feat(components): move 6 API components to independent WASM Workers

Deploys gmail, telegram, line_notify, google_sheets, http_request, cron
as independent Cloudflare Workers at {name-kebab}.arcrun.dev. Each
wraps the TinyGo WASM from registry/components/{name}/main.go via
wasi-shim cross-import (Method A).

component-loader no longer carries BUILTIN_API_RECIPES — those
hardcoded gmail.googleapis.com / api.telegram.org / sheets / line-notify
endpoints all lived in TS, violating "all business logic in WASM".
Resolution chain now routes the 6 canonical IDs straight to their
{name}.arcrun.dev Worker URLs via WASM_HTTP_RUNNER_IDS.

Per .agents/specs/arcrun/credential-primitives-wasm Phase 3.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.component-builds/cron/src/index.ts

@@ -0,0 +1,67 @@
+/**
+ * arcrun API component Worker (cron)
+ *
+ * POST / → JSON input → WASM (WASI preview1 stdin/stdout) → JSON output
+ *
+ * cron 純計算(cron 表達式 → 下一個觸發時間),沒有 host function 需求。
+ * 方案 A:import cypher-executor/src/lib/wasi-shim.ts 的 `createWasiShim`,
+ * 不提供任何 hostFunctions(WASM 側也沒 `//go:wasmimport u6u` 宣告)。
+ */
+
+import componentWasm from '../component.wasm' assert { type: 'webassembly' };
+import { Hono } from 'hono';
+import { cors } from 'hono/cors';
+import { createWasiShim } from '../../../cypher-executor/src/lib/wasi-shim';
+
+const app = new Hono();
+app.use('*', cors());
+
+app.get('/', (c) => c.json({ ok: true, component: 'cron' }));
+
+app.post('/', async (c) => {
+  let input: unknown;
+  try {
+    input = await c.req.json();
+  } catch {
+    return c.json({ success: false, error: 'request body must be JSON' }, 400);
+  }
+
+  try {
+    const result = await runWasm(input);
+    return c.json(result);
+  } catch (e) {
+    return c.json(
+      { success: false, error: e instanceof Error ? e.message : String(e) },
+      500,
+    );
+  }
+});
+
+export default app;
+
+// ── WASM runner ──────────────────────────────────────────────────────────────
+
+async function runWasm(input: unknown): Promise<unknown> {
+  const shim = createWasiShim(JSON.stringify(input));
+
+  const instance = await WebAssembly.instantiate(
+    componentWasm as WebAssembly.Module,
+    shim.imports,
+  );
+  shim.setMemory(instance.exports.memory as WebAssembly.Memory);
+
+  const start = (instance.exports._start ?? instance.exports.main) as () => void;
+  if (typeof start !== 'function') {
+    throw new Error('WASM missing _start or main export');
+  }
+
+  try {
+    start();
+  } catch (e) {
+    if (!(e instanceof Error && e.message === 'wasm exit: 0')) throw e;
+  }
+
+  const stdout = shim.getStdout().trim();
+  if (!stdout) throw new Error('WASM component produced no output');
+  return JSON.parse(stdout);
+}