diff --git a/Cargo.lock b/Cargo.lock
index 7c4b8a5c..9fd2b0db 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1502,6 +1502,15 @@ dependencies = [
  "wasm-bindgen",
 ]
 
+[[package]]
+name = "jsonc-parser"
+version = "0.29.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9eb0774546269185d38da823d8583e94448ba0e158e3f50759d9c79aba946ca5"
+dependencies = [
+ "serde_json",
+]
+
 [[package]]
 name = "konst"
 version = "0.2.19"
@@ -3319,8 +3328,10 @@ dependencies = [
  "copy_dir",
  "cow-utils",
  "insta",
+ "jsonc-parser",
  "regex",
  "serde",
+ "serde_json",
  "tempfile",
  "tokio",
  "toml",
@@ -3338,6 +3349,7 @@ dependencies = [
  "anyhow",
  "async-trait",
  "clap",
+ "jsonc-parser",
  "monostate",
  "petgraph",
  "pretty_assertions",
diff --git a/Cargo.toml b/Cargo.toml
index 4595da9f..6ca05928 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -75,6 +75,7 @@ fspy_test_utils = { path = "crates/fspy_test_utils" }
 futures = "0.3.31"
 futures-util = "0.3.31"
 insta = "1.44.3"
+jsonc-parser = { version = "0.29.0", features = ["serde"] }
 libc = "0.2.172"
 memmap2 = "0.9.7"
 monostate = "1.0.2"
diff --git a/crates/vite_task_bin/Cargo.toml b/crates/vite_task_bin/Cargo.toml
index 879a468b..29c22a15 100644
--- a/crates/vite_task_bin/Cargo.toml
+++ b/crates/vite_task_bin/Cargo.toml
@@ -14,6 +14,8 @@ path = "src/main.rs"
 anyhow = { workspace = true }
 async-trait = { workspace = true }
 clap = { workspace = true, features = ["derive"] }
+jsonc-parser = { workspace = true }
+serde_json = { workspace = true }
 tokio = { workspace = true, features = ["full"] }
 vite_path = { workspace = true }
 vite_str = { workspace = true }
diff --git a/crates/vite_task_bin/src/lib.rs b/crates/vite_task_bin/src/lib.rs
index 1284f415..49fd6a06 100644
--- a/crates/vite_task_bin/src/lib.rs
+++ b/crates/vite_task_bin/src/lib.rs
@@ -135,10 +135,37 @@ impl vite_task::TaskSynthesizer<CustomTaskSubcommand> for TaskSynthesizer {
     }
 }
 
+/// A `UserConfigLoader` implementation that only loads `vite-task.json`.
+///
+/// This is mainly for examples and testing as it does not require Node.js environment.
+#[derive(Default, Debug)]
+pub struct JsonUserConfigLoader(());
+
+#[async_trait::async_trait(?Send)]
+impl vite_task::loader::UserConfigLoader for JsonUserConfigLoader {
+    async fn load_user_config_file(
+        &self,
+        package_path: &AbsolutePath,
+    ) -> anyhow::Result<Option<vite_task::config::UserRunConfig>> {
+        let config_path = package_path.join("vite-task.json");
+        let config_content = match tokio::fs::read_to_string(&config_path).await {
+            Ok(content) => content,
+            Err(err) if err.kind() == std::io::ErrorKind::NotFound => {
+                return Ok(None);
+            }
+            Err(err) => return Err(err.into()),
+        };
+        let json_value = jsonc_parser::parse_to_serde_value(&config_content, &Default::default())?
+            .unwrap_or_default();
+        let user_config: vite_task::config::UserRunConfig = serde_json::from_value(json_value)?;
+        Ok(Some(user_config))
+    }
+}
+
 #[derive(Default)]
 pub struct OwnedSessionCallbacks {
     task_synthesizer: TaskSynthesizer,
-    user_config_loader: vite_task::loader::JsonUserConfigLoader,
+    user_config_loader: JsonUserConfigLoader,
 }
 
 impl OwnedSessionCallbacks {
diff --git a/crates/vite_task_bin/tests/e2e_snapshots/fixtures/vite-task-smoke/vite-task.json b/crates/vite_task_bin/tests/e2e_snapshots/fixtures/vite-task-smoke/vite-task.json
index 1d0fe9f2..43bed5d7 100644
--- a/crates/vite_task_bin/tests/e2e_snapshots/fixtures/vite-task-smoke/vite-task.json
+++ b/crates/vite_task_bin/tests/e2e_snapshots/fixtures/vite-task-smoke/vite-task.json
@@ -1,3 +1,4 @@
 {
+  // Smoke test: enables caching for all package.json scripts.
   "cacheScripts": true
 }
diff --git a/crates/vite_task_graph/Cargo.toml b/crates/vite_task_graph/Cargo.toml
index 17fc8225..36b32dc8 100644
--- a/crates/vite_task_graph/Cargo.toml
+++ b/crates/vite_task_graph/Cargo.toml
@@ -15,7 +15,6 @@ petgraph = { workspace = true }
 serde = { workspace = true, features = ["derive"] }
 serde_json = { workspace = true }
 thiserror = { workspace = true }
-tokio = { workspace = true, features = ["fs"] }
 vec1 = { workspace = true, features = ["smallvec-v1"] }
 vite_graph_ser = { workspace = true }
 vite_path = { workspace = true }
@@ -24,7 +23,6 @@ vite_workspace = { workspace = true }
 
 [dev-dependencies]
 pretty_assertions = { workspace = true }
-tokio = { workspace = true, features = ["fs", "rt-multi-thread"] }
 ts-rs = { workspace = true }
 vite_path = { workspace = true, features = ["ts-rs"] }
 vite_str = { workspace = true, features = ["ts-rs"] }
diff --git a/crates/vite_task_graph/src/loader.rs b/crates/vite_task_graph/src/loader.rs
index 8a192fdc..d00f2dfe 100644
--- a/crates/vite_task_graph/src/loader.rs
+++ b/crates/vite_task_graph/src/loader.rs
@@ -12,28 +12,3 @@ pub trait UserConfigLoader: Debug + Send + Sync {
         package_path: &AbsolutePath,
     ) -> anyhow::Result<Option<UserRunConfig>>;
 }
-
-/// A `UserConfigLoader` implementation that only loads `vite-task.json`.
-///
-/// This is mainly for examples and testing as it does not require Node.js environment.
-#[derive(Default, Debug)]
-pub struct JsonUserConfigLoader(());
-
-#[async_trait::async_trait(?Send)]
-impl UserConfigLoader for JsonUserConfigLoader {
-    async fn load_user_config_file(
-        &self,
-        package_path: &AbsolutePath,
-    ) -> anyhow::Result<Option<UserRunConfig>> {
-        let config_path = package_path.join("vite-task.json");
-        let config_content = match tokio::fs::read_to_string(&config_path).await {
-            Ok(content) => content,
-            Err(err) if err.kind() == std::io::ErrorKind::NotFound => {
-                return Ok(None);
-            }
-            Err(err) => return Err(err.into()),
-        };
-        let user_config: UserRunConfig = serde_json::from_str(&config_content)?;
-        Ok(Some(user_config))
-    }
-}
diff --git a/crates/vite_task_plan/tests/plan_snapshots/fixtures/cache-scripts-enabled/vite-task.json b/crates/vite_task_plan/tests/plan_snapshots/fixtures/cache-scripts-enabled/vite-task.json
index 1d0fe9f2..e9f7182a 100644
--- a/crates/vite_task_plan/tests/plan_snapshots/fixtures/cache-scripts-enabled/vite-task.json
+++ b/crates/vite_task_plan/tests/plan_snapshots/fixtures/cache-scripts-enabled/vite-task.json
@@ -1,3 +1,4 @@
 {
+  // Enables caching for all package.json scripts in the workspace.
   "cacheScripts": true
 }
diff --git a/crates/vite_task_plan/tests/plan_snapshots/fixtures/comprehensive-task-graph/vite-task.json b/crates/vite_task_plan/tests/plan_snapshots/fixtures/comprehensive-task-graph/vite-task.json
index 1d0fe9f2..e9f7182a 100644
--- a/crates/vite_task_plan/tests/plan_snapshots/fixtures/comprehensive-task-graph/vite-task.json
+++ b/crates/vite_task_plan/tests/plan_snapshots/fixtures/comprehensive-task-graph/vite-task.json
@@ -1,3 +1,4 @@
 {
+  // Enables caching for all package.json scripts in the workspace.
   "cacheScripts": true
 }
diff --git a/crates/vite_task_plan/tests/plan_snapshots/fixtures/workspace-root-no-package-json/vite-task.json b/crates/vite_task_plan/tests/plan_snapshots/fixtures/workspace-root-no-package-json/vite-task.json
index f07f1a9c..e79ab80a 100644
--- a/crates/vite_task_plan/tests/plan_snapshots/fixtures/workspace-root-no-package-json/vite-task.json
+++ b/crates/vite_task_plan/tests/plan_snapshots/fixtures/workspace-root-no-package-json/vite-task.json
@@ -1,4 +1,6 @@
 {
+  // This workspace root has no package.json — only pnpm-workspace.yaml.
+  // vite-task.json should still be loaded and applied.
   "cacheScripts": true,
   "tasks": {
     "deploy": {