7  Work Breakdown Structure

7.1 Overview

This chapter defines the project Work Breakdown Structure and serves as the central task tracker. Tasks link directly to the sections where work is needed.

For current implementation status across all repositories, see Section 1.3 on the index page.

7.2 Work Breakdown Structure Tree

• 1.0 AI-Augmented MBSE via MCP Project
  • 1.1 Project Management
    • 1.1.1 Planning & Coordination
    • 1.1.2 Technical Reviews (SRR, PDR, CDR)
    • 1.1.3 Risk Management
  • 1.2 Systems Engineering
    • 1.2.1 Systems Engineering Plan (SEP)
    • 1.2.2 Stakeholder Analysis
    • 1.2.3 System Requirements Specification (SyRS)
    • 1.2.4 Architecture Design Description (ADD)
    • 1.2.5 Verification & Validation Plan (VVP)
    • 1.2.6 Requirements Traceability Matrix (RTM)
  • 1.3 Software Development
    • 1.3.0 Phase 0: Go Prototype (Superseded)
      • 1.3.0.1 Server scaffold (Go, MCP SDK)
      • 1.3.0.2 Basic sysml_parse tool
      • 1.3.0.3 Example resources
    • 1.3.1 Phase 1: tree-sitter-sysml Grammar Foundation
      • 1.3.1.1 Grammar scaffold (tree-sitter-cli, bindings)
      • 1.3.1.2 Dual CI: GitHub Actions + GitLab CI
      • 1.3.1.3 Core grammar (package, part def, part)
      • 1.3.1.4 Corpus test suite (target: 100% pass)
      • 1.3.1.5 Training file coverage tracking (milestone: 10%)
    • 1.3.2 Phase 2: Extended Grammar + Playground
      • 1.3.2.1 Extended grammar (requirement def, requirement)
      • 1.3.2.2 Extended grammar (action, item, port)
      • 1.3.2.3 Extended grammar (connection, allocation)
      • 1.3.2.4 GitLab Pages playground (WASM) — Removed from scope
      • 1.3.2.5 Training file coverage (milestone: 50%)
    • 1.3.3 Phase 3: open-mcp-sysml Integration
      • 1.3.3.1 Rust workspace setup
      • 1.3.3.2 tree-sitter-sysml Rust bindings integration
      • 1.3.3.3 RepoClient trait + GitLab implementation
      • 1.3.3.4 MCP server scaffold (rmcp)
      • 1.3.3.5 sysml_parse tool (tree-sitter backend)
      • 1.3.3.6 repo_list_files, repo_get_file tools
      • 1.3.3.7 Example resources
    • 1.3.4 Phase 4: HTTP Transport (Optional)
      • 1.3.4.1 Streamable HTTP server
      • 1.3.4.2 CORS configuration
    • 1.3.5 kebnf-to-tree-sitter (Spec-Driven Grammar)
      • 1.3.5.1 KEBNF parser (Chumsky 1.0)
      • 1.3.5.2 Tree-sitter emitter
      • 1.3.5.3 Semantic mapping generator
      • 1.3.5.4 Iterative conflict resolution
      • 1.3.5.5 SysML v2 case study
    • 1.3.6 sysml-grammar-benchmark
      • 1.3.6.1 Repository scaffold
      • 1.3.6.2 Quarto + D3 dashboard
      • 1.3.6.3 Parser adapters (tree-sitter, kebnf-generated)
      • 1.3.6.4 Corpus submodules (OMG, GfSE, Advent)
      • 1.3.6.5 GitLab CI pipeline
      • 1.3.6.6 External parser comparison (sysml.rs, MontiCore)
  • 1.4 Infrastructure
    • 1.4.1 Repository Setup
    • 1.4.2 CI/CD Pipeline (software)
    • 1.4.3 CI/CD Pipeline (documentation)
    • 1.4.4 Container Build & Registry
  • 1.5 Documentation
    • 1.5.1 Quarto Book Setup
    • 1.5.2 Chapter Authoring
    • 1.5.3 GitLab Pages Deployment
    • 1.5.4 Software README/CONTRIBUTING
    • 1.5.5 Literature Review Chapter
      • 1.5.5.1 Paper inventory and citations
      • 1.5.5.2 Individual paper summaries
      • 1.5.5.3 Synthesis and gap analysis
    • 1.5.6 Ecosystem Chapter
      • 1.5.6.1 Sensmetry/Sysand analysis
      • 1.5.6.2 SysGit analysis
      • 1.5.6.3 Open source parser inventory
      • 1.5.6.4 Collaboration strategy
    • 1.5.7 Ecosystem Outreach
      • 1.5.7.1 Sensmetry forum/email outreach
      • 1.5.7.2 tree-sitter org submission prep
  • 1.6 External Deliverables
    • 1.6.1 GVSETS 2026 Paper
      • 1.6.1.1 GVSETS Abstract
      • 1.6.1.2 GVSETS Draft (Mar 23)
      • 1.6.1.3 GVSETS Final (Jun 5)
    • 1.6.2 Grammar Transposition Paper (2026)
      • 1.6.2.1 kebnf-to-tree-sitter tool complete
      • 1.6.2.2 Paper outline
      • 1.6.2.3 Draft submission (Q3-Q4 2026)
    • 1.6.3 INCOSE 2027 Benchmark Paper (Future)
      • 1.6.3.1 Task design (Q3 2026)
      • 1.6.3.2 Pilot study (Q4 2026)
      • 1.6.3.3 Paper submission (Q3 2027)
    • 1.6.4 Capstone Submission (Apr 25)

7.3 1.1 Project Management

7.3.1 1.1.1 Project Planning

Per [1, Sec. 2.3.4.1].

• Define project objectives, scope, constraints - Section 6.1
• Develop breakdown structures (WBS) - This chapter
• Establish schedule with milestones - Section 6.5
• Generate SEMP/SEP - Section 6.2

7.3.2 1.1.2 Technical Reviews

Per [1, Sec. 2.1.4].

• SRR - Section 6.9 (Complete Feb 14)
• PDR - Section 6.9 (Complete Feb 14)
• CDR - Section 6.9

7.3.3 1.1.3 Risk Management

Per [1, Sec. 2.3.4.4].

• Identify risks and opportunities - Section 6.8
• Establish risk thresholds and categories - Section 6.8
• Define treatment strategies - Section 6.8

7.4 1.2 Systems Engineering

7.4.1 1.2.1 Systems Engineering Plan (SEP)

Per [1, Sec. 2.3.4.1].

• Life cycle model definition - Section 6.2
• Technical review entry/exit criteria - Section 6.3
• Configuration management approach - Section 6.7

7.4.2 1.2.2 Stakeholder Analysis

Per [1, Sec. 2.3.5.2].

• Identify stakeholders with interests - Section 8.1
• Establish stakeholder management approach - Section 8.2
• Develop operational concept - Section 10.2.2
• Define stakeholder needs (SN-001 through SN-015) - Section 8.3
• Transform needs to stakeholder requirements (SR-001 through SR-015) - Section 8.4
• Consolidate stakeholders (rename Technical Users → MBSE Practitioners, remove Defense/Aerospace)
• Elevate SysML v2 Implementers importance, add spec compliance requirements
• Add traceability anchors and cross-references throughout
• Define validation criteria for stakeholder needs/requirements

7.4.3 1.2.3 System Requirements Specification (SyRS)

Per [1, Sec. 2.3.5.3].

• Define functional boundary of system - Section 9.2
• Define system functions with performance - Section 9.3.1
• Define constraints (operational, regulatory) - Section 9.5
• Define verification criteria per requirement - Section 9.6
• Analyze requirements (complete, consistent, feasible) - Section 9.7
• Research SysML v2 parser approaches (subset vs full compliance) - Section 12.2
• Add SysML v2 compliance requirements (FR-SYS-006, 007, 008)
• Document supported grammar subset with coverage rationale - Section 12.2
• Add traceability anchors and cross-references to FR/NFR tables

7.4.4 1.2.4 Architecture Design Description (ADD)

Per [1, Sec. 2.3.5.4].

• Identify architecture viewpoints - Section 10.1
• Define system context and boundary - Section 10.2
• Synthesize candidate architectures - Section 10.4
• Select architecture via trade study - Section 2.7
• Define interfaces (internal/external) - Section 10.10
• Allocate requirements to elements - Section 10.12

7.4.5 1.2.5 Verification & Validation Plan (VVP)

Per [1, Secs. 2.3.5.9, 2.3.5.11].

• Define verification scope and strategy - Section 11.1
• Select verification methods per requirement - Section 11.2
• Define verification success criteria - Section 11.3
• Plan enabling systems (test tools, CI) - Section 11.4
• Define validation approach (stakeholder acceptance) - Section 11.8

7.4.6 1.2.6 Requirements Traceability Matrix (RTM)

Per [1, Sec. 3.2.3].

• Stakeholder needs → Stakeholder requirements - Section 16.1
• Stakeholder requirements → System requirements - Section 16.2
• System requirements → Architecture elements - Section 16.3
• System requirements → Test cases - Section 16.4

7.5 1.3 Software Development

7.5.1 Phase 0: Go Prototype (Superseded)

• 1.3.0.1 Server scaffold (Go, MCP SDK) - Superseded
• 1.3.0.2 Basic sysml_parse tool - Superseded
• 1.3.0.3 Example resources - Superseded

Note (Feb 9, 2026): Go prototype superseded by Rust + tree-sitter implementation for GitLab Knowledge Graph alignment and community grammar reuse.

7.5.2 Phase 1: tree-sitter-sysml Grammar Foundation

• 1.3.1.1 Grammar scaffold (tree-sitter-cli, all bindings) - Week 5
• 1.3.1.2 Dual CI: GitHub Actions + GitLab CI - Week 5
• 1.3.1.3 Core grammar: package, part def, part - Week 5
• 1.3.1.4 Corpus test suite (87/87 passing) - Week 5
• 1.3.1.5 Training file coverage tracking (100%) - Week 5

Status (Feb 11, 2026): Phase 1 complete. Grammar scaffold with all bindings, 87/87 corpus tests passing, 100% training file parse rate.

7.5.3 Phase 2: Extended Grammar + Playground

• 1.3.2.1 Extended grammar: requirement def, requirement - Week 5
• 1.3.2.2 Extended grammar: action, item, port - Week 5
• 1.3.2.3 Extended grammar: connection, allocation - Week 5
• 1.3.2.4 GitLab Pages playground (WASM) - Removed from scope
• 1.3.2.5 Training file coverage milestone: 100% - Week 5
• 1.3.2.6 Context-sensitive definition bodies - Week 5
• 1.3.2.7 Negative test framework (7/8 passing) - Week 5
• 1.3.2.8 Technical debt documentation - Week 5

Status (Feb 10, 2026): Phase 2 complete. Full grammar coverage achieved ahead of schedule. All constructs implemented: states, constraints, verification, analysis, views, metadata, occurrences, events, messages, and more.

7.5.4 Phase 3: open-mcp-sysml Integration

• 1.3.3.1 Rust workspace setup - Week 5
• 1.3.3.2 tree-sitter-sysml Rust bindings integration - Week 5
• 1.3.3.3 RepoClient trait + GitLab implementation - Complete
• 1.3.3.4 MCP server scaffold (rmcp) - Week 5
• 1.3.3.5 sysml_parse tool (tree-sitter backend) - Week 5
• 1.3.3.6 repo_list_files, repo_get_file tools - Complete
• 1.3.3.7 Example resources - Deferred
• 1.3.3.8 Cache ID + Summary optimization pattern - Phase 2 PRD ready
• 1.3.3.9 L0/L1/L2 tiered responses - Week 5

Status (Feb 14, 2026): Phase 1 Complete. Tree-sitter integration working with 5 MCP tools: sysml_parse (L0/L1/L2), sysml_validate, sysml_list_definitions, repo_list_files, repo_get_file. 22 tests passing. 100% training file coverage. Phase 2 PRD ready for 7 token reduction strategies.

7.5.5 Phase 4: HTTP Transport (Optional)

• 1.3.4.1 Streamable HTTP server - Week 11+
• 1.3.4.2 CORS configuration - Week 11+

7.5.6 Phase 5: kebnf-to-tree-sitter (Spec-Driven Grammar)

• 1.3.5.1 KEBNF format documentation - Complete
• 1.3.5.2 Tool architecture design - Complete
• 1.3.5.3 KEBNF parser (Chumsky 1.0) - Complete (640/640 rules)
• 1.3.5.4 Tree-sitter grammar.js emitter - Complete (produces output with conflicts)
• 1.3.5.5 Iterative conflict resolution - In Progress (335+ conflicts)
• 1.3.5.6 Semantic mapping generator - Pending
• 1.3.5.7 SysML v2 case study - Q2 2026

Status (Feb 12, 2026): Parser and emitter complete. Generated grammar has 335+ conflicts requiring iterative resolution. Strategy selected: resolve conflicts one at a time, document progress for INCOSE paper. See Section 12.3 for implementation details.

7.5.7 Phase 6: sysml-grammar-benchmark

• 1.3.6.1 Repository scaffold - Complete
• 1.3.6.2 PRD and AGENTS.md - Complete
• 1.3.6.3 Quarto + D3 dashboard - In Progress
• 1.3.6.4 Parser adapters (tree-sitter) - Pending
• 1.3.6.5 Corpus submodules (OMG, GfSE, Advent) - Pending
• 1.3.6.6 GitLab CI pipeline - Pending
• 1.3.6.7 External parser comparison - Pending

Purpose: Automated grammar benchmark dashboard comparing SysML v2 parser implementations. Provides objective evidence for “production-ready grammar” claims. Community deliverable.

7.6 1.4 Infrastructure

• 1.4.1 Repository Setup - Complete
• 1.4.2 CI/CD Pipeline (tree-sitter-sysml) - Complete (GitHub Actions + GitLab CI)
• 1.4.3 CI/CD Pipeline (documentation) - Complete (HTML + PDF)
• 1.4.4 CI/CD Pipeline (open-mcp-sysml) - Pending
• 1.4.5 Container Build & Registry - Pending

7.7 1.5 Documentation

• 1.5.1 Quarto Book Setup - Complete
• 1.5.2 Chapter Authoring - Ongoing
  • Ch 12a: Spec-driven approach (kebnf-to-tree-sitter)
  • Ch 12b: Grammar retrospective
  • Ch 12c: Brute force approach
• 1.5.3 GitLab Pages Deployment - Complete
• 1.5.4 tree-sitter-sysml README/CONTRIBUTING/AGENTS.md - Complete
• 1.5.5 open-mcp-sysml documentation - Pending

7.7.1 1.5.6 Literature Review Chapter

• 1.5.6.1 Paper inventory and citations (15 papers) - Complete
• 1.5.6.2 Individual paper summaries - Pending
  • Li et al. (2025) - LLM-Assisted Semantic Alignment for SysML v2
  • Hendricks & Cicirello (2025) - Text to Model via SysML
  • Darm et al. (2025) - Inference-Time Intervention
  • Jerry et al. (2026) - LLM-Driven Accessible Interface
  • Otten et al. (2026) - LLM Risk Assessment Framework
  • Giannouris & Ananiadou (2025) - NOMAD Multi-Agent UML
  • Erikstad (2024) - Multi-Agent LLMs and MBSE
  • Ferrari et al. (2024) - Requirements to UML Sequence Diagrams
  • Rouabhia & Hadjadj (2025) - UML Class Diagram Augmentation
  • Mao et al. (2025) - UML to Code Generation
  • Trendowicz et al. (2026) - DeepQuali User Story Quality
  • Bader et al. (2024) - User-Centric MBSE with GenAI
  • Crabb & Jones (2024) - Accelerating MBSE with GenAI
  • Neema et al. (2025) - Evaluating Engineering AGI
• 1.5.6.3 Synthesis and gap analysis - Pending

See Section 3.1 for chapter content.

7.7.2 1.5.7 Ecosystem Chapter

• 1.5.7.1 Sensmetry/Sysand detailed analysis - Complete
• 1.5.7.2 SysGit feature comparison - Complete
• 1.5.7.3 Open source parser inventory - Complete
• 1.5.7.4 Model collections identified - Complete
• 1.5.7.5 MCP landscape gap analysis - Complete
• 1.5.7.6 Integration architecture diagram - Complete
• 1.5.7.7 Collaboration strategy execution - Pending

See Section 5.1 for chapter content.

7.7.3 1.5.8 Ecosystem Outreach

• 1.5.8.1 Draft Sensmetry forum post - Pending
• 1.5.8.2 Sensmetry email outreach - Pending
• 1.5.8.3 tree-sitter org submission prep - Pending
• 1.5.8.4 GfSE model collection outreach - Pending

7.8 1.6 External Deliverables

7.8.1 1.6.1 GVSETS 2026 Paper

Repository: gvsets/ (separate LaTeX project)

• 1.6.1.1 LaTeX template setup - Complete
• 1.6.1.2 Abstract written - Complete
• 1.6.1.3 Draft paper submitted - Due Mar 23
• 1.6.1.4 Final paper submitted - Due Jun 5
• 1.6.1.5 Final presentations due - Due Jul 23
• 1.6.1.6 Paper presentation (Novi, MI) - Aug 11

See Section B.2 for paper outline.

7.8.2 1.6.2 Grammar Transposition Paper (2026)

• 1.6.2.1 kebnf-to-tree-sitter tool design - Complete
• 1.6.2.2 Paper outline - Complete (Section B.3)
• 1.6.2.3 Tool implementation - In Progress
• 1.6.2.4 Case study execution - Q2 2026
• 1.6.2.5 Paper draft submission - Q3-Q4 2026

7.8.3 1.6.3 INCOSE 2027 Benchmark Paper (Future)

• 1.6.3.1 Paper outline - Complete (Section B.4)
• 1.6.3.2 Task design - Q3 2026
• 1.6.3.3 Pilot study - Q4 2026
• 1.6.3.4 Paper submission - Q3 2027

7.8.4 1.6.4 Capstone Submission

• 1.6.4.1 Final documentation package - Due Apr 25
• 1.6.4.2 Defense presentation - Apr 2026

7.9 Milestones

Milestone	Planned	Actual	Status
Plan finalized, repos set up	Jan 18	Jan 18	Complete
SRR - SEP, SyRS baselined	Jan 25	Feb 14	Complete
PDR - ADD, VVP approved	Feb 8	Feb 14	Complete
tree-sitter-sysml Phase 1+2 (100% coverage)	Feb 15	Feb 10	Complete
tree-sitter-sysml 99.6% external coverage	-	Feb 12	Complete
MCP server Phase 1 (tree-sitter integration)	Feb 22	Feb 13	Complete
Benchmark vignettes executed	-	-	Pending
sysml-grammar-benchmark dashboard	-	-	Pending
GVSETS quantitative section complete	-	-	Pending
GVSETS draft submitted	Mar 23	-	Pending
GVSETS notification of acceptance	May 1	-	Pending
GVSETS final submitted	Jun 5	-	Pending
GVSETS presentations due	Jul 23	-	Pending
GVSETS paper presentation (Novi, MI)	Aug 11	-	Pending
CDR - V&V complete	-	-	Pending
Capstone final delivery	Apr 25	-	Pending

Schedule Note (Feb 14, 2026): Removed fixed week targets for non-GVSETS work items. GVSETS publication timeline updated per NDIA. Remaining work prioritized as backlog rather than date-driven.

7.10 Risk Summary

See Section 6.8 for full risk register.

ID	Risk	L	I	Score	Status
R1	SysML v2 API server difficult to deploy	1	2	2	Mitigated — repo tools work without API
R2	GVSETS deadline aggressive	2	2	4	Open — benchmark execution is critical path
R3	Stakeholder availability	1	2	2	Closed — SRR/PDR completed Feb 14
R4	Rust MCP SDK/tree-sitter limitations	1	3	3	Closed — proven by working implementation
R5	Container testing blocked locally	3	1	3	Open — CI-only, documented in VVP
R6	Scope expansion	2	1	2	Mitigated — managed, enriched ecosystem understanding
R7	SysML v2 spec changes	1	2	2	Closed — spec stable, 99.6% coverage
R8	Grammar needs external scanner	2	2	4	Closed — 100% coverage without scanner
R9	Tree-sitter org may not accept	2	1	2	Open — standalone value regardless

[1]

INCOSE, INCOSE systems engineering handbook, 5th ed. Wiley, 2023.