Add new board definition for Waveshare ESP32-S3-Nano with a default component for PSRAM and featured components

[DeepCoreSystem]

What does this implement/fix?

Add new board definition for Waveshare ESP32-S3-Nano with a default component for PSRAM and featured components

Related issue or feature (if applicable):

none

Types of changes

• Bugfix (non-breaking change which fixes an issue) — bugfix
• New feature (non-breaking change which adds functionality) — new-feature
• Enhancement to an existing feature — enhancement
• Breaking change (fix or feature that would cause existing functionality to not work as expected) — breaking-change
• Refactor (no behaviour change) — refactor
• Documentation only — docs
• Maintenance / chore — maintenance
• CI / workflow change — ci
• Dependencies bump — dependencies

Frontend coordination

• No frontend change needed
• Companion frontend PR: esphome/device-builder-frontend#

Checklist

• The code change is tested and works locally.
• Pre-commit hooks pass (ruff, codespell, yaml/json/python checks).
• Tests have been added or updated under tests/ where applicable.
• components.index.json / definitions/components/*.json have not been hand-edited (regenerate via script/sync_components.py if a sync is needed).
• Architecture-level changes are reflected in docs/ARCHITECTURE.md and/or docs/API.md.

[codspeed-hq]

Merging this PR will not alter performance

✅ 27 untouched benchmarks

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_{Comparing DeepCoreSystem:waveshare_esp32_s3_nano (0ee403e) with main (1b6d29c)}

[bdraco]

@esphbot review

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 99.58%. Comparing base (b6820a3) to head (0ee403e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1943   +/-   ##
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  Coverage   99.58%   99.58%           
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  Files         239      239           
  Lines       19397    19397           
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  Hits        19316    19316           
  Misses         81       81           

Flag	Coverage Δ
py3.12	99.55% <ø> (ø)
py3.14	99.58% <ø> (ø)

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[esphbot]

Previous review — superseded by a newer review below.

[esphbot]

No blocking issues found.

[bdraco]

@esphbot review

[esphbot]

PR Review — Add new board definition for Waveshare ESP32-S3-Nano with a default component for PSRAM and featured components

Clean, data-only board definition for the Waveshare ESP32-S3-Nano. Merge-ready.

Verified against the codebase, not just the diff:

• validate_definitions.py passes (563 boards, 0 errors) — the manifest conforms to schema.

• All six referenced component ids exist in components.index.json (light.status_led, sensor.internal_temperature, button.restart, button.factory_reset, output.ledc, light.rgb).

• board_bodies JSON is genuine sync output, not hand-edited: derived requires: [red_channel, green_channel, blue_channel] on rgb_status, value-wrapped field presets, synthesized label defaults for unlabelled pins.

• PSRAM (8 MB octal / 80MHz) is expressed via the psram default component, not conflated into ram_size (524288 = 512 KB internal SRAM, correct for ESP32-S3). arduino_nano_esp32 is the standard PlatformIO mapping for this form factor.

• Pin/featured-component modelling is internally consistent: RGB channels GPIO46/GPIO0 (broken out, available:true) and GPIO45 (no header, available:false); featured presets drive all three regardless.

• No blocking issues found.

• Could not regenerate locally to diff (venv esphome 2026.5.1 vs catalog stamp 2026.7.0), but the validator is the manifest gate and passes.

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Checklist

• Board manifest validates (validate_definitions.py)
• Referenced featured/default component ids exist in catalog
• Generated JSON not hand-edited (matches sync-script shape)
• Pin availability internally consistent with featured presets
• Hardware metadata correct (ram/flash/psram)

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Automated review by Kōan (Claude) HEAD=0ee403e 1 min 15s

[esphbot]

No blocking issues found.