PR #13230 Linux ACP startup proof
Head: b2aaac5cbf6f8c8497c0bdaa2e2fd5a98120da79
Pinned ACP archive SHA256: 9fb60956af0a9d76220a4db91ca9ac88e2a2372ad68f985ab5fceace6b825b96

Before: direct at zero limit
{"rttime":"Max realtime timeout      0                    0                    us        ","seccomp":["NoNewPrivs:\t0","Seccomp:\t0"],"launcher":null,"command":"/tmp/agy130/agy_acp_server.par","case":["--direct"]}
{"code":null,"signal":"SIGKILL","initialized":false}

After: auto shim at zero limit
{"rttime":"Max realtime timeout      0                    0                    us        ","seccomp":["NoNewPrivs:\t0","Seccomp:\t0"],"launcher":"/usr/local/bin/python3","command":"/usr/local/bin/python3","case":[]}
{"initialize":{"protocolVersion":1,"agentCapabilities":{"loadSession":true,"promptCapabilities":{"image":true,"audio":true,"embeddedContext":true},"mcpCapabilities":{"http":true,"sse":true},"sessionCapabilities":{"list":{},"resume":{}},"auth":{"logout":{}}},"authMethods":[{"id":"oauth-personal","name":"Log in with Google","description":"Log in with your Google account"},{"id":"oauth-business","name":"Log in with Gemini Enterprise","description":"Log in with your Gemini Enterprise account"},{"id":"gemini-api-key","name":"Gemini API key","description":"Use an API key with Gemini Developer API"},{"id":"agent-platform","name":"Gemini Enterprise Agent Platform","description":"Use Gemini Enterprise Agent Platform (formerly Vertex AI) with Application Default Credentials or an API key"}],"agentInfo":{"name":"antigravity-acp","title":"Google Antigravity","version":"1.3.0"}}}
{"code":null,"signal":"SIGTERM","initialized":true}

Normal: unlimited direct
{"rttime":"Max realtime timeout      unlimited            unlimited            us        ","seccomp":["NoNewPrivs:\t0","Seccomp:\t0"],"launcher":null,"command":"/tmp/agy130/agy_acp_server.par","case":[]}
{"initialize":{"protocolVersion":1,"agentCapabilities":{"loadSession":true,"promptCapabilities":{"image":true,"audio":true,"embeddedContext":true},"mcpCapabilities":{"http":true,"sse":true},"sessionCapabilities":{"list":{},"resume":{}},"auth":{"logout":{}}},"authMethods":[{"id":"oauth-personal","name":"Log in with Google","description":"Log in with your Google account"},{"id":"oauth-business","name":"Log in with Gemini Enterprise","description":"Log in with your Gemini Enterprise account"},{"id":"gemini-api-key","name":"Gemini API key","description":"Use an API key with Gemini Developer API"},{"id":"agent-platform","name":"Gemini Enterprise Agent Platform","description":"Use Gemini Enterprise Agent Platform (formerly Vertex AI) with Application Default Credentials or an API key"}],"agentInfo":{"name":"antigravity-acp","title":"Google Antigravity","version":"1.3.0"}}}
{"code":null,"signal":"SIGTERM","initialized":true}

Existing filter: zero direct
{"rttime":"Max realtime timeout      0                    0                    us        ","seccomp":["NoNewPrivs:\t1","Seccomp:\t2"],"launcher":null,"command":"/tmp/agy130/agy_acp_server.par","case":[]}
{"initialize":{"protocolVersion":1,"agentCapabilities":{"loadSession":true,"promptCapabilities":{"image":true,"audio":true,"embeddedContext":true},"mcpCapabilities":{"http":true,"sse":true},"sessionCapabilities":{"list":{},"resume":{}},"auth":{"logout":{}}},"authMethods":[{"id":"oauth-personal","name":"Log in with Google","description":"Log in with your Google account"},{"id":"oauth-business","name":"Log in with Gemini Enterprise","description":"Log in with your Gemini Enterprise account"},{"id":"gemini-api-key","name":"Gemini API key","description":"Use an API key with Gemini Developer API"},{"id":"agent-platform","name":"Gemini Enterprise Agent Platform","description":"Use Gemini Enterprise Agent Platform (formerly Vertex AI) with Application Default Credentials or an API key"}],"agentInfo":{"name":"antigravity-acp","title":"Google Antigravity","version":"1.3.0"}}}
{"code":null,"signal":"SIGTERM","initialized":true}