Fix domain vault init check in finish_crawl/get_stats

- Add _initialized check to finish_crawl() and get_stats() in all 3 vault classes
- Prevents FileNotFoundError when git commands run on non-existent directories
- Update test_crawl.py to use pytest tmp_path fixture
- Add network marker to skip functional tests in CI with '-m "not network"'

neopig/domain_vault.py

@@ -372,6 +372,9 @@ class DomainHtmlVault:
 
     async def finish_crawl(self, stats: Dict[str, Any]) -> Optional[str]:
         """Finish crawl, log it, and commit if changes."""
+        if not self._initialized:
+            await self.init()
+
         log = await self._load_crawl_log()
         log['crawls'].append({
             'timestamp': datetime.now(timezone.utc).isoformat(),
@@ -386,6 +389,9 @@ class DomainHtmlVault:
 
     async def get_stats(self) -> Dict[str, Any]:
         """Get vault statistics."""
+        if not self._initialized:
+            await self.init()
+
         log = await self._load_crawl_log()
         commits = await self._git.log(5)
 
@@ -510,6 +516,9 @@ class DomainMediaVault:
 
     async def finish_crawl(self, stats: Dict[str, Any]) -> Optional[str]:
         """Finish crawl and commit if changes."""
+        if not self._initialized:
+            await self.init()
+
         media_new = stats.get('media_new', 0)
         if media_new > 0:
             return await self._git.commit(f"Crawl: {media_new} media files")
@@ -517,6 +526,9 @@ class DomainMediaVault:
 
     async def get_stats(self) -> Dict[str, Any]:
         """Get vault statistics."""
+        if not self._initialized:
+            await self.init()
+
         index = await self._load_index()
         commits = await self._git.log(5)
 
@@ -649,6 +661,9 @@ class DomainLinkpeekVault:
 
     async def finish_crawl(self, stats: Dict[str, Any]) -> Optional[str]:
         """Finish crawl and commit if changes."""
+        if not self._initialized:
+            await self.init()
+
         screenshots_new = stats.get('screenshots_new', 0)
         if screenshots_new > 0:
             return await self._git.commit(f"Crawl: {screenshots_new} screenshots")
@@ -656,6 +671,9 @@ class DomainLinkpeekVault:
 
     async def get_stats(self) -> Dict[str, Any]:
         """Get vault statistics."""
+        if not self._initialized:
+            await self.init()
+
         index = await self._load_index()
         commits = await self._git.log(5)