v0.1.34: Fix URL resolution and JSON parsing errors

- Fixed scan URL to use relative 'scan' instead of '/scan' for Home Assistant ingress
- Improved error handling for non-JSON and malformed API responses
- Added better debugging for JSON parsing errors
- Updated version to 0.1.34 in all files

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

fichero_printer/fichero/api.py

@@ -77,7 +77,7 @@ async def lifespan(app: FastAPI):  # noqa: ARG001
 app = FastAPI(
     title="Fichero Printer API",
     description="REST API for the Fichero D11s (AiYin) thermal label printer.",
-    version = "0.1.33",
+    version = "0.1.34",
     lifespan=lifespan,
     docs_url=None,
     redoc_url=None,
@@ -153,14 +153,25 @@ def _ui_html() -> str:
         console.log('Starting scan request...');
         
         try {
-            const response = await fetch('/scan');
+            const response = await fetch('scan');
             
             if (!response.ok) {
-                const error = await response.json();
-                throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+                try {
+                    const error = await response.json();
+                    throw new Error(error.detail || `HTTP error! status: ${response.status}`);
+                } catch (e) {
+                    const text = await response.text();
+                    throw new Error(`HTTP error! status: ${response.status}, response: ${text}`);
+                }
             }
             
-            const devices = await response.json();
+            let devices;
+            try {
+                devices = await response.json();
+            } catch (e) {
+                const text = await response.text();
+                throw new Error(`Invalid JSON response: ${text}`);
+            }
             
             if (devices.length === 0) {
                 resultsEl.textContent = '📡 No BLE devices found.\n\nTroubleshooting tips:\n- Make sure your printer is powered on\n- Ensure Bluetooth is enabled on this device\n- Bring the printer closer (within 5 meters)\n- Try restarting the printer';