Fix base path on web and fullstack (#3247)

* Create a crate for constant serialization of config structs for manganis

* use SerializeConst for the image asset builder

* switch to a declarative macro for assets

* clean up asset macro a bit

* add serializable options for each asset type

* serialize const vec

* Add unique path formatting

* implement the new manganis macro

* optimize assets in the CLI

* Fix clippy

* Fix assets with dioxus formattable

* reduce fuzzing test limits

* use the new syntax in examples

* fix formatting

* Final doc and test pass on const-serialize

* fix avif support

* Fix manganis doc tests

* cache asset optimization

* Split out asset and bundled asset

* make hash pointer width independent

* remove const serialize cargo lock

* Fix manganis macro docs

* all tests passing

* add constvec::is_empty method to fix clippy lint

* remove nasm feature

* simplify test_rsplit_once test so typos passes

* fix range syntax for stable

* revert example change from clippy fix

* remove dioxus-static-site-generation workspace dependency

* always accept unix paths

* fix windows path seperator

* fix folder asset hash

* Optimize assets in a blocking task

* Fix asset options docs

* Document Asset and BundledAsset

* move manganis back into it's own folder

* simplify the linker macro a bit

* add more docs to AssetParser expansion

* fix manganis core doc test

* add image format helpers

* Fill in new cargo.tomls

* fix folders with explicit options

* Split by  both unix and windows path separators and take the smallest one

* fix string length

* Fix base path on web and fullstack

* Fix assets with base path

* fix fullstack base route with trailing slash

* fix clippy

packages/cli/src/serve/handle.rs

@@ -69,7 +69,11 @@ impl AppHandle {
         // Set the env vars that the clients will expect
         // These need to be stable within a release version (ie 0.6.0)
         let mut envs = vec![
-            ("DIOXUS_CLI_ENABLED", "true".to_string()),
+            (dioxus_cli_config::CLI_ENABLED_ENV, "true".to_string()),
+            (
+                dioxus_cli_config::APP_TITLE_ENV,
+                self.app.build.krate.config.web.app.title.clone(),
+            ),
             ("RUST_BACKTRACE", "1".to_string()),
             (
                 dioxus_cli_config::DEVSERVER_RAW_ADDR_ENV,
@@ -80,6 +84,10 @@ impl AppHandle {
             ("CARGO_MANIFEST_DIR", "".to_string()),
         ];
 
+        if let Some(base_path) = &self.app.build.krate.config.web.app.base_path {
+            envs.push((dioxus_cli_config::ASSET_ROOT_ENV, base_path.clone()));
+        }
+
         if let Some(addr) = fullstack_address {
             envs.push((dioxus_cli_config::SERVER_IP_ENV, addr.ip().to_string()));
             envs.push((dioxus_cli_config::SERVER_PORT_ENV, addr.port().to_string()));
@@ -109,7 +117,7 @@ impl AppHandle {
             Platform::Web => {
                 // Only the first build we open the web app, after that the user knows it's running
                 if open_browser {
-                    self.open_web(envs, devserver_ip);
+                    self.open_web(devserver_ip);
                 }
 
                 None
@@ -212,7 +220,7 @@ impl AppHandle {
     /// Open the web app by opening the browser to the given address.
     /// Check if we need to use https or not, and if so, add the protocol.
     /// Go to the basepath if that's set too.
-    fn open_web(&self, _envs: Vec<(&str, String)>, address: SocketAddr) {
+    fn open_web(&self, address: SocketAddr) {
         let base_path = self.app.build.krate.config.web.app.base_path.clone();
         let https = self
             .app

packages/cli/src/serve/mod.rs

@@ -231,7 +231,9 @@ pub(crate) async fn serve_all(mut args: ServeArgs) -> Result<()> {
             }
 
             ServeUpdate::OpenApp => {
-                runner.open_existing(&devserver).await;
+                if let Err(err) = runner.open_existing(&devserver).await {
+                    tracing::error!("Failed to open app: {err}")
+                }
             }
 
             ServeUpdate::Redraw => {

packages/cli/src/serve/runner.rs

@@ -146,12 +146,15 @@ impl AppRunner {
     }
 
     /// Open an existing app bundle, if it exists
-    pub(crate) async fn open_existing(&self, devserver: &WebServer) {
-        if let Some(address) = devserver.server_address() {
-            let url = format!("http://{address}");
-            tracing::debug!("opening url: {url}");
-            _ = open::that(url);
+    pub(crate) async fn open_existing(&mut self, devserver: &WebServer) -> Result<()> {
+        if let Some((_, app)) = self
+            .running
+            .iter_mut()
+            .find(|(platform, _)| **platform != Platform::Server)
+        {
+            app.open(devserver.devserver_address(), None, true).await?;
         }
+        Ok(())
     }
 
     pub(crate) fn attempt_hot_reload(