Fix sidecar.zip not bundled: move resources config into tauri.conf.json

The TAURI_CONFIG env var approach for resources wasn't being applied
by the NSIS bundler, so sidecar.zip was never included in the installer.

- Add resources: ["sidecar.zip"] directly to tauri.conf.json
- build.rs creates a minimal placeholder zip for dev builds so
  compilation succeeds even without the real sidecar
- Remove TAURI_CONFIG env var from all CI workflows (no longer needed)
- Add sidecar.zip to .gitignore (generated by CI, not tracked)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src-tauri/build.rs

@@ -1,3 +1,21 @@
 fn main() {
+    // Ensure sidecar.zip exists so tauri-build doesn't fail.
+    // CI replaces this placeholder with the real PyInstaller sidecar archive.
+    let zip_path = std::path::Path::new("sidecar.zip");
+    if !zip_path.exists() {
+        // Minimal valid zip (empty archive): end-of-central-directory record
+        let empty_zip: [u8; 22] = [
+            0x50, 0x4b, 0x05, 0x06, // EOCD signature
+            0x00, 0x00, // disk number
+            0x00, 0x00, // disk with central dir
+            0x00, 0x00, // entries on this disk
+            0x00, 0x00, // total entries
+            0x00, 0x00, 0x00, 0x00, // central dir size
+            0x00, 0x00, 0x00, 0x00, // central dir offset
+            0x00, 0x00, // comment length
+        ];
+        std::fs::write(zip_path, empty_zip).expect("Failed to create placeholder sidecar.zip");
+    }
+
     tauri_build::build()
 }

src-tauri/tauri.conf.json

@@ -42,6 +42,7 @@
     "category": "Utility",
     "shortDescription": "Transcribe audio/video with speaker identification",
     "longDescription": "Voice to Notes is a desktop application that transcribes audio and video recordings with speaker identification, synchronized playback, and AI-powered analysis. Export to SRT, WebVTT, ASS captions, or plain text.",
+    "resources": ["sidecar.zip"],
     "copyright": "Voice to Notes Contributors",
     "license": "MIT",
     "linux": {