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feat(espnow): Pi bridge client, binary wire, and espnow-sender firmware

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Replace serial/Wi-Fi driver transport paths with WebSocket bridge client,
binary espnow_wire delivery, device announce registry, and restructured
espnow-sender (AP + broadcast passthrough). Includes docs and tests.

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Jimmy
2026-05-23 22:44:44 +12:00
parent f4ef85c182
commit 4fc3f46866
42 changed files with 4167 additions and 848 deletions
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53
docs/images/espnow/command-flow.svg Normal file
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<marker id="a" markerWidth="8" markerHeight="8" refX="6" refY="3" orient="auto">
<path d="M0,0 L6,3 L0,6 Z" fill="#333"/>
</marker>
<style>
.actor { fill: #f4f6f8; stroke: #2c3e50; stroke-width: 2; }
.lifeline { stroke: #aaa; stroke-width: 1; stroke-dasharray: 4 4; }
.msg { stroke: #8e44ad; stroke-width: 1.5; fill: none; marker-end: url(#a); }
.t { font-size: 13px; fill: #222; }
.h { font-size: 14px; font-weight: 700; }
.s { font-size: 11px; fill: #555; }
</style>
</defs>
<text x="390" y="24" text-anchor="middle" class="h" font-size="16">Preset / command delivery</text>
<rect class="actor" x="30" y="44" width="90" height="36" rx="6"/>
<text x="75" y="68" text-anchor="middle" class="h">UI</text>
<line class="lifeline" x1="75" y1="80" x2="75" y2="440"/>
<rect class="actor" x="200" y="44" width="120" height="36" rx="6"/>
<text x="260" y="68" text-anchor="middle" class="h">Pi</text>
<line class="lifeline" x1="260" y1="80" x2="260" y2="440"/>
<rect class="actor" x="400" y="44" width="100" height="36" rx="6"/>
<text x="450" y="68" text-anchor="middle" class="h">Bridge</text>
<line class="lifeline" x1="450" y1="80" x2="450" y2="440"/>
<rect class="actor" x="580" y="44" width="100" height="36" rx="6"/>
<text x="630" y="68" text-anchor="middle" class="h">Driver</text>
<line class="lifeline" x1="630" y1="80" x2="630" y2="440"/>
<path class="msg" d="M 77 110 L 258 110"/>
<text x="168" y="102" text-anchor="middle" class="t">POST /presets/send (JSON)</text>
<text x="260" y="145" text-anchor="middle" class="s">build v2 envelope</text>
<text x="260" y="162" text-anchor="middle" class="s">pack CMD (d250 B)</text>
<path class="msg" d="M 262 190 L 448 190"/>
<text x="355" y="182" text-anchor="middle" class="t">WS downlink + CMD</text>
<path class="msg" d="M 452 230 L 628 230"/>
<text x="540" y="222" text-anchor="middle" class="t">ESP-NOW unicast / broadcast</text>
<text x="630" y="275" text-anchor="middle" class="s">parse CMD</text>
<text x="630" y="292" text-anchor="middle" class="s">apply presets / select</text>
<rect x="140" y="320" width="500" height="90" fill="#f0f0f0" stroke="#999" rx="6"/>
<text x="390" y="345" text-anchor="middle" class="t">GROUP_CMD: one broadcast per group id  only members apply</text>
<text x="390" y="368" text-anchor="middle" class="s">Large libraries ’ multiple CMD chunks from Pi</text>
<text x="390" y="390" text-anchor="middle" class="s">Optional trailing 0x01 on CMD = save to flash</text>
</svg>
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