feat: add LilyGo T-Beam and T-Beam Supreme board support

src/components/BoardSelector.svelte

@@ -9,6 +9,7 @@
 
   let { selected, onselect }: Props = $props();
 
+  const esp32Boards = boards.filter((b) => b.family === "esp32");
   const espBoards = boards.filter((b) => b.family === "esp32s3");
   const rpBoards = boards.filter((b) => b.family === "rp2040");
   const nrfBoards = boards.filter((b) => b.family === "nrf52840");
@@ -39,6 +40,23 @@
 <div>
   <h3 class="font-mono text-sm text-text-muted mb-3 uppercase tracking-wider">Select Board</h3>
 
+  <p class="text-xs text-text-dim mb-2 font-mono">ESP32</p>
+  <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-3 mb-4">
+    {#each esp32Boards as board}
+      <button
+        class="text-left bg-bg-card border p-4 rounded transition-all cursor-pointer
+          {selected?.id === board.id
+          ? 'border-accent shadow-[0_0_12px_oklch(from_var(--color-accent)_l_c_h_/_0.15)]'
+          : 'border-border hover:border-border-bright'}"
+        onclick={() => onselect(board)}
+      >
+        <div class="font-mono font-medium text-text text-sm">{board.name}</div>
+        <div class="text-xs text-text-muted mt-1">{board.mcu} &middot; {board.radio}</div>
+        <div class="text-xs {badgeColor(board)} mt-2 font-mono">{badgeText(board)}</div>
+      </button>
+    {/each}
+  </div>
+
   <p class="text-xs text-text-dim mb-2 font-mono">ESP32-S3</p>
   <div class="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-3 mb-4">
     {#each espBoards as board}

src/components/EspFlashFlow.svelte

@@ -38,7 +38,7 @@
 
     let session;
     try {
-      session = await connect(callbacks);
+      session = await connect(callbacks, board.family === "esp32" ? "esp32" : "esp32s3");
     } catch (err) {
       const msg = err instanceof DOMException && err.name === "NotFoundError"
         ? "Port selection cancelled."

src/components/Flasher.svelte

@@ -59,7 +59,7 @@
   {#if selectedBoard && selectedRelease}
     <div class="border-t border-border pt-8">
       <h3 class="font-mono text-sm text-text-muted mb-3 uppercase tracking-wider">
-        {#if selectedBoard.family === "esp32s3"}
+        {#if (selectedBoard.family === "esp32" || selectedBoard.family === "esp32s3")}
           Flash Firmware
         {:else}
           Download Firmware
@@ -72,7 +72,7 @@
         </div>
       {/if}
 
-      {#if selectedBoard.family === "esp32s3"}
+      {#if (selectedBoard.family === "esp32" || selectedBoard.family === "esp32s3")}
         <EspFlashFlow board={selectedBoard} release={selectedRelease} />
       {:else}
         <Uf2DownloadFlow board={selectedBoard} release={selectedRelease} />

src/lib/boards.ts

@@ -1,6 +1,17 @@
 import type { BoardDef } from "./types";
 
 export const boards: BoardDef[] = [
+  {
+    id: "lilygo_tbeam",
+    name: "LilyGo T-Beam (classic)",
+    mcu: "ESP32",
+    radio: "SX1276",
+    family: "esp32",
+    flashMethod: "web-serial",
+    assetPattern: "donglora-lilygo_tbeam-v{version}.bin",
+    notes:
+      "Original T-Beam with ESP32 + SX1276 + SSD1306 OLED + AXP192 PMIC. Flashes over the on-board CP2102 USB-to-UART bridge. Clients connect via serial (BLE planned).",
+  },
   {
     id: "elecrow_thinknode_m2",
     name: "ELECROW ThinkNode-M2",
@@ -43,6 +54,17 @@ export const boards: BoardDef[] = [
     flashMethod: "web-serial",
     assetPattern: "donglora-heltec_v4-v{version}.bin",
   },
+  {
+    id: "lilygo_tbeam_supreme",
+    name: "LilyGo T-Beam S3 Supreme",
+    mcu: "ESP32-S3",
+    radio: "SX1262",
+    family: "esp32s3",
+    flashMethod: "web-serial",
+    assetPattern: "donglora-lilygo_tbeam_supreme-v{version}.bin",
+    notes:
+      "T-Beam Supreme with ESP32-S3 + SX1262 + SH1106 OLED + AXP2101 PMIC. Flashes over native USB CDC-ACM — no UART bridge.",
+  },
   {
     id: "rak_wisblock_4631",
     name: "RAK WisBlock 4631",

src/lib/esptool.ts

@@ -1,5 +1,7 @@
 import type { FlashProgress } from "./types";
 
+export type EspChipFamily = "esp32" | "esp32s3";
+
 export function isWebSerialSupported(): boolean {
   return typeof navigator !== "undefined" && "serial" in navigator;
 }
@@ -19,7 +21,20 @@ async function loadEsptool() {
   return { ESPLoader: mod.ESPLoader, Transport: mod.Transport };
 }
 
-export async function connect(callbacks: FlashCallbacks): Promise<FlashSession> {
+function chipFamilyLabel(family: EspChipFamily): string {
+  return family === "esp32s3" ? "ESP32-S3" : "ESP32";
+}
+
+function isChipCompatible(detected: string, expected: EspChipFamily): boolean {
+  if (expected === "esp32s3") return detected.includes("ESP32-S3");
+  // Classic ESP32: esptool-js reports "ESP32". Exclude S2/S3/C3/C6/H2/P4 variants.
+  return /^ESP32(?![-\s]?(S|C|H|P)\d)/i.test(detected);
+}
+
+export async function connect(
+  callbacks: FlashCallbacks,
+  expectedChip: EspChipFamily,
+): Promise<FlashSession> {
   if (!isWebSerialSupported()) {
     throw new Error("Web Serial API is not supported in this browser. Use Chrome, Edge, or Opera.");
   }
@@ -45,16 +60,17 @@ export async function connect(callbacks: FlashCallbacks): Promise<FlashSession>
     },
   });
 
-  callbacks.onLog("Connecting to ESP32...");
+  const expectedLabel = chipFamilyLabel(expectedChip);
+  callbacks.onLog(`Connecting to ${expectedLabel}...`);
   callbacks.onProgress({ phase: "Connecting", percent: 0, message: "Detecting chip..." });
   await loader.main();
 
   const chip = loader.chip.CHIP_NAME;
   callbacks.onLog(`Detected: ${chip}`);
 
-  if (!chip.includes("ESP32-S3")) {
+  if (!isChipCompatible(chip, expectedChip)) {
     await transport.disconnect();
-    throw new Error(`Expected ESP32-S3 but detected ${chip}. Make sure you selected the correct board.`);
+    throw new Error(`Expected ${expectedLabel} but detected ${chip}. Make sure you selected the correct board.`);
   }
 
   return { transport, loader };

src/lib/types.ts

@@ -1,4 +1,4 @@
-export type BoardFamily = "esp32s3" | "nrf52840" | "rp2040";
+export type BoardFamily = "esp32" | "esp32s3" | "nrf52840" | "rp2040";
 export type FlashMethod = "web-serial" | "uf2" | "download-only";
 
 export interface BoardDef {