Release 26.3.2.1 - New sensors, ESPHome modernisation, and bug fixes

[bharvey88]

Version: 26.3.2.1

What does this implement/fix?

Merges beta into main for the 26.3.2.1 release. Changes include:

• ESPHome modernisation — web server v3, remove redundant board string (variant + flash_size already present), remove legacy BLE on_connect/on_disconnect wifi hooks, set min_version: 2025.6.0 to enforce web server v3 compatibility (breaking: board spec change)
• API services → actions rename — play_buzzer and other services renamed to actions (breaking: existing HA automations calling these services will need updating)
• Remove custom deep_sleep external component — incompatible with current ESPHome automation API
• IP address text sensor — via wifi_info platform
• ESPHome version + Apollo firmware version text sensors
• Bug fixes — Apollo firmware version showing "unknown", firmware version now published once on boot instead of polling

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

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 734cceac-785b-420d-bb67-a5d237bea802

📥 Commits

Reviewing files that changed from the base of the PR and between 1c60389 and b74b943.

📒 Files selected for processing (2)

• Integrations/ESPHome/BTN-1.yaml
• Integrations/ESPHome/Core.yaml

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch beta

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[TrevorSchirmer]

@bharvey88 Conflicts in main