Fix world hopper TCP ping fallback

[infuse21]

World Hopper currently treats TCP port 43594 as the only endpoint and does not bound the socket connect operation. When that endpoint is unavailable, reachable worlds are reported as failed pings.

This change adds a bounded connect timeout and tries port 443 when 43594 fails. Rs2WorldUtil now uses the same shared ping logic so world selection and World Hopper report reachability consistently. A regression test covers falling back when the first endpoint refuses the connection.

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Reviewing files that changed from the base of the PR and between a11b2c0 and 1290503.

📒 Files selected for processing (2)

• runelite-client/src/main/java/net/runelite/client/plugins/worldhopper/ping/Ping.java
• runelite-client/src/test/java/net/runelite/client/plugins/worldhopper/ping/PingTest.java

🚧 Files skipped from review as they are similar to previous changes (2)

• runelite-client/src/main/java/net/runelite/client/plugins/worldhopper/ping/Ping.java
• runelite-client/src/test/java/net/runelite/client/plugins/worldhopper/ping/PingTest.java

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Walkthrough

World ping measurement now uses Ping.tcpPing with TCP fallback ports 43594 and 443. The shared method retries ports and reports the first successful latency. Tests cover empty-port validation and retry behavior. New entity-guide documentation describes endpoint probing, affected world-selection logic, and local-socket fallback testing.

Merge Risk: ⚪ Minimal · up to 12905

World reachability checks now retry TCP probing through port 443 when the primary port is unavailable, with bounded connection behavior and fallback coverage. No merge-blocking risk is currently identified.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 42.86% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 7 functions across 3 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: fixing TCP ping fallback in World Hopper.
Description check	✅ Passed	The description accurately explains the bounded timeout, port 443 fallback, shared ping logic, and regression test covered by the changeset.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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Inline comments:
In
`@runelite-client/src/main/java/net/runelite/client/plugins/worldhopper/ping/Ping.java`:
- Line 313: Validate that ports is non-empty before entering the connection
loop, and throw the method’s declared failure type for an empty list. Keep the
existing lastException behavior unchanged for non-empty ports.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Team

Run ID: 9490ab0a-4dd0-45da-996e-9f9ad645998a

📥 Commits

Reviewing files that changed from the base of the PR and between 4294b71 and a11b2c0.

📒 Files selected for processing (5)

• docs/entity-guides/README.md
• docs/entity-guides/worlds.md
• runelite-client/src/main/java/net/runelite/client/plugins/microbot/util/world/Rs2WorldUtil.java
• runelite-client/src/main/java/net/runelite/client/plugins/worldhopper/ping/Ping.java
• runelite-client/src/test/java/net/runelite/client/plugins/worldhopper/ping/PingTest.java

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