fix: don't run npx --version to check package (triggers broken code path)

is_npm_package_installed() was running 'npx --yes camoufox-browser@0.1.0 --version'
which actually LOADS the package code. If we've removed the bundled
camoufox-js@0.9.3, this fails with 'Cannot open database' error, making
the check return false and triggering a re-install.

Fix: check for daemon.js on disk via npm root -g instead.

Also: install_npm_package() now removes the bundled camoufox-js after
install so the daemon always resolves to the global v0.11.0.

crates/gyandoot-agent/src/browser_manager.rs

@@ -326,17 +326,46 @@ async fn run_fetch(npx: &str, js_version: &str) -> Result<String, String> {
         .to_string())
 }
 
-/// Check if an npm package is already installed globally.
-async fn is_npm_package_installed(npx: &str, package: &str, version: &str) -> bool {
-    Command::new(npx)
-        .args(&["--yes", &format!("{package}@{version}"), "--version"])
+/// Check if an npm package is already installed globally by checking for its daemon.js on disk.
+/// We do NOT run `npx --version` because that actually loads the package code,
+/// which fails if we've removed the bundled camoufox-js dependency.
+async fn is_npm_package_installed(_npx: &str, package: &str, _version: &str) -> bool {
+    // Try `npm root -g` to find global node_modules
+    let root_output = Command::new("npm")
+        .args(&["root", "-g"])
         .output()
-        .await
-        .map(|o| o.status.success())
-        .unwrap_or(false)
+        .await;
+    let global_root = match root_output {
+        Ok(o) if o.status.success() => String::from_utf8_lossy(&o.stdout).trim().to_string(),
+        _ => return false,
+    };
+    let daemon_path = std::path::Path::new(&global_root)
+        .join(package)
+        .join("dist")
+        .join("daemon.js");
+    if daemon_path.exists() {
+        return true;
+    }
+    // Fallback: check common locations
+    let home = dirs::home_dir().unwrap_or_else(|| std::path::PathBuf::from("/tmp"));
+    let fallbacks = vec![
+        home.join(".nvm").join("versions").join("node").join("v22").join("lib").join("node_modules")
+            .join(package).join("dist").join("daemon.js"),
+        home.join(".nvm").join("versions").join("node").join("v24").join("lib").join("node_modules")
+            .join(package).join("dist").join("daemon.js"),
+        std::path::PathBuf::from("/usr/local/lib/node_modules").join(package).join("dist").join("daemon.js"),
+        std::path::PathBuf::from("/opt/homebrew/lib/node_modules").join(package).join("dist").join("daemon.js"),
+    ];
+    for fb in &fallbacks {
+        if fb.exists() {
+            return true;
+        }
+    }
+    false
 }
 
-/// Install an npm package globally.
+/// Install an npm package globally, then remove the bundled camoufox-js
+/// so the daemon uses the globally installed version instead.
 async fn install_npm_package(_npx: &str, package: &str, version: &str) -> Result<String, String> {
     let output = Command::new("npm")
         .args(&["install", "-g", &format!("{package}@{version}")])
@@ -349,6 +378,25 @@ async fn install_npm_package(_npx: &str, package: &str, version: &str) -> Result
         return Err(stderr.lines().last().unwrap_or("(unknown)").to_string());
     }
 
+    // After install, remove the bundled camoufox-js so Node resolves to the global version
+    let root_output = Command::new("npm")
+        .args(&["root", "-g"])
+        .output()
+        .await;
+    if let Ok(o) = root_output {
+        if o.status.success() {
+            let global_root = String::from_utf8_lossy(&o.stdout).trim().to_string();
+            let bundled = std::path::Path::new(&global_root)
+                .join(package)
+                .join("node_modules")
+                .join("camoufox-js");
+            if bundled.exists() {
+                let _ = std::fs::remove_dir_all(&bundled);
+                info!("Removed bundled camoufox-js from {} (daemon will use global version)", package);
+            }
+        }
+    }
+
     Ok(format!("{package}@{version} installed"))
 }