fix(docs): correct API route prefix — strip /api to match Flask proxy convention

- Flask docs routes changed from /api/docs to /docs (no /api prefix)
  because hooks.server.ts proxies /api/* by stripping /api, so /api/docs
  reached Flask as /docs (404). Other routes (lessons, help) also lack /api.
- Frontend load functions now fetch /docs and /docs/<slug> (not /api/docs)
- Fixes 500 on /docs SSR (proxy ECONNREFUSED / 404 from stripped route)

frontend/src/routes/docs/+page.ts

@@ -3,7 +3,7 @@ import type { DocsIndexEntry } from '$types/docs';
 import { error } from '@sveltejs/kit';
 
 export const load: PageLoad = async ({ fetch }) => {
-	const res = await fetch('/api/docs');
+	const res = await fetch('/docs');
 	if (!res.ok) {
 		throw error(500, 'Gagal memuat daftar dokumentasi');
 	}

frontend/src/routes/docs/[slug]/+page.ts

@@ -3,7 +3,7 @@ import type { DocContent } from '$types/docs';
 import { error } from '@sveltejs/kit';
 
 export const load: PageLoad = async ({ params, fetch }) => {
-	const res = await fetch(`/api/docs/${params.slug}`);
+	const res = await fetch(`/docs/${params.slug}`);
 	if (!res.ok) {
 		throw error(404, 'Dokumen tidak ditemukan');
 	}

routes/docs.py

@@ -16,14 +16,14 @@ from services.docs_service import get_docs_index, get_doc_content
 docs_bp = Blueprint("docs_api", __name__)
 
 
-@docs_bp.route("/api/docs")
+@docs_bp.route("/docs")
 def api_docs_index():
     """List all docs files with metadata, sorted by order."""
     docs = get_docs_index()
     return jsonify({"docs": docs})
 
 
-@docs_bp.route("/api/docs/<slug>")
+@docs_bp.route("/docs/<slug>")
 def api_doc_detail(slug):
     """Return rendered HTML + metadata for a single doc by slug."""
     data = get_doc_content(slug)
@@ -32,7 +32,7 @@ def api_doc_detail(slug):
     return jsonify(data)
 
 
-@docs_bp.route("/api/docs/api-reference")
+@docs_bp.route("/docs/api-reference")
 def api_reference():
     """Generate API reference from route docstrings.