feat: remove HCL support, ACL-only for a3s-code-core

BREAKING CHANGE: a3s-code now only supports ACL format for config

- Remove hcl-rs dependency
- Remove from_hcl() function and all HCL parsing helpers
- Remove hcl_body_to_json, snake_to_camel, hcl_expr_to_json, eval_func_call
- Update agent_api.rs to use ACL format
- Bump version to 1.10.0 for all code SDKs

Author: claude

core/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "a3s-code-core"
-version = "1.9.4"
+version = "1.10.0"
 edition = "2021"
 authors = ["A3S Lab Team"]
 license = "MIT"
@@ -33,9 +33,6 @@ serde_json = "1.0"
 serde_yaml = "0.9"
 toml = "0.8"
 
-# HCL config parsing
-hcl-rs = "0.18"
-
 # ACL config parsing
 a3s-acl = { git = "https://github.com/A3S-Lab/ACL.git", tag = "v0.2.0", version = "0.2.0" }
 

core/src/agent_api.rs

@@ -683,8 +683,8 @@ impl Agent {
             // ACL string (starts with ACL labeled block like providers "openai" { })
             CodeConfig::from_acl(&source).context("Failed to parse config as ACL string")?
         } else {
-            // Try to parse as HCL string
-            CodeConfig::from_hcl(&source).context("Failed to parse config as HCL string")?
+            // Try to parse as ACL string (legacy format without quotes)
+            CodeConfig::from_acl(&source).context("Failed to parse config as ACL string")?
         };
 
         Self::from_config(config).await
@@ -3326,54 +3326,48 @@ dir content
     }
 
     #[tokio::test]
-    async fn test_new_with_hcl_string() {
-        let hcl = r#"
-            default_model = "anthropic/claude-sonnet-4-20250514"
-            providers {
-                name    = "anthropic"
-                api_key = "test-key"
-                models {
-                    id   = "claude-sonnet-4-20250514"
+    async fn test_new_with_acl_string() {
+        let acl = r#"
+            default_model "anthropic/claude-sonnet-4-20250514"
+            providers "anthropic" {
+                apiKey = "test-key"
+                models "claude-sonnet-4-20250514" {
                     name = "Claude Sonnet 4"
                 }
             }
         "#;
-        let agent = Agent::new(hcl).await;
+        let agent = Agent::new(acl).await;
         assert!(agent.is_ok());
     }
 
     #[tokio::test]
-    async fn test_create_alias_hcl() {
-        let hcl = r#"
-            default_model = "anthropic/claude-sonnet-4-20250514"
-            providers {
-                name    = "anthropic"
-                api_key = "test-key"
-                models {
-                    id   = "claude-sonnet-4-20250514"
+    async fn test_create_alias_acl() {
+        let acl = r#"
+            default_model "anthropic/claude-sonnet-4-20250514"
+            providers "anthropic" {
+                apiKey = "test-key"
+                models "claude-sonnet-4-20250514" {
                     name = "Claude Sonnet 4"
                 }
             }
         "#;
-        let agent = Agent::create(hcl).await;
+        let agent = Agent::create(acl).await;
         assert!(agent.is_ok());
     }
 
     #[tokio::test]
     async fn test_create_and_new_produce_same_result() {
-        let hcl = r#"
-            default_model = "anthropic/claude-sonnet-4-20250514"
-            providers {
-                name    = "anthropic"
-                api_key = "test-key"
-                models {
-                    id   = "claude-sonnet-4-20250514"
+        let acl = r#"
+            default_model "anthropic/claude-sonnet-4-20250514"
+            providers "anthropic" {
+                apiKey = "test-key"
+                models "claude-sonnet-4-20250514" {
                     name = "Claude Sonnet 4"
                 }
             }
         "#;
-        let agent_new = Agent::new(hcl).await;
-        let agent_create = Agent::create(hcl).await;
+        let agent_new = Agent::new(acl).await;
+        let agent_create = Agent::create(acl).await;
         assert!(agent_new.is_ok());
         assert!(agent_create.is_ok());