Describe memory-pressure hibernation the way it works

Packages/macOS/CmuxFoundation/Sources/CmuxFoundation/ConfigValidation/CmuxConfigSchema.generated.swift

@@ -839,13 +839,13 @@ enum CmuxEmbeddedConfigSchema {
           "type": "object",
           "additionalProperties": false,
           "descriptionKey": "schemaDescriptions.terminal.agentHibernation",
-          "description": "Routine Agent Hibernation settings. cmux kills idle background agent processes to free RAM and CPU, then resumes them with their saved session when their tab is visited. Routine hibernation requires a restorable coding agent whose lifecycle reports idle, an off-screen terminal, a live-terminal count above the configured limit, and unchanged output through the idle and confirmation windows. Independently, during critical memory pressure cmux may hibernate a bounded batch of safe idle background agents even when enabled is false; visible, running, needs-input, recently changed, and unprotectable agents remain excluded. The placeholder Resume button is a manual fallback.",
+          "description": "Routine Agent Hibernation settings. cmux kills idle background agent processes to free RAM and CPU, then resumes them with their saved session when their tab is visited. Routine hibernation requires a restorable coding agent whose lifecycle reports idle, an off-screen terminal, a live-terminal count above the configured limit, and unchanged output through the idle and confirmation windows. Independently, under memory pressure (critical pressure from macOS or from the cmux app's own footprint, or cmux's total memory use past its aggregate warning threshold) cmux may hibernate every safe idle background agent even when enabled is false; visible, running, needs-input, recently changed, and unprotectable agents remain excluded. The placeholder Resume button is a manual fallback.",
           "properties": {
             "enabled": {
               "type": "boolean",
               "default": false,
               "descriptionKey": "schemaDescriptions.terminal.agentHibernationEnabled",
-              "description": "Enable routine Agent Hibernation based on the live-terminal limit. Critical-pressure safety hibernation remains active when false."
+              "description": "Enable routine Agent Hibernation based on the live-terminal limit. Memory-pressure safety hibernation remains active when false."
             },
             "idleSeconds": {
               "type": "integer",

Packages/macOS/CmuxSettingsUI/Sources/CmuxSettingsUI/Sections/TerminalSection.swift

@@ -501,7 +501,7 @@ public struct TerminalSection: View {
             SettingsCardRow(
                 configurationReview: .json("terminal.agentHibernation.enabled"),
                 String(localized: "settings.terminal.agentHibernation", defaultValue: "Agent Hibernation"),
-                subtitle: String(localized: "settings.terminal.agentHibernation.subtitle", defaultValue: "Hibernates idle background agent terminals above the live terminal limit. Even when this is off, cmux may hibernate them under critical memory pressure.")
+                subtitle: String(localized: "settings.terminal.agentHibernation.subtitle", defaultValue: "Hibernates idle background agent terminals above the live terminal limit. Even when this is off, cmux may hibernate them under memory pressure.")
             ) {
                 Toggle("", isOn: Binding(get: { hibernation.current }, set: { hibernation.set($0) }))
                     .labelsHidden()