Add support for retrieving changes directly from session.

Circumvents issues with too long URI on large changes (typically with complex chat templates).

app.py

@@ -1025,8 +1025,10 @@ Any framework based on `llama-cpp-python` will let you select which chat templat
         if meta.rem or meta.add:
             link += '&' + urlencode(
                 {
-                    'rem': meta.rem,
-                    'add': [json.dumps([k, *v], ensure_ascii = False, separators = (',', ':')) for k, v in meta.add.items()],
+                    'session': request.session_hash,
+                    'state': str(meta_state._id),
+                    # 'rem': meta.rem,
+                    # 'add': [json.dumps([k, *v], ensure_ascii = False, separators = (',', ':')) for k, v in meta.add.items()],
                 },
                 doseq = True,
                 safe = '[]{}:"\',',
@@ -1431,6 +1433,8 @@ if __name__ == "__main__":
         branch: Annotated[str, Query()] = "main",
         add: Annotated[list[str] | None, Query()] = None,
         rem: Annotated[list[str] | None, Query()] = None,
+        session: Annotated[str | None, Query()] = None,
+        state: Annotated[int | None, Query()] = None,
     ):
         token = request.session.get('oauth_info', {}).get('access_token')
 
@@ -1440,6 +1444,15 @@ if __name__ == "__main__":
                 detail = 'Invalid repository',
             )
 
+        if session and state is not None and session in request.app.state_holder and state in request.app.state_holder[session]:
+            meta: MetadataState = request.app.state_holder[session][state]
+
+            if meta.rem:
+                rem = list(meta.rem)
+
+            if meta.add:
+                add = [json.dumps([k, *v], ensure_ascii = False, separators = (',', ':')) for k, v in meta.add.items()]
+
         stream = stream_repo_file(
             repo_file,
             branch,