fix(pl18u): Encoder emulation acceleration not implemented properly

[richardclli]

PL18U uses encoder emulation by key presses, acceleration is not implemented properly.

opencode + deepseek pro find the bug by just code reading ^.^

Summary by CodeRabbit

• Bug Fixes
  • Improved rotary encoder timing and responsiveness during key processing.

[coderabbitai]

📝 Walkthrough

Walkthrough

pl18u_key_driver.cpp integrates timer-based delta time tracking for rotary encoder state detection. The rotary encoder value is marked volatile to ensure safe concurrent access, the timers driver header is included, and delta time is initialized from get_tmr10ms() when the rotation state reaches a stable count (outside BOOT builds).

Changes

Rotary encoder timing and state safety

Layer / File(s)	Summary
Rotary encoder timer integration and volatile state radio/src/targets/pl18/pl18u_key_driver.cpp	Includes timers_driver.h, marks rotencValue volatile for safe concurrent access, and initializes rotencDt from get_tmr10ms() when rotation state stabilizes at stateCount == 3 (conditional on non-BOOT build).

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

🚥 Pre-merge checks | ✅ 3 | ❌ 2

❌ Failed checks (2 warnings)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.
Description check	⚠️ Warning	The PR description is minimal and lacks required structure. It's missing issue reference, detailed summary of changes, and doesn't follow the template.	Add issue reference (Fixes #), provide detailed summary of changes, explain why the fix is needed, and how it addresses the bug mentioned.

✅ Passed checks (3 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: fixing encoder emulation acceleration in the PL18U device driver.
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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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch richardclli/fix-pl18u-encoder-emulation

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[richardclli]

@pfeerick This one is done, can merge