Add HTTP/SSE action examples and browser demos

[minggangw]

• Add Fibonacci action servers to both web demos with goal validation, periodic feedback, cancellation and shutdown guards.
• Add browser controls for goal submission, feedback, terminal status, results, WebSocket cancellation and HTTP stream detachment.
• Isolate action clients and ignore stale callbacks when switching transports or starting another goal.
• Clean up connections on page exit and restore cached-page connections and active EventSource streams without replaying goals.
• Expose action capabilities in demo configurations, enable TypeScript demo CORS and support custom runtime ports.
• Improve responsive layouts, input sizing and action controls.
• Update root, npm, SDK and demo guides with typed action examples, transport semantics, curl recipes and OpenAPI export.

[Copilot]

Copilot review overview

🟡 Changes recommended

The documented walkthrough references a missing http-action-client-example.mjs file, so the advertised client step cannot run.

Get a fresh assessment by requesting another Copilot review.

Review effort: Lite
Findings: 1

Open (1)

• Referenced HTTP action client example file is missing · New

What changed in this PR

Adds HTTP/SSE action documentation and Fibonacci browser demos for JavaScript and TypeScript.

Changes:

• Documents action APIs, SSE, cancellation, and OpenAPI support.
• Adds Fibonacci action servers and browser controls.
• Updates demo configuration, styling, and README guidance.

File	Summary
web/​README.md	Documents browser actions and HTTP/SSE usage
scripts/​npmjs-readme.md	Updates package README action guidance
README.md	Updates the web SDK overview
example/​actions/​README.md	Adds an HTTP/SSE action walkthrough
demo/​web/​typescript/​web.json	Exposes the Fibonacci action and CORS
demo/​web/​typescript/​src/​style.css	Adds responsive action styling
demo/​web/​typescript/​src/​main.ts	Implements typed action controls
demo/​web/​typescript/​server.ts	Adds the TypeScript Fibonacci action server
demo/​web/​typescript/​README.md	Documents the TypeScript action demo
demo/​web/​typescript/​index.html	Adds the Fibonacci action panel
demo/​web/​javascript/​web.json	Exposes the Fibonacci action
demo/​web/​javascript/​runtime.mjs	Adds the JavaScript Fibonacci action server
demo/​web/​javascript/​README.md	Documents the JavaScript action demo
demo/​web/​javascript/​index.html	Adds the JavaScript action panel and controls

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[coveralls]

coverage: 91.136%. remained the same — minggangw:add-sse-action-example into RobotWebTools:develop

[Copilot]

Copilot review overview

🟡 Changes recommended

The walkthrough references a missing client file, and both browser demos remain disconnected after a back-forward-cache restore.

Get a fresh assessment by requesting another Copilot review.

Review effort: Balanced
Findings: 3

Open (3)

• Reconnect SDK and EventSource after bfcache restoration · New
• Reconnect after back-forward cache restoration · New
• Referenced HTTP action client example file is missing

[Copilot]

Copilot review overview

🟡 Changes recommended

The TypeScript demo passes null to a parameter that only accepts a callback or undefined, causing strict type-checking to fail.

Get a fresh assessment by requesting another Copilot review.

Review effort: Balanced
Findings: 1 · 3

Open (4)

• Pass undefined instead of null for accepted-goal handler · New
• Reconnect after back-forward cache restoration
• Reconnect SDK and EventSource after bfcache restoration
• Referenced HTTP action client example file is missing

[Copilot]

Copilot review overview

🔵 Needs a closer look

Cross-transport action cancellation, streaming, and browser lifecycle behavior warrant final human validation.

Review effort: Balanced
Findings: 1

Open (1)

• Referenced HTTP action client example file is missing

Resolved since last review (3)

• Pass undefined instead of null for accepted-goal handler
• Reconnect after back-forward cache restoration
• Reconnect SDK and EventSource after bfcache restoration