Add Skills browser, Cron jobs, SOUL.md editor

- Skills: categorized list with search, detail view with markdown
- Cron: job list grouped by status, manual trigger button
- Soul: full SOUL.md editor with save/revert
- Pulse: quick link cards to Skills, Cron, Soul
- All routes proxied server-side (no CORS)

app/soul/api/route.ts

@@ -0,0 +1,23 @@
+import { NextRequest, NextResponse } from "next/server";
+import { promises as fs } from "fs";
+
+const SOUL_PATH = process.env.HERMES_SOUL_PATH || "/home/hermes/.hermes/SOUL.md";
+
+export async function GET() {
+  try {
+    const content = await fs.readFile(SOUL_PATH, "utf-8");
+    return NextResponse.json({ content });
+  } catch {
+    return NextResponse.json({ content: "" });
+  }
+}
+
+export async function PUT(req: NextRequest) {
+  try {
+    const { content } = await req.json();
+    await fs.writeFile(SOUL_PATH, content, "utf-8");
+    return NextResponse.json({ ok: true });
+  } catch (e) {
+    return NextResponse.json({ error: String(e) }, { status: 500 });
+  }
+}