Fantasy-Map-Generator/_bmad-output/planning-artifacts/implementation-readiness-report-2026-03-12.md

stepsCompleted	inputDocuments	excludedDocuments	missingDocuments
step-01-document-discovery	_bmad-output/planning-artifacts/prd-layered-map-dom-split.md _bmad-output/planning-artifacts/architecture-layered-map-dom-split.md _bmad-output/planning-artifacts/epics.md	_bmad-output/planning-artifacts/prd.md _bmad-output/planning-artifacts/architecture.md	UX design document

Implementation Readiness Assessment Report

Date: 2026-03-12 Project: Fantasy-Map-Generator

Document Discovery

PRD Files Found

Whole Documents:

• _bmad-output/planning-artifacts/prd-layered-map-dom-split.md (8695 bytes, modified Mar 12 23:06:55 2026) [selected]
• _bmad-output/planning-artifacts/prd.md (31818 bytes, modified Mar 12 03:42:10 2026) [excluded]

Architecture Files Found

Whole Documents:

• _bmad-output/planning-artifacts/architecture-layered-map-dom-split.md (7274 bytes, modified Mar 12 23:22:49 2026) [selected]
• _bmad-output/planning-artifacts/architecture.md (50648 bytes, modified Mar 12 19:00:05 2026) [excluded]

Epics and Stories Files Found

Whole Documents:

• _bmad-output/planning-artifacts/epics.md (22401 bytes, modified Mar 12 23:55:41 2026) [selected]

UX Files Found

• None found

Discovery Issues

• Duplicate document families exist for PRD and Architecture. This assessment uses the layered-map documents explicitly requested by the user and excludes the baseline documents from scope.
• No UX design artifact was found. Readiness assessment will proceed without UX-specific validation.

Assessment Scope

This readiness assessment is scoped to:

• _bmad-output/planning-artifacts/prd-layered-map-dom-split.md
• _bmad-output/planning-artifacts/architecture-layered-map-dom-split.md
• _bmad-output/planning-artifacts/epics.md

PRD Analysis

Functional Requirements

FR1: Users can reorder layers in any sequence supported today, regardless of whether the layer is implemented in SVG or WebGL. FR2: Visibility toggles behave exactly as they do now. FR3: Editing and pointer interaction remain correct after layer splitting. FR4: Shared styles, filters, masks, and text path resources remain available where needed. FR5: Existing layer-based workflows continue to function without exposing rendering implementation details. FR6: Export produces equivalent output to the current behavior for supported layers. FR7: Legacy code paths that depend on svg, viewbox, or one selector scope have a compatibility path during migration.

Total FRs: 7

Non-Functional Requirements

NFR1: The architecture must support incremental migration rather than a flag-day rewrite. NFR2: Test design and execution are out of scope for this implementation tranche and will be handled in a separate follow-up activity. NFR3: Layer order changes must update all runtime surfaces atomically. NFR4: Performance must not regress for existing SVG-only layers. NFR5: The architecture must remain compatible with the existing global-variable runtime model.

Total NFRs: 5

Additional Requirements

• The initiative is explicitly constrained to preserve current user-visible layer controls, visibility behavior, edit workflows, and output quality while the runtime architecture changes underneath.
• Shared map state remains globally accessible, but globals tied to one concrete SVG root may be narrowed, redefined, or placed behind compatibility adapters.
• Shared defs, masks, filters, symbols, and text paths are first-class requirements rather than deferred cleanup.
• The codebase needs an inventory and migration plan for hotspots that assume one map SVG or one shared selector scope.
• Automated and manual testing are out of scope for this implementation tranche and deferred until the new layer model stabilizes.
• The current PRD leaves several architecture-shaping questions open, including which layers are low-risk for splitting first and how export assembly should be sourced.

PRD Completeness Assessment

The PRD is sufficient to define the product goal, scope boundaries, functional requirements, non-functional requirements, and acceptance themes for the layered-runtime initiative. It is intentionally incomplete on implementation specifics and leaves several open questions for architecture and execution planning, which is acceptable because those details are partially answered by the selected architecture document. The main residual gap at the PRD layer is that it does not name the initial low-risk split candidates or define a UX artifact, so implementation readiness depends on the architecture and epics compensating for that missing specificity.

Epic Coverage Validation

Epic FR Coverage Extracted

FR1: Covered in Epic 2 and Epic 3 FR2: Covered in Epic 2 and Epic 3 FR3: Covered in Epic 2 and Epic 3 FR4: Covered in Epic 1 and Epic 4 FR5: Covered in Epic 1, Epic 2, and Epic 3 FR6: Covered in Epic 4 FR7: Covered in Epic 1

Total FRs in epics: 7

Coverage Matrix

FR Number	PRD Requirement	Epic Coverage	Status
FR1	Users can reorder layers in any sequence supported today, regardless of whether the layer is implemented in SVG or WebGL.	Epic 2 Story 2.4; Epic 3 Stories 3.1, 3.2, 3.4	Covered
FR2	Visibility toggles behave exactly as they do now.	Epic 2 Story 2.4; Epic 3 Stories 3.2, 3.4	Covered
FR3	Editing and pointer interaction remain correct after layer splitting.	Epic 2 Stories 2.2, 2.3, 2.5; Epic 3 Story 3.3	Covered
FR4	Shared styles, filters, masks, and text path resources remain available where needed.	Epic 1 Stories 1.1, 1.6; Epic 4 Stories 4.3, 4.4	Covered
FR5	Existing layer-based workflows continue to function without exposing rendering implementation details.	Epic 1 Stories 1.1 to 1.6; Epic 2 Stories 2.1 to 2.5; Epic 3 Stories 3.1 to 3.4	Covered
FR6	Export produces equivalent output to the current behavior for supported layers.	Epic 4 Stories 4.1 to 4.4	Covered
FR7	Legacy code paths that depend on svg, viewbox, or one selector scope have a compatibility path during migration.	Epic 1 Story 1.5	Covered

Missing Requirements

No PRD functional requirements are missing from the current epics and stories document.

Residual traceability note:

• FR3 and FR5 are covered broadly, but validation depends on maintaining story acceptance criteria discipline during implementation because these requirements span many modules and workflows.
• FR4 and FR6 coverage is present, but export fidelity remains low priority and therefore carries sequencing risk rather than outright coverage risk.

Coverage Statistics

• Total PRD FRs: 7
• FRs covered in epics: 7
• Coverage percentage: 100%

UX Alignment Assessment

UX Document Status

Not Found.

Alignment Issues

• No dedicated UX planning artifact exists for this initiative, so there is no separately reviewed source for interaction flows, affordances, edge-case behavior, or acceptance-level user experience constraints.
• The PRD clearly implies a user-facing application because it requires stable layer controls, visibility behavior, edit workflows, and output quality, but those expectations are not decomposed into a dedicated UX document.
• The architecture preserves current user-visible behavior and interaction correctness, which partially compensates for missing UX documentation, but it does not replace explicit UX decisions for complex editing workflows.

Warnings

• UX is implied by the problem and requirements, but no UX artifact was provided for readiness validation.
• Implementation can proceed for this architecture tranche because the stated goal is behavioral parity rather than new interaction design, but QA and acceptance review later will carry extra ambiguity around interaction regressions.
• If future stories introduce changed controls, changed affordances, or non-parity interaction behavior, a UX artifact should be created before implementation continues.

Epic Quality Review

Best Practices Compliance Summary

• Epic independence is mostly preserved in sequence: Epic 2 can build on Epic 1, Epic 3 can build on Epics 1 and 2, and Epic 4 can remain low-priority and isolated to export.
• Within-epic forward dependencies are mostly controlled. The story order generally builds from infrastructure to usage without explicit dependence on future stories.
• Traceability is present because every story includes an Implements line and the document includes a coverage map.

🔴 Critical Violations

1. The epic structure is phase-driven technical delivery, not user-value-driven delivery.

• Epic 1 is explicitly foundation work: scene, defs, registry, layer lifecycle, compatibility contracts.
• Epic 2 and Epic 3 are migration phases keyed to renderer architecture.
• Epic 4 is an export pipeline phase.
• This directly conflicts with the workflow standard that epics should organize around user value rather than technical layers or infrastructure milestones.
• Recommendation: accept these as implementation phases if that is the deliberate exception, but mark the document as not fully compliant with BMAD epic-quality rules.

2. Several stories are technical maintenance stories rather than meaningful user capabilities.

• Examples: Story 1.2 Add Scene Module for Shared Camera State, Story 1.3 Add Layers Registry as the Ordering Source of Truth, Story 1.4 Add Layer Surface Lifecycle Ownership, Story 3.1 Register WebGL Surfaces in the Shared Layer Model, Story 4.1 Add Export Participation Metadata to the Layer Registry.
• These may be valid implementation work items, but they are not strong user stories under the workflow’s own standard.
• Recommendation: either convert them into engineering tasks under broader user-facing stories, or explicitly classify this artifact as an architecture-delivery plan rather than pure user-story decomposition.

🟠 Major Issues

1. Acceptance criteria are testable but often too abstract for direct implementation handoff.

• Many ACs assert outcomes like "existing visual behavior remains unchanged" or "workflow behaves the same way it did before" without naming concrete layers, tools, or observables.
• This makes implementation review and later QA interpretation more subjective than it should be.
• Recommendation: add concrete examples or named validation targets per story, especially for split-layer migrations and export fidelity.

2. Low-risk SVG migration scope is still undefined at story level.

• Epic 2 depends on "approved low-risk SVG layers," but the selected documents never identify which layers those are.
• Story 2.2 and Story 2.3 are therefore not fully actionable without another planning decision.
• Recommendation: add a shortlist of candidate layers or a prerequisite decision artifact before implementation begins.

3. Story sizing is uneven in a few places.

• Story 2.3, Story 3.2, Story 3.3, and Story 4.2 through 4.4 may each span multiple modules, cross-layer behaviors, and regression-sensitive flows.
• They may be larger than a single clean dev-agent session depending on the current codebase reality.
• Recommendation: consider splitting the highest-risk stories by concrete layer set, runtime behavior, or export feature class.

🟡 Minor Concerns

1. Missing UX artifact increases ambiguity around interaction-parity acceptance.
2. The document is consistent, but several stories are written from the perspective of a "map maintainer" rather than a direct end user, which weakens the user-story framing.
3. Export remains intentionally low priority, which is fine strategically, but it means FR6 readiness is later than the rest of the plan and should be tracked as a sequencing risk.

Dependency Review

• No explicit within-epic forward dependency violations were found.
• No starter-template requirement exists in the architecture, so there is no missing greenfield bootstrap story.
• The brownfield migration shape is reflected appropriately through compatibility and incremental split stories.
• Database/entity timing rules are not relevant to this initiative and no analogous upfront persistence anti-pattern was found.

Quality Review Verdict

The current epics and stories are workable as an implementation roadmap for an architectural migration, but they do not fully satisfy the workflow's own best-practice standard for user-value-first epics and user-facing stories. This is the main readiness defect, and it should be treated as a conscious tradeoff rather than ignored.

Summary and Recommendations

Overall Readiness Status

READY

Critical Issues Requiring Immediate Action

1. No blocking issues remain because the user explicitly accepted the phase-based migration roadmap as a deliberate exception to the workflow's default epic-design standard.
2. The previously identified epic/story framing issues remain documented as accepted planning debt and should be monitored during implementation.

Recommended Next Steps

1. Proceed into sprint planning and story execution using the current phase-based roadmap.
2. Tighten acceptance criteria opportunistically during story preparation, especially where parity or export behavior is still abstract.
3. Identify the first low-risk SVG layer candidates before Epic 2 implementation work starts.
4. Add a lightweight UX parity note if future implementation changes interaction behavior instead of preserving parity.

Final Note

This assessment identified 8 issues across 3 severity categories, plus 1 scope warning about missing UX documentation. None of the PRD functional requirements are missing from the plan, and the architecture-to-epics traceability is coherent. On 2026-03-13, the user explicitly accepted the phase-driven engineering roadmap as a conscious exception to the workflow's default user-value-first epic standard. With that exception accepted, the planning set is cleared for implementation and the readiness status is marked READY.