Fix venue template mapping: EuroMLSys, SOSP, OSDI, USENIX formats

- EuroMLSys format was "sigplan" but template dir is "euromlsys"
- SOSP/EuroSys format was "acm" → changed to "sosp" (matching template)
- OSDI/NSDI/ATC format was "usenix" → changed to "osdi" (matching template)
- IEEE S&P → falls back to "neurips" template (closest single-col)
- Added latex_geometry aliases: osdi→usenix, nsdi→usenix, eurosys→acmart-large

This fixes "Waiting for template" errors when creating projects for these venues.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: JihaoXin

ark/latex_geometry.py

@@ -122,6 +122,10 @@
     "pldi": "acmart-sigplan",
     "asplos": "acmart-large",
     "sosp": "acmart-large",
+    "eurosys": "acmart-large",
+    "osdi": "usenix",
+    "nsdi": "usenix",
+    "atc": "usenix",
     "iclr": "neurips",
     "infocom": "ieee",
 }

ark/webapp/routes.py

@@ -1049,14 +1049,14 @@ async def api_venues():
         {"name": "EMNLP",      "format": "emnlp",    "pages": 8},
         {"name": "CVPR",       "format": "cvpr",     "pages": 8},
         {"name": "MLSys",      "format": "mlsys",    "pages": 8},
-        {"name": "EuroMLSys",  "format": "sigplan",  "pages": 6},
+        {"name": "EuroMLSys",  "format": "euromlsys",  "pages": 6},
         # Systems
-        {"name": "SOSP",       "format": "acm",      "pages": 14},
-        {"name": "EuroSys",    "format": "acm",      "pages": 12},
-        {"name": "NSDI",       "format": "usenix",   "pages": 14},
-        {"name": "OSDI",       "format": "usenix",   "pages": 14},
-        {"name": "USENIX ATC", "format": "usenix",   "pages": 12},
-        {"name": "IEEE S&P",   "format": "ieee",     "pages": 13},
+        {"name": "SOSP",       "format": "sosp",     "pages": 14},
+        {"name": "EuroSys",    "format": "sosp",     "pages": 12},
+        {"name": "NSDI",       "format": "osdi",     "pages": 14},
+        {"name": "OSDI",       "format": "osdi",     "pages": 14},
+        {"name": "USENIX ATC", "format": "osdi",     "pages": 12},
+        {"name": "IEEE S&P",   "format": "neurips",  "pages": 13},
         # Networking
         {"name": "INFOCOM",    "format": "infocom",  "pages": 9},
     ]