Flagship case study

TraverseOps

Public MapLibre sample app for locating field assets, recording inspections, opening work orders, importing updates, and reporting status from one map-first workflow.

Project type
Field operations web app
Domain
Municipal asset operations
Role
Solo builder: product, UI, data model, field flow
Last updated
May 2026

Quick summary

TraverseOps in 30 seconds.

Frontend, internal-tools, map UI, and field-workflow proof.

What this proves

Map-first operational UI, workflow modeling, and production-risk awareness.

Core technical work

Asset map, selected-record state, inspections, work orders, imports, reports, roles, and sample data.

Best path

Open the app, then scan summary, field loop, data model, and hardening.

Known limits

Sample data only; no real auth, database, municipal data, live GIS, offline sync, audit logs, server validation, or public tests.

Try this demo

Try this in 2 minutes.

Sample records only; this shows workflow and UI state.

  1. Filter assets.Use Needs inspection or Open work.
  2. Select an asset.Click a marker or card and watch the detail sheet update.
  3. Inspect related work.Open Inspections or Work orders tied to the asset.
  4. Review imports and reports.Validate sample rows, then open Reports.
TraverseOps public app showing a map workspace, sample asset markers, a selected asset panel, and operational controls
Public workspace with sample assets, filters, markers, and selected-asset context.

Visual proof

Map context drives the workflow.

Location comes first; asset state, inspections, work orders, imports, and reports follow the selected record.

What to notice

  • Status filters update the map without leaving the workspace.
  • The asset sheet keeps priority, open work, and next actions close.
  • The page models workflow, not production auth, municipal data, or live GIS.

TL;DR

TraverseOps in 15 seconds.

Problem
Field teams lose time when maps, records, inspections, and work orders are split.
Built
MapLibre-style app with sample assets, selected context, inspections, work orders, imports, reports, and roles.
Stack
HTML, CSS, JavaScript, MapLibre-style UI, Supabase-shaped relational model, GitHub Pages.
Demo
Public sample app using bundled sample records for safe review.
Result
Product prototype connecting map lookup, task records, forms, and reports around the same asset data.
Current limitation
No real auth, production database, municipal data, live GIS, offline sync, audit logs, or server import validation.

01 / Summary

Records, maps, and follow-up work in one app.

TraverseOps connects map location, asset state, inspections, work orders, imports, reports, and roles with public-safe sample records.

Technical problem

Location, history, work state, imports, reports, and roles need one selected record.

Constraints

The public app uses sample data and omits auth, offline sync, audit trails, and production GIS.

Approach

I modeled a MapLibre workspace with relational sample data, filters, panels, and direct inspection/work-order paths.

Tradeoff

The public version favors easy review over permissions, audit logging, and offline conflict resolution.

Next improvement

Production would add RBAC, offline sync, import validation, audit logs, device testing, and reliable map sources.

What it demonstrates: Product modeling, map UI decisions, multi-entity data, field-device thinking, and production-risk awareness.

Why this matters

It connects field data to field work.

Operational problem

Crews and supervisors need maps, records, inspections, and work orders in one path.

Useful approach

Location is the entry point; the selected asset owns history, status, imports, reports, and follow-up work.

Employer signal

The project shows multi-entity data thinking, mobile UI judgment, and production planning.

Production readiness

Solid model; sample records.

Already solid

Assets, inspections, work orders, imports, reports, and roles tie to the selected map record.

Public limits

Sample data only; no accounts, permissions, audit trails, offline sync, or GIS feeds.

Production work

Production needs auth, roles, import validation, audit logs, offline conflicts, device tests, map monitoring, and clearer errors.

Security and ops

Operational data needs tenant isolation, least privilege, PII review, backups, logs, and alerts.

02 / What I built

Product model, task structure, and public framing.

  • Modeled assets, inspections, work orders, imports, reports, and roles around field tasks.
  • Built a map-first asset path with filters, selected panels, and inspection/work-order screens.
  • Used sample relationships to show municipal-style operations without real records.
  • Documented public limits and production needs: auth, roles, offline sync, audit logs, validation, and device testing.
  • Framed product modeling, map UI decisions, and production gaps before the app link.

Uses MapLibre and Supabase-style concepts with sample records, not real municipal data or a production backend.

03 / Problem

Crews need shared context at the asset.

Asset work breaks when maps, records, inspections, and work orders live apart. Crews get duplicate typing, delays, and weak handoff.

TraverseOps makes the map the entry point and the selected asset the hub for condition, inspections, work orders, and reports.

04 / Target users

Who the interface is designed for

Field technicians

Need fast lookup, mobile detail views, checklist entry, and obvious next actions.

Supervisors

Need condition trends, prioritized work orders, and clear assets needing attention.

Operations administrators

Need imports, reports, roles, and traceable changes.

05 / Field loop

Map lookup to accountable work.

  1. Find an asset Use the map, filters, or asset list.
  2. Review context Open status, location, type, history, and open work.
  3. Record field activity Create an inspection with condition, checklist, notes, and follow-up.
  4. Turn issues into work Create or update a work order tied to the asset.
  5. Report and improve Spot overdue inspections, unresolved work, import exceptions, and area status.

06 / Tech stack

Stack for a public sample app.

  • MapLibre
  • JavaScript
  • Supabase-style model
  • Sample data
  • GitHub Pages
  • Mobile field UI

Map interaction, panels, and relational records stay separate so sample data can grow toward authenticated field operations.

07 / Map/interface architecture

Map, record, task, and reporting layers stay separate.

TraverseOps architecture Roles use a map workspace with sample assets, imports, inspections, work orders, and reports inside a public boundary.
TraverseOps architecture diagram Field, supervisor, and admin roles work inside a public sample-data boundary. Asset imports feed a registry, the registry feeds the map workspace, and selected assets connect inspections, work orders, and reports. PUBLIC APP USER ROLES Crew / supervisor Admin review paths ASSET IMPORTS Registry records IDs, status, areas MAP LAYER Selected asset Filters and panels INSPECTIONS Field notes Condition history WORK ORDERS Assigned work Priority and owner REPORTS Admin view Open work Import status
Roles, records, map selection, field tasks, and reporting stay separate inside a public sample app.

Public data stays inside a sample boundary. Users select an asset, create inspections and work orders, and view reports from the same records.

  • The map layer answers where and what status needs attention.
  • Inspection and work-order layers capture field events and follow-up work.
  • Reporting/admin layers summarize assets, imports, roles, and open work.

08 / Data model

The data model follows field operations.

Core TraverseOps entities and why they exist.
Entity Typical fields Why it matters
Assets ID, type, coordinates, area, status, condition, last inspected date. Anchor for map display, history, inspection, work, and reporting.
Inspections Asset ID, inspector, timestamp, checklist values, condition, notes, follow-up flag. Captures field observations and history.
Work orders Asset ID, issue summary, priority, status, assignee, due date, source inspection. Turns findings into trackable work.
Imports File name, column mapping, validation result, imported count, rejected rows. Shows bulk data entry without silent corruption.
Reports Date range, area, status, overdue count, completed work, exception groups. Converts records into supervisor status and planning views.
Team roles User, role, permission scope, assigned area, active status. Models field entry, supervision, and admin control.
Status state stays explicit and filters the same records used by map, panels, reports, inspections, and work orders.
const traverseState = {
  assets: [...traverseAssets],
  inspections: [...baseInspections],
  workOrders: [...baseWorkOrders],
  selectedAssetId: "NH-014",
  filter: "all"
};

function visibleAssets() {
  if (traverseState.filter === "all") return traverseState.assets;
  return traverseState.assets.filter((asset) => asset.status === traverseState.filter);
}

Sample-data excerpt; no private municipal records.

09 / Imports

Imports are validation, not blind upload.

TraverseOps frames imports as steps: choose a file, map columns, validate coordinates and IDs, preview rejected rows, then commit valid records.

  • Column mapping makes imports explainable.
  • Validation catches missing coordinates, duplicate IDs, unknown types, and invalid statuses.
  • Import summaries create an admin review point.

10 / Inspection and work-order flow

Inspections create decisions.

A crew selects an asset, records condition and checklist notes, and flags follow-up. Follow-up becomes a work order tied to the same asset.

Inspection entry

Captures condition, checks, notes, and field context.

Work-order creation

Converts findings into priority, status, assignment, due date, and source record.

Status visibility

Keeps open work and inspection freshness visible by asset, area, or urgency.

11 / Public limits

The public app is intentionally bounded.

  • Sample data only; no active municipal dataset or field crew.
  • Roles are represented, but production needs authenticated accounts and server policy.
  • Import flows are UI evidence, not arbitrary-file safety guarantees.
  • Offline sync, GPS, photos, and conflict resolution need production engineering.
  • No public TraverseOps source repository is linked.

12 / Production plan

Before production deployment

The public app shows product shape and data model. Production needs identity, authorization, data quality, offline behavior, security, and recovery guarantees.

Authentication

Accounts and permissions

Public: crew, supervisor, and admin-style flows.

Production: accounts, server roles, row permissions, least privilege, session expiry, and action boundaries.

Offline sync

Reliability in poor connectivity

Public: mobile-friendly field path.

Production: drafts, retry queues, conflicts, sync status, recovery, and unsynced warnings.

Validation

Strict data and state rules

Public: curated sample lifecycle.

Production: validate fields, coordinates, status transitions, priorities, due dates, duplicates, and state changes.

Audit logs

Operational traceability

Public: records that could be auditable.

Production: record who changed assets, inspections, imports, assignments, statuses, and reports.

Error handling

Recovery instead of silence

Public: intended path and product structure.

Production: handle failed saves, map failures, denied permissions, stale records, conflicts, rejected imports, and retries.

Imports

Defensive import validation

Public: imports as a review concept.

Production: file limits, mapping, previews, duplicate checks, coordinate checks, rollback, rejected-row exports, logs, and bulk permissions.

Mobile QA

Field-device testing

Public: desktop/mobile layouts.

Production: phones/tablets, GPS, battery, photos, sunlight readability, and intermittent networks.

Security

Protect records

Public: sample data.

Production: TLS, secrets, rate limits, upload controls, patching, backups, and privacy-aware logs.

Map data

Reliable basemaps and sources

Public: location and status drive the UI.

Production: tile SLAs, cache strategy, fallbacks, geocoding limits, coordinate systems, ownership, and stale-data alerts.

13 / Testing and QA notes

Manual QA covers field assumptions.

Automated tests

No public automated suite yet. Current evidence is manual browser testing, responsive checks, and documented gaps.

Manual checklist

Verify reset, roles, tabs, map selection, filters, forms, imports, and reports.

Browser and device checks

Check maps, forms, tabs, and buttons at phone, tablet, and desktop widths.

Edge cases

Exercise empty data, resets, invalid imports, missing assets, sparse filters, role changes, and long labels.

Known limitations

No automated E2E, GIS validation, offline-conflict simulation, permission tests, or field-device lab testing yet.

14 / Deployment and run notes

Runs in the browser with sample data.

Hosted/run location

Hosted on GitHub Pages. traverseops-demo.html and traverseops-demo.js run client-side with sample data.

Environment/config

No env vars. Roles, filters, imports, reports, and forms use in-browser sample state.

External APIs/services

Explains MapLibre and Supabase-style concepts, but connects to no municipal records, private GIS, or Supabase.

Local development

Run python -m http.server 8000, then open /traverseops-demo.html or /traverseops-case-study.html. No build step.

Secrets and data safety

No secrets belong in the public page. Production would keep keys, GIS credentials, accounts, and records out of client code.

15 / Results

What the project proves

TraverseOps gives visitors a concrete surface to evaluate: map-first field flow, multi-entity records, roles, and production gaps.

  • Models map lookup, inspection, work order, and reporting.
  • Uses realistic entities instead of single-entity CRUD.
  • States public limits clearly.

16 / Screenshots and states

Screenshots

17 / Next improvements

Next improvements

  • Add schema, import validation, and state-machine examples.
  • Expose safe source or architecture notes.
  • Run deeper accessibility checks on map controls, focus order, and mobile forms.

Next step

Review the app, then compare.

TraverseOps covers field operations; Work adds Python automation, Canvas tooling, and browser experiments.