Cron detail page with output history, markdown skill rendering

- /cron/[id]: job details, prompt, output history from filesystem
- Cron list items now link to detail pages
- Skills render SKILL.md as proper markdown (headings, code, tables)
- Cron output proxy reads from ~/.hermes/cron/output/

app/cron/jobs/[id]/output/route.ts

@@ -0,0 +1,29 @@
+import { NextRequest, NextResponse } from "next/server";
+import { promises as fs } from "fs";
+import path from "path";
+
+const OUTPUT_DIR = process.env.HERMES_CRON_OUTPUT || "/home/hermes/.hermes/cron/output";
+
+export async function GET(_req: NextRequest, { params }: { params: Promise<{ id: string }> }) {
+  const { id } = await params;
+  const jobDir = path.join(OUTPUT_DIR, id);
+
+  try {
+    const files = await fs.readdir(jobDir);
+    const outputs = await Promise.all(
+      files
+        .filter((f) => f.endsWith(".md"))
+        .sort()
+        .reverse()
+        .slice(0, 20)
+        .map(async (f) => {
+          const content = await fs.readFile(path.join(jobDir, f), "utf-8");
+          const timestamp = f.replace(".md", "").replace(/_/g, " ");
+          return { timestamp, content };
+        })
+    );
+    return NextResponse.json({ outputs });
+  } catch {
+    return NextResponse.json({ outputs: [] });
+  }
+}