refactor(config): unify config to ai.syui.log/config.json, remove gpt config dependency

src/config.rs

@@ -16,7 +16,7 @@ pub fn shared_config_path() -> String {
     format!("{}/ai.syui.log/config.json", config_dir())
 }
 
-/// Path to aigpt config: $cfg/ai.syui.gpt/config.json
+/// Path to aigpt config (same content as shared, may be symlink)
 pub fn gpt_config_path() -> String {
     format!("{}/ai.syui.gpt/config.json", config_dir())
 }

src/headless.rs

@@ -575,7 +575,7 @@ fn save_to_aigpt_memory(decision: &str, agents: &[serde_json::Value]) {
 }
 
 fn aigpt_memory_dir() -> Option<String> {
-    let config_path = config::gpt_config_path();
+    let config_path = config::shared_config_path();
     let content = std::fs::read_to_string(&config_path).ok()?;
     let config: serde_json::Value = serde_json::from_str(&content).ok()?;