samyakshrma/focusgate

Purpose and activation model

Focus Gate is a load-unpacked Chromium extension that blocks a fixed set of distracting domains. It deliberately has no popup, options UI, background logic, or in-extension enable/disable control; Chrome/Edge/Brave’s extension toggle is the control boundary.

Core extension metadata is in manifest.json.

Request-blocking policy

Network/navigation interception is defined declaratively in rules.json, using Chromium’s declarative net-request rules. Each rule matches a target domain and redirects matching requests to the extension-owned blocked page.

The policy boundary is:

• rules.json — domain match rules, rule IDs, and redirect targets

• manifest.json — grants/registers the ruleset with the browser

Generated ruleset artifact

The browser-consumable indexed form of the rule policy is present under _metadata/generated_indexed_rulesets/, including _metadata/generated_indexed_rulesets/_ruleset1. This is generated extension metadata rather than an application runtime stage; the source of blocklist changes remains rules.json.

Redirect and blocked-page flow

When a URL matches a blocking rule, the browser redirects it to blocked.html, passing a site label through the redirect extension path. The blocked page is therefore the only user-facing extension surface and acts as the terminal destination for blocked navigation.

Relevant paths:

• rules.json

• blocked.html

Packaging and browser runtime

The extension runs entirely inside the Chromium extension platform and relies on the browser’s declarative request engine rather than a server or external API. It is installed from the repository folder via “Load unpacked,” so the directory must remain available on disk.

Key package assets:

• manifest.json

• icons/

• blocked.html

Change and deployment boundary

Changing blocked domains is a source-policy edit: update rules.json, then reload the unpacked extension from the browser extensions page. There is no build service, backend, database, authentication layer, or external runtime indicated by this repository.