fix(snmp): ship MIB parser binary in API container with pre-loaded MIBs

- Build tod-mib-parser in both poller and API Dockerfiles
- Bundle 16 standard MIBs (IF-MIB, HOST-RESOURCES, SNMPv2, etc.)
- Pass --search-path /app/mibs to parser so dependencies resolve
- Users no longer need to upload standard MIBs manually

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

backend/app/routers/snmp_profiles.py

@@ -367,7 +367,7 @@ async def parse_mib(
         # Call the MIB parser binary
         try:
             result = subprocess.run(
-                [MIB_PARSER_BINARY, tmp_path],
+                [MIB_PARSER_BINARY, tmp_path, "--search-path", "/app/mibs"],
                 capture_output=True,
                 text=True,
                 timeout=30,