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SpotHub: option to hide vertical spot lines on panadapter #2348

Description

@M7HNF-Ian

Feature request

During contest operation the panadapter can display dozens or hundreds of DX spots simultaneously. Each spot renders a vertical dotted line from the base of the spectrum up to its label. With a full contest band this creates a dense forest of vertical lines that obscures the FFT trace and makes it difficult to read signal activity.

User feedback:

"During a contest activity when there are dozens and dozens of spotdx appearing on the Panadapter it is annoying to see the vertical lines under the spotdx. Give an option to remove them."

Suggested behaviour

Add a Spot Lines toggle to SpotHub → Display settings. When disabled, the vertical dotted lines are hidden but spot callsigns and frequencies remain fully visible on the panadapter. The setting should persist across restarts and default to Enabled so existing behaviour is unchanged.

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    GUIUser interfaceenhancementImprovement to existing featuregood first issueGood for newcomersmaintainer-reviewRequires maintainer review before any action is takenspectrumPanadapter and waterfall

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