Add Brainmax Canvas Extension by juliamuiruri4 · Pull Request #2361 · github/awesome-copilot

juliamuiruri4 · 2026-07-20T14:53:59Z

Pull Request Checklist

I have read and followed the CONTRIBUTING.md guidelines.
I have read and followed the Guidance for submissions involving paid services.
My contribution adds a new instruction, prompt, agent, skill, workflow, or canvas extension file in the correct directory.
The file follows the required naming convention.
The content is clearly structured and follows the example format.
I have tested my instructions, prompt, agent, skill, workflow, or canvas extension with GitHub Copilot.
I have run npm start and verified that README.md is up to date.
I am targeting the main branch for this pull request.

Description

BrainMax Canvas is the interactive dashboard for codebase-grounded concept-mastery quizzes. It presents detected knowledge domains, accepts freeform answers, shows rubric scores, and compiles completed domains into a competency report.

The Canvas is an optional visual layer. Question generation and scoring stay with the BrainMaxxing Agent Skills, and the skills continue to work in clients without Canvas support.

Type of Contribution

Additional Notes

By submitting this pull request, I confirm that my contribution abides by the Code of Conduct and will be licensed under the MIT License.

Copilot

Pull request overview

Adds BrainMax Canvas, an interactive quiz and competency-report extension for the GitHub Copilot marketplace.

Changes:

Adds the Canvas server, state machine, and SDK actions.
Adds an accessible, responsive browser interface.
Registers the extension in the marketplace.

Show a summary per file

File	Description
`extensions/brainmax-canvas/README.md`	Documents installation and usage.
`extensions/brainmax-canvas/public/styles.css`	Defines themes and responsive styling.
`extensions/brainmax-canvas/public/index.html`	Provides the Canvas UI structure.
`extensions/brainmax-canvas/public/app.js`	Renders state and handles interactions.
`extensions/brainmax-canvas/package.json`	Defines package metadata and scripts.
`extensions/brainmax-canvas/lib/state.mjs`	Manages quiz instance state.
`extensions/brainmax-canvas/lib/http-server.test.mjs`	Tests request-body handling.
`extensions/brainmax-canvas/lib/http-server.mjs`	Serves UI, SSE, and event endpoints.
`extensions/brainmax-canvas/extension.mjs`	Implements Canvas actions and lifecycle.
`extensions/brainmax-canvas/.github/plugin/plugin.json`	Defines extension marketplace metadata.
`.github/plugin/marketplace.json`	Registers BrainMax Canvas.

Review details

Files reviewed: 11/12 changed files
Comments generated: 4
Review effort level: Medium

Copilot

Review details

Files reviewed: 11/12 changed files
Comments generated: 5
Review effort level: Medium

Copilot

Review details

Files reviewed: 11/12 changed files
Comments generated: 4
Review effort level: Medium

Copilot

Review details

Files reviewed: 11/12 changed files
Comments generated: 3
Review effort level: Medium

Copilot

Review details

Files reviewed: 11/12 changed files
Comments generated: 3
Review effort level: Medium

Copilot

Review details

Files reviewed: 11/12 changed files
Comments generated: 0 new
Review effort level: Medium

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 4b95f746-9a23-4513-80eb-9d641986aab2

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 22323915-a9c0-42b7-bf74-36ce4069a32e

Copilot

Review details

Comments suppressed due to low confidence (3)

extensions/brainmax-canvas/extension.mjs:112

A successful session.send does not guarantee that the agent will invoke record_score. If that follow-up action is omitted, answerStatus never leaves submitting, so the textarea remains disabled and the answer cannot be retried. Detect completion/timeout of the agent turn and restore an actionable error state when no score arrives.

            state.answerStatus = "submitting";

extensions/brainmax-canvas/extension.mjs:160

This request has the same permanent-pending path: if the agent responds without show_report, the button remains disabled forever because only show_report or a rejected session.send resets the status. Add a session-idle/timeout check that sets reportRequestStatus to error when no report action arrives.

            state.reportRequestStatus = "submitting";

extensions/brainmax-canvas/public/app.js:456

Web storage access can throw a SecurityError when storage is disabled or restricted. Because this read runs before the EventSource is created, that exception prevents the entire Canvas from connecting; guard both the read and write so theme persistence remains optional.

const storedTheme = localStorage.getItem(THEME_STORAGE_KEY);

Files reviewed: 11/12 changed files
Comments generated: 2
Review effort level: Medium

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 22323915-a9c0-42b7-bf74-36ce4069a32e

Copilot

Review details

Files reviewed: 11/12 changed files
Comments generated: 4
Review effort level: Medium

+                    handler: async (ctx) => {
+                        const state = getState(ctx.instanceId);
+                        const { index, score, feedback } = ctx.input || {};
+                        if (!state.quiz || !state.question || index !== state.question.index || state.answerStatus === "scored") {


Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 22323915-a9c0-42b7-bf74-36ce4069a32e

Copilot

Review details

Files reviewed: 11/12 changed files
Comments generated: 0 new
Review effort level: Medium

Copilot AI review requested due to automatic review settings July 20, 2026 14:54

juliamuiruri4 requested a review from aaronpowell as a code owner July 20, 2026 14:54

github-actions Bot added canvas-extension PR touches canvas extensions new-submission PR adds at least one new contribution labels Jul 20, 2026

Copilot started reviewing on behalf of juliamuiruri4 July 20, 2026 14:54 View session

Copilot AI reviewed Jul 20, 2026

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Comment thread extensions/brainmax-canvas/lib/http-server.mjs

Comment thread extensions/brainmax-canvas/lib/http-server.mjs Outdated

Comment thread extensions/brainmax-canvas/public/styles.css Outdated

Comment thread extensions/brainmax-canvas/public/styles.css Outdated

Copilot AI review requested due to automatic review settings July 20, 2026 15:12

Copilot started reviewing on behalf of juliamuiruri4 July 20, 2026 15:13 View session

Copilot AI reviewed Jul 20, 2026

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Copilot AI review requested due to automatic review settings July 20, 2026 15:25

Copilot started reviewing on behalf of juliamuiruri4 July 20, 2026 15:26 View session

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Comment thread extensions/brainmax-canvas/extension.mjs Outdated

Comment thread extensions/brainmax-canvas/public/app.js Outdated

Comment thread extensions/brainmax-canvas/public/app.js Outdated

Comment thread extensions/brainmax-canvas/public/app.js Outdated

Copilot AI review requested due to automatic review settings July 20, 2026 15:57

Copilot started reviewing on behalf of juliamuiruri4 July 20, 2026 15:58 View session

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Comment thread extensions/brainmax-canvas/public/app.js

Comment thread extensions/brainmax-canvas/public/app.js Outdated

Comment thread extensions/brainmax-canvas/extension.mjs Outdated

Copilot AI review requested due to automatic review settings July 20, 2026 16:11

Copilot started reviewing on behalf of juliamuiruri4 July 20, 2026 16:11 View session

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Comment thread extensions/brainmax-canvas/public/app.js

Comment thread extensions/brainmax-canvas/public/app.js Outdated

Comment thread extensions/brainmax-canvas/extension.mjs

Copilot AI review requested due to automatic review settings July 20, 2026 16:22

Copilot started reviewing on behalf of juliamuiruri4 July 20, 2026 16:22 View session

Copilot AI reviewed Jul 20, 2026

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juliamuiruri4 added 9 commits July 20, 2026 19:59

add brainmax canvas extension

9a6c40a

fix: address BrainMax canvas review

910aa27

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 4b95f746-9a23-4513-80eb-9d641986aab2

fix: align BrainMax review contracts

02aa829

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 4b95f746-9a23-4513-80eb-9d641986aab2

fix: align BrainMax completion contract

f45ebe5

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 4b95f746-9a23-4513-80eb-9d641986aab2

fix: secure BrainMax canvas endpoints

3bb1f25

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 22323915-a9c0-42b7-bf74-36ce4069a32e

fix: support BrainMax chat answers

cccccc8

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 22323915-a9c0-42b7-bf74-36ce4069a32e

fix: harden BrainMax canvas accessibility

1810008

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 22323915-a9c0-42b7-bf74-36ce4069a32e

fix: clarify BrainMax domain status

938fe51

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 22323915-a9c0-42b7-bf74-36ce4069a32e

fix: improve BrainMax canvas feedback

c978201

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 22323915-a9c0-42b7-bf74-36ce4069a32e

Copilot AI review requested due to automatic review settings July 20, 2026 16:59

juliamuiruri4 force-pushed the main branch from eca1f00 to c978201 Compare July 20, 2026 16:59

Copilot started reviewing on behalf of juliamuiruri4 July 20, 2026 16:59 View session

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Comment thread extensions/brainmax-canvas/extension.mjs

Comment thread extensions/brainmax-canvas/public/app.js Outdated

fix: recover stalled BrainMax requests

cd5bea5

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 22323915-a9c0-42b7-bf74-36ce4069a32e

Copilot AI review requested due to automatic review settings July 20, 2026 17:32

Copilot started reviewing on behalf of juliamuiruri4 July 20, 2026 17:33 View session

Copilot AI reviewed Jul 20, 2026

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fix: preserve BrainMax report state

8d2598f

Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com> Copilot-Session: 22323915-a9c0-42b7-bf74-36ce4069a32e

Copilot AI review requested due to automatic review settings July 20, 2026 17:39

Copilot started reviewing on behalf of juliamuiruri4 July 20, 2026 17:39 View session

Copilot AI reviewed Jul 20, 2026

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github-actions Bot mentioned this pull request Jul 20, 2026

[aw] Learning Hub Updater is missing required tool #2367

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juliamuiruri4 commented Jul 20, 2026 •

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