Initial MVP: Cost.dev AI Coding Cost Optimizer Chrome extension

generate-icons.cjs

@@ -0,0 +1,70 @@
+// Minimal PNG generator — run before build to create icon files
+const { writeFileSync, mkdirSync } = require('fs')
+
+function crc32(buf) {
+  const table = new Int32Array(256)
+  for (let i = 0; i < 256; i++) {
+    let c = i
+    for (let k = 0; k < 8; k++) c = (c & 1) ? (0xedb88320 ^ (c >>> 1)) : (c >>> 1)
+    table[i] = c
+  }
+  let crc = -1
+  for (let i = 0; i < buf.length; i++) crc = table[(crc ^ buf[i]) & 0xff] ^ (crc >>> 8)
+  return crc ^ -1
+}
+
+function pngChunk(type, data) {
+  const len = data.length
+  const chunk = new Uint8Array(4 + 4 + len + 4)
+  const view = new DataView(chunk.buffer)
+  view.setUint32(0, len, false)
+  chunk.set(new TextEncoder().encode(type), 4)
+  chunk.set(data, 8)
+  const crc = crc32(chunk.slice(4, 8 + len))
+  view.setUint32(8 + len, crc, false)
+  return chunk
+}
+
+function generatePNG(size, color) {
+  const header = new Uint8Array([0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a])
+  const ihdr = new Uint8Array(13)
+  const v = new DataView(ihdr.buffer)
+  v.setUint32(0, size, false)
+  v.setUint32(4, size, false)
+  v.setUint8(8, 8)
+  v.setUint8(9, 2)
+  v.setUint8(10, 0)
+  v.setUint8(11, 0)
+  v.setUint8(12, 0)
+
+  const rowLen = 1 + size * 3
+  const raw = new Uint8Array(size * rowLen)
+  for (let y = 0; y < size; y++) {
+    raw[y * rowLen] = 0
+    for (let x = 0; x < size; x++) {
+      const off = y * rowLen + 1 + x * 3
+      raw[off] = color[0]
+      raw[off + 1] = color[1]
+      raw[off + 2] = color[2]
+    }
+  }
+
+  const compressed = new Uint8Array(require('zlib').deflateSync(raw))
+  const idat = pngChunk('IDAT', compressed)
+  const iend = pngChunk('IEND', new Uint8Array(0))
+
+  const out = new Uint8Array(header.length + 4 + 4 + 13 + 4 + idat.length + iend.length)
+  let p = 0
+  out.set(header, p); p += header.length
+  out.set(pngChunk('IHDR', ihdr), p); p += 4 + 4 + 13 + 4
+  out.set(idat, p); p += idat.length
+  out.set(iend, p)
+  return out
+}
+
+mkdirSync('icons', { recursive: true })
+const teal = [0, 180, 170]
+writeFileSync('icons/icon16.png', generatePNG(16, teal))
+writeFileSync('icons/icon48.png', generatePNG(48, teal))
+writeFileSync('icons/icon128.png', generatePNG(128, teal))
+console.log('Icons generated')