chore(sdk): drop variable-sized payloads from info logs

Strip full state/agent model dumps and tool / skill / MCP-server name
lists out of info logs. The accompanying counts are still logged so
'how many X were loaded' remains visible without dumping the contents.

- conversation/state: 'Resumed conversation <id>' and 'Created new
  conversation <id>' no longer append `state.model_dump(...)` and
  `agent.model_dump_succint()` — those dump the entire ConversationState
  (including workspace, persistence info, etc.) and the agent config
  across many wrapped log lines on startup.
- mcp/utils: 'Created N MCP tools' no longer enumerates every tool name.
- agent/base: 'Loaded N tools from spec' / 'Filtered to N tools after
  applying regex filter' no longer enumerate every tool name.
- skills/skill: 'Loaded N public skills' no longer enumerates every
  skill name.
- plugin/plugin: 'Loaded MCP config from <path> with N server(s)' no
  longer enumerates every server name.

Co-authored-by: openhands <openhands@all-hands.dev>

Author: openhands-agent

openhands-sdk/openhands/sdk/agent/base.py

@@ -473,16 +473,11 @@ def _initialize(self, state: ConversationState):
                 result = future.result()
                 tools.extend(result)
 
-        logger.info(
-            f"Loaded {len(tools)} tools from spec: {[tool.name for tool in tools]}"
-        )
+        logger.info("Loaded %d tools from spec", len(tools))
         if self.filter_tools_regex:
             pattern = re.compile(self.filter_tools_regex)
             tools = [tool for tool in tools if pattern.match(tool.name)]
-            logger.info(
-                f"Filtered to {len(tools)} tools after applying regex filter: "
-                f"{[tool.name for tool in tools]}",
-            )
+            logger.info("Filtered to %d tools after applying regex filter", len(tools))
 
         # Include default tools from include_default_tools; not subject to regex
         # filtering. Use explicit mapping to resolve tool class names.

openhands-sdk/openhands/sdk/conversation/state.py

@@ -365,11 +365,7 @@ def create(
             # Note: stats are already deserialized from base_state.json above.
             # Do NOT reset stats here - this would lose accumulated metrics.
 
-            logger.info(
-                f"Resumed conversation {state.id} from persistent storage.\n"
-                f"State: {state.model_dump(exclude={'agent'})}\n"
-                f"Agent: {state.agent.model_dump_succint()}"
-            )
+            logger.info("Resumed conversation %s from persistent storage", state.id)
             return state
 
         # ---- Fresh path ----
@@ -394,11 +390,7 @@ def create(
 
         state._save_base_state(file_store)  # initial snapshot
         state._autosave_enabled = True
-        logger.info(
-            f"Created new conversation {state.id}\n"
-            f"State: {state.model_dump(exclude={'agent'})}\n"
-            f"Agent: {state.agent.model_dump_succint()}"
-        )
+        logger.info("Created new conversation %s", state.id)
         return state
 
     # ===== Auto-persist base on public field changes =====

openhands-sdk/openhands/sdk/mcp/utils.py

@@ -87,5 +87,5 @@ def create_mcp_tools(
             )
         raise
 
-    logger.info(f"Created {len(client.tools)} MCP tools: {[t.name for t in client]}")
+    logger.info("Created %d MCP tools", len(client.tools))
     return client

openhands-sdk/openhands/sdk/plugin/plugin.py

@@ -477,10 +477,10 @@ def _load_mcp_config(plugin_dir: Path) -> dict[str, Any] | None:
         # expansion with per-conversation secrets. Only SKILL_ROOT is expanded now.
         config = load_mcp_config(mcp_json, skill_root=plugin_dir, expand_defaults=False)
         if config and "mcpServers" in config:
-            server_names = list(config["mcpServers"].keys())
             logger.info(
-                f"Loaded MCP config from {mcp_json} "
-                f"with {len(server_names)} server(s): {server_names}"
+                "Loaded MCP config from %s with %d server(s)",
+                mcp_json,
+                len(config["mcpServers"]),
             )
         return config
     except Exception as e:

openhands-sdk/openhands/sdk/skills/skill.py

@@ -1105,9 +1105,7 @@ def load_public_skills(
     except Exception as e:
         logger.warning(f"Failed to load public skills from {repo_url}: {str(e)}")
 
-    logger.info(
-        f"Loaded {len(all_skills)} public skills: {[s.name for s in all_skills]}"
-    )
+    logger.info("Loaded %d public skills", len(all_skills))
     return all_skills