feat: check OLLAMA_HOST reachability before starting translationv1.6

Non-blocking QThread check hits /api/tags on the resolved ollama host
before launching TranslationWorker. Shows QMessageBox.warning() if
unreachable; proceeds silently if reachable. Adds ollama_host field to
Config with env-var fallback to http://localhost:11434.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/core/config.py b/core/config.py
index 68a8b87..6b8662c 100644
--- a/core/config.py
+++ b/core/config.py
@@ -12,10 +12,15 @@ class Config:
     typora_bin: str = "typora"
     typora_args: str = ""
     font_size: int = 10
+    ollama_host: str = ""
 
     def is_complete(self) -> bool:
         return bool(self.blog_repo)
 
+    def resolved_ollama_host(self) -> str:
+        import os
+        return self.ollama_host or os.environ.get("OLLAMA_HOST", "http://localhost:11434")
+
     def save(self, path: Path = DEFAULT_CONFIG_PATH) -> None:
         path.parent.mkdir(parents=True, exist_ok=True)
         doc = tomlkit.document()
@@ -24,6 +29,7 @@ class Config:
         doc.add("typora_bin", self.typora_bin)
         doc.add("typora_args", self.typora_args)
         doc.add("font_size", self.font_size)
+        doc.add("ollama_host", self.ollama_host)
         path.write_text(tomlkit.dumps(doc))
 
     @classmethod
@@ -38,4 +44,5 @@ class Config:
             typora_bin=str(data.get("typora_bin", defaults.typora_bin)),
             typora_args=str(data.get("typora_args", defaults.typora_args)),
             font_size=int(data.get("font_size", defaults.font_size)),
+            ollama_host=str(data.get("ollama_host", defaults.ollama_host)),
         )