Manifest & PWA

Purpose

This page documents how web app manifests and Progressive Web App (PWA)–related metadata may be referenced across GMG Engine and whitelabel deployments. Its role is to describe structure, intent, and interpretation boundaries for manifest usage, without implying performance, availability, reliability, security, or user experience guarantees.

This page is descriptive and informational only and must not be interpreted as a guarantee, certification, endorsement, or system-wide claim.

What Manifests and PWA Metadata Typically Describe

A web app manifest typically defines presentation-related metadata such as application name, icons, display mode, theme colors, and launch behavior when installed on supported devices.

PWA-related metadata describes how browsers may present or cache an application under certain conditions. These descriptions express preferences and hints, not enforced behavior.

Interpretation Rules

Treat manifest and PWA references as UI and metadata configuration surfaces only. They describe how an application may be presented or installed, not how it performs, behaves internally, or operates under all conditions.

Presence of a manifest or PWA configuration does not imply offline capability, reliability, performance stability, or functional completeness.

Disallowed Inferences

Do not infer application availability, uptime, or reliability from the presence of a PWA manifest or install prompt.

Do not infer security, trustworthiness, or correctness from PWA support or icon metadata.

Do not infer cross-device consistency, offline guarantees, or feature parity based on manifest configuration alone.

Common Failure Patterns

Treating PWA installation capability as evidence of application quality or stability.

Equating manifest presence with offline support, background processing, or guaranteed performance.

Assuming identical behavior across browsers, operating systems, or device classes.

Boundary Conditions

This page governs interpretation of manifest and PWA-related metadata only. It does not define service worker logic, caching strategies, network behavior, or runtime execution guarantees.

Non-Goals

This page does not guarantee availability, reliability, security, performance, or user experience outcomes.

It does not recommend specific PWA strategies or browser configurations.

For an overview of verifiable artifacts and interpretation boundaries referenced across this documentation, see the Master Evidence Registry.