Add boot status LED feature and firmware version sensors

[bharvey88]

Summary

• Add boot status LED that shows connection status on boot (blue=HA, green=WiFi, yellow=not connected)
• Add "Boot Status LED" toggle switch to enable/disable the feature
• Add "ESPHome Version" and "Apollo Firmware Version" text sensors
• Update button timing: 2-8s hold runs both statusCheck and testScript

New Features

• Boot Status LED: Shows connection status for 5 seconds after boot
  • 🔵 Blue = Connected to Home Assistant
  • 🟢 Green = WiFi only
  • 🟡 Yellow = Not connected
• Toggle Switch: "Boot Status LED" in Config to enable/disable (on by default)
• Manual Diagnostic: Hold reset button 2-8 seconds to run connection check + hardware test
• Firmware Version Sensors: ESPHome and Apollo versions now visible in HA

Button Timing

Duration	Action
< 2s	Nothing
2-8s	statusCheck → 3s wait → testScript
8s+	WiFi reset

Testing

Same as MTR-1 testing guide - see MTR-1 PR #75 for details.

🤖 Generated with Claude Code

Summary by CodeRabbit

Release Notes

• New Features
  • Added controllable boot diagnostics toggle switch for managing startup status reporting.
  • Diagnostic information now displays firmware and ESPHome versions in the UI.
  • Boot status checks trigger on first device connection with visual LED indicators.
  • Enhanced button long-press diagnostics with comprehensive multi-condition evaluation.

[coderabbitai]

Walkthrough

These ESPHome configuration files introduce a boot initialization state tracking system that monitors first-boot status across device startup and client connection events. The changes add global state variables, conditional API hooks for delayed status checks, new UI controls for boot status monitoring, expanded diagnostic telemetry (ESPHome and firmware versions), and reorganized scripts that sequence status checks and device testing. Similar patterns are applied across multiple configuration variants for WiFi connection handling.

Changes

Cohort / File(s)	Summary
Core Configuration Enhancement Integrations/ESPHome/Core.yaml	Added first_boot_done and boot_status_enabled global booleans to track initialization state. Added on_client_connected API hook with delayed statusCheck execution gated by boot flags. Reworked button long-press to trigger diagnosticCheck (which chains statusCheck and testScript) instead of direct testScript. Introduced Boot Status LED template switch for UI control of boot reporting. Added ESPHome Version and Apollo Firmware Version sensors for diagnostics. Expanded scripting with new statusCheck and diagnosticCheck scripts orchestrating multi-phase boot and test sequences.
WiFi Connection Boot Handlers Integrations/ESPHome/MSR-2.yaml, Integrations/ESPHome/MSR-2_BLE.yaml, Integrations/ESPHome/MSR-2_Factory.yaml	Added on_connect automation with 10-second delay that conditionally sets first_boot_done and executes statusCheck when first boot is not done and boot status is enabled. MSR-2.yaml removes power_save_mode configuration. MSR-2_BLE.yaml adds ota_esphome identifier to OTA platform.

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~40 minutes

Poem

🐰 First boot tracked through globals so neat,
When clients connect, boot status is sweet,
Diagnostics sequence with script-choreographed grace,
Apollo awakens, joining network's embrace,
LED wisdom guides from the very first place! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main changes: addition of a Boot Status LED feature and firmware version sensors, which are the primary new public entities and UI elements introduced.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feature/boot-status-led

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