Add pause/resume button for speed tests

[Copilot]

Adds a global pause/resume toggle next to the theme button to halt all active speed test requests.

Changes

UI Component (index.jsx)

• PauseToggle component with play/pause SVG icons
• Subscribes to pause state changes via onPauseChange() with cleanup on unmount

Speed Test Engine (lib/speed-test.js)

• pause(), resume(), isPaused() exports for state control
• onPauseChange(callback) for reactive updates (returns unsubscribe function)
• Workers exit when paused, restart on resume (no busy-wait)

Styling (index.html)

• .pause-toggle positioned 60px from right, matching theme button style

Screenshot

Active state:

Paused state:

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• jioindiawest47365.z1.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestaic18632.z45.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestamw18632.z48.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestapac18632.z24.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestaqc18632.z1.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestat53726.z49.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestcac18632.z9.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestcae18632.z27.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestchile53201.z47.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestden18632.z1.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestein18632.z38.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestene18632.z1.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestesc218632.z1.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestesn18632.z1.web.core.windows.net
• speedtestfrc18632.z28.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestjpw18632.z31.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestkoreasout18632.z32.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestmeic18632.z39.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestmmc18632.z41.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestne18632.z16.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestnea18632.z15.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestnsus18632.z14.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestnzn18632.z44.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestoze18632.z8.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestozse07105.z26.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestozse07315.z26.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestplc18632.z36.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestsan18632.z1.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestscus18632.z21.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestsea18632.z23.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestspain53288.z43.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestuaen18632.z1.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestuks18632.z33.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestwe07148.z6.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestwestcentr18632.z4.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestwestindia18632.z10.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestwestus218632.z5.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• speedtestwus318632.z1.web.core.windows.net
• stci08318.z29.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• stcus09377.z19.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• stea09073.z7.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• stei08516.z30.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• steus09377.z13.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• steus208516.z20.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• stjpe09377.z11.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• stkc09377.z12.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• stukw08516.z35.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• stwe08516.z6.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)
• stwus09377.z22.web.core.windows.net
  • Triggering command: node test/cb-endpoints-test.mjs (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Add a 'pause' button</issue_title>
<issue_description></issue_description>

Comments on the Issue (you are @copilot in this section)

@richorama add this next to theme button, using a similar SVG approach with play and pause icons. It should pause all requests being made, as a global toggle.

• Fixes Add a 'pause' button #32

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