// INFRASTRUCTURE TOOLS

MAINTENANCE WINDOWS,
DONE RIGHT.

MaintWindow manages the full lifecycle of your biannual Shutdown / Startup Procedures document — from event creation and developer assignment through to PDF/DOCX export and email delivery. Every sent document is immutably archived as the institutional record.

Premier v1.0.0 Auth Required meltuc.tech/maintwindow/

2×

Per Year

PDF

+ DOCX Export

Auto

Event Creation

Lock

Immutable History

// DASHBOARD

EVERY UPCOMING WINDOW AT A GLANCE.

The dashboard surfaces all upcoming maintenance events and your five most recent sent documents. A single button triggers the Kronos-driven auto-create logic — no manual date entry needed. Events progress through a clear status pipeline from creation to permanent archive.

Upcoming events sorted by date with status badges
Recent document history with sent-on timestamps
One-click Auto-Create for March 1 and June 1 events
Status pipeline: pending → assigned → previewed → sent → archived

meltuc.tech/maintwindow/dashboard

Upcoming Events 2 active

Jun 1, 2026 shutdown assigned

Sep 1, 2026 startup pending

ASSIGN THE RIGHT PERSON TO EVERY TASK.

Each maintenance event generates a set of task items from the template library. Assign one or more developers to each item with a role — owner, validator, lead_shutdown, or lead_startup. Assignments are saved immediately and locked once the document is sent.

Task items rendered in phase order (Shutdown A–F, Startup A–C)
Multiple assignees per task with distinct roles
Validation steps highlighted with amber badge
Modal-based assignment — no page navigation required
Full read-only lock once document is sent

meltuc.tech/maintwindow/events/3f9a…

Jun 1 Shutdown — Assign

Phase A — Preparation

Notify stakeholders of window

M. Tucker — owner

assigned

Backup production database

unassigned

pending

Validate backup integrity

🔶 Validation step

pending

+ Assign

Preview

Export PDF

// EXPORT & DELIVERY

ONE CLICK FROM PREVIEW TO SENT.

Preview the finished document in-browser before exporting. Download a PDF via WeasyPrint or a DOCX via python-docx — both rendered from the same single Jinja partial, so there is no drift between formats. When ready, email the PDF attachment to the distribution list and lock the event permanently.

HTML preview rendered in the browser before export
PDF download via WeasyPrint
DOCX download via python-docx
Single template source — PDF and DOCX are always identical
Email sends PDF attachment to configurable distribution list
Event locked permanently after send — immutable institutional record

meltuc.tech/maintwindow/events/3f9a…/preview

SHUTDOWN PROCEDURE — Jun 1, 2026

Generated: May 22, 2026 · 7 tasks · 4 developers

Phase A — Preparation

A1 Notify stakeholders M. Tucker

A2 Backup database J. Smith

A3 🔶 Validate backup K. Jones

📄 Export PDF

📝 Export DOCX

📧 Email & Lock

// FULL FEATURE SET

🗓️

Automatic Event Creation

Kronos runs daily at 08:00. Events for March 1 and June 1 are auto-created 30 days before each date — no manual scheduling needed.

👥

Developer Roster

Manage the list of developers available for assignment. Activate or deactivate team members — inactive developers are hidden from the assignment UI.

📋

Task Template Library

A full library of shutdown and startup task items seeded automatically. Includes regular steps and validation (sign-off) steps highlighted in amber.

🎯

Role-Based Assignment

Assign developers with a specific role per task: owner, validator, lead_shutdown, or lead_startup. Multiple assignees per task supported.

👁️

Live Preview

Preview the final document in the browser before exporting. The same Jinja partial drives HTML preview, PDF generation, and DOCX output — zero drift.

📄

PDF & DOCX Export

Download a WeasyPrint-rendered PDF or a python-docx Word document at any time during the event lifecycle. Both use the same template source.

📬

Distribution List

Maintain a list of email recipients for the final document. Activate and deactivate recipients without deleting them from the record.

📧

Email & Lock

Send the PDF-attached email to all active distribution list recipients in one action. The event locks permanently and becomes an immutable historical record.

🔒

Immutable Document History

The HTML snapshot rendered at send time is stored permanently. Every past procedure is accessible forever — including the exact document that was sent.

📜

Full Audit Trail

Every delete, assignment change, send, and pre-check is recorded with who, what, and when. An append-only log gives each window a reliable change history.

🛡️

Pre-Maintenance Safety Check

Run a one-click safety gate before a window begins — it warns on open Tradedesk positions and pushes a Herald alert so nothing risky is shut down mid-flight.

⚡

Concurrent-Send Protection

A database advisory lock guards the send action so two admins can never dispatch the same document at once — duplicate sends are rejected and safely retried.

// WALKTHROUGH · DOCUMENT LIFECYCLE

How MaintWindow Works

Each biannual maintenance window moves through a fixed five-stage lifecycle — from automatic event creation, to developer assignment, to a locked, immutably archived document. Here is the full flow.

Event Created

Kronos auto-creates the event 30 days before March 1 or June 1. Can also be triggered manually from the dashboard. Status: pending.

Developers Assigned

A procedure lead opens the event detail page and assigns developers to each task item using the assignment modal. Status: assigned.

Document Previewed

Clicking Preview renders the document in the browser. This sets the event status to previewed and lets the team review before sending.

PDF / DOCX Exported (optional)

Download a PDF or DOCX at any stage before sending. The same _preview_partial.html template drives all three output formats.

Email Sent — Event Locked

Email & Lock sends the PDF to all active distribution recipients and permanently locks the event. The HTML snapshot is stored. Status: sent → archived. No further edits possible.

// READY TO START?

STRUCTURED. AUTOMATED. IMMUTABLE.

Manage every maintenance window from creation through delivery — with a permanent institutional record after each send.

Premier app — requires MelTuc account

MAINTENANCE WINDOWS,DONE RIGHT.