Silence the strapping pin warnings on the GPIO4 and GPIO5 buttons

[bharvey88]

Version: 26.8.27.1

What does this implement/fix?

Every build opens with four strapping pin warnings:

WARNING GPIO4 is a strapping PIN and should only be used for I/O with care.
WARNING GPIO5 is a strapping PIN and should only be used for I/O with care.
WARNING GPIO5 is a strapping PIN and should only be used for I/O with care.
WARNING GPIO4 is a strapping PIN and should only be used for I/O with care.

GPIO4 and GPIO5 are the Song Button 2 and Song Button 3 pins, and each warns twice because each is declared under deep_sleep's esp32_ext1_wakeup and again on its binary_sensor. The warning is about attaching external pullups or pulldowns to a strapping pin. Both buttons run on the C6's internal pulldowns, so it doesn't apply. GPIO9's reset button already carries ignore_strapping_warning: true for the same reason.

This adds the flag to all four declarations. esphome config on H-3.yaml and H-3D.yaml is now warning free, which makes a real warning visible when one shows up.

No version bump. ignore_strapping_warning is read by the pin validator and never passed to codegen, so the compiled firmware is byte for byte what it was.

Touches the same file as #23 but not the same lines, so the two are independent.

Types of changes

• Bugfix (fixed change that fixes an issue)
• New feature (thanks!)
• Breaking change (repair/feature that breaks existing functionality)
• Dependency Update - Does not publish
• Other - Does not publish
• Website of github readme file update - Does not publish
• Github workflows - Does not publish

Checklist / Checklijst:

• The code change has been tested and works locally
• The code change has not yet been tested

If user-visible functionality or configuration variables are added/modified:

• Added/updated documentation for the web page

Validated against esphome 2026.8.1 on both variants, zero warnings out.

🤖 Generated with Claude Code

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