fix: correct filename generation for translated outputs

Fix language code replacement in translation phase to only replace
the language suffix, not all occurrences of the language code string.
This prevents incorrect filenames like "neetcode_gzh-TWeral_ai_zh-TW"
when translating from "general_en" to "general_zh-TW".

- Use rsplit("_", 1) to parse output_key format correctly
- Only replace language code at the end of the key
- Improve html_converter.py parsing logic for robustness

Author: lufftw

tools/ai-markmap-agent/src/graph.py

@@ -392,8 +392,18 @@ def run_translations(state: WorkflowState) -> WorkflowState:
             )
 
             for output_key, content in writer_outputs.items():
-                if source_lang in output_key:
-                    target_key = output_key.replace(source_lang, target_lang)
+                # Parse output_key format: "{type}_{lang}" (e.g., "general_en")
+                parts = output_key.rsplit("_", 1)
+                if len(parts) == 2 and parts[1] == source_lang:
+                    target_key = f"{parts[0]}_{target_lang}"
+                elif source_lang in output_key:
+                    # Fallback: only replace if it's at the end of the string
+                    if output_key.endswith(f"_{source_lang}"):
+                        target_key = output_key[:-len(f"_{source_lang}")] + f"_{target_lang}"
+                    else:
+                        continue  # Skip if source_lang appears but not at the end
+                else:
+                    continue  # Skip if source_lang not found
 
                     try:
                         if debug.enabled:

tools/ai-markmap-agent/src/output/html_converter.py

@@ -248,7 +248,8 @@ def save_all_outputs(
 
         for output_key, content in results.items():
             # Parse output key (e.g., "general_en" or "specialist_zh-TW")
-            parts = output_key.split("_", 1)
+            # Use rsplit to handle language codes that might contain underscores
+            parts = output_key.rsplit("_", 1)
             if len(parts) == 2:
                 output_type, lang = parts
             else: