fix: init creates data/senses dir, generates .js templates without TS annotations

- Add mkdirSync for data/senses/ in init command (#23)
- Add defensive mkdirSync in sense-runtime before DB open (#23)
- Change init template output from index.ts to index.js (#24)
- Remove TypeScript type annotations from CPU usage template (#25)

Closes #23, closes #24, closes #25

packages/cli/src/commands/init.ts

@@ -48,9 +48,9 @@ export const cpuUsage = sqliteTable("cpu_usage", {
 });
 `;
 
-const CPU_INDEX_TS = `import { cpus } from "node:os";
+const CPU_INDEX_JS = `import { cpus } from "node:os";
 
-export async function compute(): Promise<unknown> {
+export async function compute() {
   const cpuList = cpus();
 
   let totalIdle = 0;
@@ -135,13 +135,14 @@ export const initCommand = defineCommand({
     }
 
     mkdirSync(join(nerveRoot, "data"), { recursive: true });
+    mkdirSync(join(nerveRoot, "data", "senses"), { recursive: true });
     mkdirSync(join(nerveRoot, "senses", "cpu-usage", "migrations"), { recursive: true });
 
     writeFile(join(nerveRoot, "nerve.yaml"), NERVE_YAML);
     writeFile(join(nerveRoot, "package.json"), PACKAGE_JSON);
     writeFile(join(nerveRoot, ".gitignore"), GITIGNORE);
     writeFile(join(nerveRoot, "senses", "cpu-usage", "schema.ts"), CPU_SCHEMA_TS);
-    writeFile(join(nerveRoot, "senses", "cpu-usage", "index.ts"), CPU_INDEX_TS);
+    writeFile(join(nerveRoot, "senses", "cpu-usage", "index.js"), CPU_INDEX_JS);
     writeFile(
       join(nerveRoot, "senses", "cpu-usage", "migrations", "0001_init.sql"),
       CPU_MIGRATION_SQL,

packages/daemon/src/sense-runtime.ts

@@ -1,5 +1,5 @@
-import { readFileSync, readdirSync } from "node:fs";
-import { join } from "node:path";
+import { mkdirSync, readFileSync, readdirSync } from "node:fs";
+import { dirname, join } from "node:path";
 
 import Database from "better-sqlite3";
 import { drizzle } from "drizzle-orm/better-sqlite3";
@@ -128,6 +128,7 @@ export function openSenseDb(
   let sqlite: Database.Database;
 
   try {
+    mkdirSync(dirname(dbPath), { recursive: true });
     sqlite = new Database(dbPath);
     // WAL mode for better concurrent read performance
     sqlite.pragma("journal_mode = WAL");