more api surface, protect some nils, less disconnect events

[davidnewhall]

• Protect some nil pointers.
• Only emit event stream disconnect event if it was connected.
• Add redacted url method.

[Copilot]

Pull request overview

This PR expands the SDK API surface and improves robustness by initializing additional sub-interfaces, adding nil-safety guards on camera accessors, refining when event-stream disconnect events are emitted, and introducing helpers to obtain/redact RTSP(S) stream URLs for logging.

Changes:

• Initialize Server.Info and Server.Cameras in NewMust to reduce nil-pointer hazards prior to Refresh().
• Adjust event-stream scanning so EventStreamDisconnect is not emitted on failed connection attempts.
• Add Camera.VideoURL() and Camera.RedactedVideoURL() helpers and extend tests to validate redaction.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
securityspy.go	Initialize Info and Cameras in NewMust to prevent nil access before refresh.
events.go	Stop emitting disconnect events when the dial/connect attempt fails.
cameras.go	Add nil guards on Cameras accessors; add VideoURL/RedactedVideoURL helpers used by video capture paths.
cameras_internal_test.go	Add coverage verifying password redaction in RedactedVideoURL.
.golangci.yml	Disable the goconst linter (CI/static-analysis behavior change).

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