Requirements Traceability Matrix (RTM)

Last Updated: 2026-09-07
Mode: /architecture-review (full, RTM built — first RTM for this project)
Coverage: 54 % full chain complete (GDD → ADR → Story → Test): 61 / 112
Report: architecture-review-2026-09-07.md

How to read this matrix

Method notes: 87 stories parsed; 118 test files indexed; three Done stories name a test class under a drifted name (InputAdapterPlayModeTests→InputAdapterTests, RebindRoundTripTests→RebindServiceTests, TintFenceTests→TideTintFenceTests) — resolved by basename and reported in the review as documentation drift. Manual-evidence stories (UI / Visual-Feel) are credited only where the named production/qa/evidence/*.md file exists.

Full Traceability Matrix

Coverage Summary

Per layer (full chain): Foundation 31/39 (79 %) · Presentation 6/8 (75 %) · Core 21/38 (55 %) · Feature 3/26 (11 %) · System 0/1 (0 %)

Uncovered Requirements (Priority Fix List)

Foundation layer gaps

• TR-tide-003 — host-authoritative t replicated; client evaluation presentation-only — BLOCKED (Gate 0) → blocked on the friend-group playtest
• TR-tide-013 — client extrapolated t ≤ host t + one replication interval — BLOCKED (Gate 0) → blocked on the friend-group playtest
• TR-net-001 — NGO 2.x host-and-play; no dedicated server / migration / rollback — NO STORY → story it (ADR exists)
• TR-net-002 — two authority rails — NO STORY → story it (ADR exists)
• TR-net-003 — late-join full snapshot — NO ADR → write the ADR — see Known Gaps
• TR-net-004 — disconnect retains HP/Downed/timer; rejoin = late join — NO STORY → story it (ADR exists)
• TR-net-005 — Steam transport (package TBD) — NO ADR → write the ADR — see Known Gaps
• TR-net-008 — drain phase pinned vs owner movement writes — NO STORY → story it (ADR exists)

Core layer gaps

• TR-cam-002 — smoothed follow + aim bias; never detaches; hard cuts; no shake — NO ADR → write the ADR — see Known Gaps
• TR-move-002 — owner-authoritative predicted locomotion 6 u/s, instant accel — NO ADR → write the ADR — see Known Gaps
• TR-move-003 — collision blocks never damages; no player/enemy body collision — NO ADR → write the ADR — see Known Gaps
• TR-move-004 — remotes interpolated never extrapolated — NO ADR → write the ADR — see Known Gaps
• TR-move-005 — closed teleport-snap list; EC21 correction as interpolated write — NO STORY → story it (ADR exists)
• TR-inv-007 — CARRY replication representation (undefined in the quick-spec) — NO ADR → write the ADR — see Known Gaps
• TR-combat-001 — player state machine + Hurt overlay — NO STORY → story it (ADR exists)
• TR-combat-002 — unified strike intent at windup start — NO STORY → story it (ADR exists)
• TR-combat-003 — host resolves at host-stamped instant vs current positions — NO STORY → story it (ADR exists)
• TR-combat-005 — F1–F5 pure, AwayFromZero, EditMode — NO STORY → story it (ADR exists)
• TR-combat-006 — IEnemyCombat.EnterTelegraph; telegraph ≥ 400 ms; stagger; knockback; i — NO STORY → story it (ADR exists)
• TR-combat-007 — telegraph phase replicated state — NO STORY → story it (ADR exists)
• TR-combat-008 — dash i-frames owner-auth; host wins if not received — NO STORY → story it (ADR exists)
• TR-combat-009 — Downed/revive/bleed-out/Dead → home; keep-everything — NO STORY → story it (ADR exists)
• TR-combat-010 — soft-close first on the host tick — NO STORY → story it (ADR exists)
• TR-combat-014 — same-tick mutual kill: enemy damage first, both apply — NO STORY → story it (ADR exists)
• TR-combat-015 — combat state never persisted — NO STORY → story it (ADR exists)

Presentation layer gaps

• TR-ui-002 — co-op affordances — NO STORY → story it (ADR exists)
• TR-tint-004 — flipbook animation via synced frameIndex — NO ADR → write the ADR — see Known Gaps

Feature layer gaps (lower priority — Gate 0 / not yet designed for implementation)

• TR-craft-001 — RecipeDef + 11-row validation — NO STORY → story it (ADR exists)
• TR-craft-002 — KnownRecipes union reconcile — NO STORY → story it (ADR exists)
• TR-craft-003 — craft legality + commit critical section — NO STORY → story it (ADR exists)
• TR-craft-004 — InstanceMetadata table; orphan/mystery reconcile — NO STORY → story it (ADR exists)
• TR-craft-005 — hook values per tier + override; ceilings validated — NO STORY → story it (ADR exists)
• TR-craft-006 — durability drain from events; instant repair — NO STORY → story it (ADR exists)
• TR-craft-007 — era gate reads KnownLandTemplates; ItemDef.SourceTemplates — NO STORY → story it (ADR exists)
• TR-craft-008 — craft beat predicted; host commit; no occupancy lock — NO ADR → write the ADR — see Known Gaps
• TR-craft-009 — schema-negatives; instant swap equip — NO STORY → story it (ADR exists)
• TR-craft-010 — stationRange one knob, two semantics (Craft reach / BB cost draw) — NO STORY → story it (ADR exists)
• TR-bb-001 — StructureDef + 12-row validation — NO STORY → story it (ADR exists)
• TR-bb-002 — StructureInstance registry; replication — NO STORY → story it (ADR exists)
• TR-bb-004 — placementLegality 8 conjuncts, pure; one critical section — NO STORY → story it (ADR exists)
• TR-bb-005 — demolishLegality; refund to CARRY; relic reconcile — NO STORY → story it (ADR exists)
• TR-bb-006 — two station predicates; storage placement spawns SharedStorage — NO STORY → story it (ADR exists)
• TR-bb-007 — wall colliders; EC21 owner-rail correction — NO STORY → story it (ADR exists)
• TR-bb-010 — EC21 four-neighbour ring-check algorithm pinned — NO STORY → story it (ADR exists)
• TR-bb-011 — host-position read semantics (exact host / one-RTT remote) — NO STORY → story it (ADR exists)
• TR-ai-001 — host-simulated flat state machines; no client AI — NO STORY → story it (ADR exists)
• TR-ai-002 — separation steering; aggro/leash/de-aggro heal — NO ADR → write the ADR — see Known Gaps
• TR-ai-003 — maxUninterruptibleTelegraphsPerTarget = 1 — NO STORY → story it (ADR exists)
• TR-ai-004 — composition pure of (template, variationSeed); ephemeral — NO STORY → story it (ADR exists)
• TR-ai-005 — density monotonic load-check; only EnterTelegraph — NO STORY → story it (ADR exists)

History