Encapsulate wled_server.cpp's own runtime state as static, not global

[netmindz]

Summary

Part of an ongoing pass identifying WLED_GLOBAL declarations that are actually only referenced in one file (see #5777, #5778, #5779 for earlier ones). 4 more turned out to be private to wled_server.cpp: editHandler, messageHead, messageSub, optionType. (messageHead was declared on the same source line as messageSub but turned out to be just as single-file — verified separately before removing both.)

Converted all 4 to file-local static, same types and initial values as before.

No behavior change — purely a storage-class change.

Test plan

• esp32dev: builds and links cleanly via pio run -e esp32dev — 1,320,323 bytes flash, no warnings.
• Confirmed via repo-wide grep (wled00/, usermods/) that none of the 4 converted variables are referenced outside wled_server.cpp.

🤖 Generated with Claude Code

Summary by CodeRabbit

• Refactor
  • Encapsulated internal web-server state to limit its visibility within the application.
  • No user-facing behavior or runtime functionality changed.

[coderabbitai]

Walkthrough

The change removes four runtime-state declarations from wled.h and adds file-local static declarations in wled_server.cpp. Runtime logic remains unchanged.

Changes

Server state encapsulation

Layer / File(s)	Summary
Move runtime state to server scope wled00/wled.h, wled00/wled_server.cpp	The header no longer declares messageHead, messageSub, optionType, or editHandler. The server implementation declares these variables as file-local static state.

Estimated code review effort: 1 (Trivial) | ~5 minutes

Possibly related PRs

• wled/WLED#5777: Encapsulates implementation-specific global state in its implementation file.
• wled/WLED#5778: Removes internal runtime globals from the public header.
• wled/WLED#5779: Moves file-private runtime state to static implementation declarations.

Suggested labels: minor

Suggested reviewers: softhack007

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly summarizes the main change: making wled_server.cpp runtime state file-local static instead of global.

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}