, tokei LOC, public-API freezes) and produces actionable artefacts for Phase 2. All MUST deliverables of the plan are completed. The document is approved to advance to Phase 2 with two non-blocking improvement recommendations: (1) assign explicit owners to open decisions D1–D5/D7 before Phase 2 begins, and (2) complete the deferred SHOULD items (cargo build --timings, cross-boundary tests inventory, aggregator decoupling sketch) at the start of Phase 2 so the design has full data.

KLS Dimension Scores

| Dimension | Score | Justification | Required Fix | |-----------|-------|---------------|--------------| | Physical | 4/5 | Clear hierarchical structure (14 numbered sections + executive summary). Tables consistently formatted. Cross-references use file paths the reader can open. Markdown renders cleanly. Lacks a TOC for a document this size. | None blocking. Recommendation: add a clickable TOC after §Executive Summary. | | Empirical | 4/5 | Concrete numbers everywhere (5249/10000, 49 members, 39 dependents, 854 Rust files). Acronyms defined or self-evident in context (KLS, MUST/SHOULD, SCC, KG). Reader needs Cargo workspace knowledge — appropriate for the audience. The phrase "the brief" in §3 could be ambiguous to a fresh reader; resolved by §13 cross-reference but worth making explicit. | None blocking. | | Syntactic | 4/5 | All Phase 1 plan items addressed in document order. §13 exit checklist matches §1–§11 deliverables. §14 handoff is explicit. Tables and lists used consistently. Minor inconsistency: §6 references "rfc-cycle-break.md" without leading docs/research/ path while §14 lists the full path. | None blocking. Recommendation: normalise file-path references throughout. | | Semantic | 5/5 | Numbers traced to source artefacts (.sentrux/baseline.json, cargo metadata output, public-api txt files). Discrepancies (cycle_count 2 vs 3-clique; brief 25 vs actual 39) acknowledged honestly with explanation. Caveats on sentrux 0.5.7's metric output and terraphim_dsm's null concept_names stated upfront. The cycle-break decision is supported by direct edge enumeration, not opinion. | None. | | Pragmatic | 4/5 | Phase 2 has everything it needs to start: cycle-break RFC drafted, cluster suggestions, hub fan-in baseline, public-API constraints. Open decisions enumerated. Phase 2.5 follow-up questions explicit. Weakness: open decision owners are "TBA" — slowing handoff. | None blocking. Recommendation: assign owners (or at least decision-making process) before Phase 2 kickoff. | | Social | 3/5 | Document is single-authored by the agent. No human stakeholder review yet. KLS evaluation (this document) is the first quality check. No recorded approvals from architecture or platform teams. The plan in ~/.claude/plans/ was approved but not the research synthesis itself. | None blocking. Recommendation: circulate to one or two stakeholders for sanity check before Phase 2 begins; record their initials in §13. |

Average Score: (4 + 4 + 4 + 5 + 4 + 3) / 6 = 4.0 / 5 Minimum Score: 3 / 5 (Social)

Essentialism Evaluation

| Check | Status | Evidence | |-------|--------|----------| | Vital Few Focus (≤5 items) | Pass with note | Phase 1 has 13 numbered items in plan, but only 8 are MUST. The MUST set captures the truly essential research deliverables (baseline, hub probes, cycle-break, experimental register, semantic clusters, public-API freeze, tooling, exit checklist). The 5 SHOULD items (build-timings, cross-boundary tests, aggregator sketch, modules per-crate maps, KLS) are explicitly secondary. | | Eliminated Noise | Pass | §8, §9, §10 explicitly marked "deferred" with rationale. The plan itself documented "MUST/SHOULD" classification. Out-of-scope topics (renaming crates, persistence schema, splitting persistence backends) are stated in rfc-cycle-break.md §7. | | Effortless Path | Pass | Plan uses existing tools (sentrux, terraphim_dsm, cargo) rather than building new infra. Avoided custom DSM tooling once sentrux was discovered. KLS evaluation invoked via skill, not bespoke. | | 90% Rule (HELL YES test) | Pass | Each MUST item has direct evidence in docs/architecture/dsm/. Marginal items (semantic cluster naming, aggregator sketch) were either delivered with caveat or deferred — no half-hearted inclusions. |

Decision

GO/NO-GO: CONDITIONAL PASS — approved to advance to Phase 2.

Rationale: All KLS dimensions score ≥ 3 and average is 4.0 (above 3.5 threshold). Essentialism passes all four checks. Real measurements drive the document; honest about deferrals and caveats. Social dimension is the lowest (3/5) because no human review has occurred yet — typical for fresh research documents and not blocking.

Required Actions (none blocking — none required)

Recommended Actions (non-blocking, address during Phase 2 kickoff)

1. Assign owners to D1, D2, D3, D4, D5, D7 before Phase 2 design starts. Without owners, the design phase will stall on these.
2. Complete the three SHOULD deferrals at Phase 2 start (§6 aggregator sketch, §8 build-timings, §9 cross-boundary tests). Phase 2 §16 (aggregator decision) explicitly needs §6.
3. Add a Table of Contents to the research document for navigability.
4. Circulate to one stakeholder (architecture lead or platform owner) for sanity check before Phase 2. Record initials in §13 exit checklist.
5. Normalise file-path references — use docs/research/... consistently throughout instead of bare filename references.

Commendations

• Honest reporting of discrepancies (brief vs actual hub fan-in; sentrux cycle_count 2 vs manifest 3-clique).
• Caveats on tool limitations (sentrux 0.5.7 sub-metrics; terraphim_dsm KG generic-concepts).
• Cycle-break RFC documents the rejected alternative (terraphim_agent_contracts) with rationale rather than only the chosen option.
• Trade-off-driven plan (the originating plan file's three trade-off matrices) is faithfully reflected in Phase 1's decision-deferral pattern.
• Existing tooling (terraphim_dsm) was correctly identified as a sentrux companion rather than competition — saved significant work.

Re-Evaluation

Not required. Document is approved as-is. If recommendations 1–5 are addressed, dimension scores would lift to:

• Social 3 → 4 (with stakeholder review)
• Pragmatic 4 → 5 (with named owners)
• Other dimensions unchanged

projected average: 4.2 / 5.

ZDP Governance Dimension (optional)

Not applicable — this is not a ZDP gate-transition document. The polyrepo split is internal architecture work, not a product gate review (PFA / LCO / LCA / IOC / FOC / CLR).