diff --git a/src/cli/index-terminal-list-host-scope.test.ts b/src/cli/index-terminal-list-host-scope.test.ts
index e442ab11ab2..b38cd71451f 100644
--- a/src/cli/index-terminal-list-host-scope.test.ts
+++ b/src/cli/index-terminal-list-host-scope.test.ts
@@ -122,7 +122,7 @@ describe('orca terminal list host scope', () => {
     await main(['terminal', 'list'], '/tmp/repo')
 
     const printed = String(logSpy.mock.calls[0]?.[0])
-    expect(printed).toContain('scope: unknown')
+    expect(printed).toContain('scope: unverifiable')
     expect(printed).not.toContain('scope: local')
   })
 })
diff --git a/src/cli/terminal-format.ts b/src/cli/terminal-format.ts
index 4f136e96c65..a4df4ba6951 100644
--- a/src/cli/terminal-format.ts
+++ b/src/cli/terminal-format.ts
@@ -24,7 +24,7 @@ export function formatTerminalList(result: RuntimeTerminalListResult): string {
   const body = result.terminals
     .map(
       (terminal) =>
-        `${terminal.handle}  ${terminal.title ?? '(untitled)'}  ${terminal.connected ? 'connected' : 'disconnected'}  host=${terminal.executionHostId ?? 'unknown'}  ${terminal.worktreePath}\n${terminal.preview ? `preview: ${terminal.preview}` : 'preview: <empty>'}`
+        `${terminal.handle}  ${terminal.title ?? '(untitled)'}  ${terminal.connected ? 'connected' : 'disconnected'}  host=${terminal.executionHostId ?? 'unverifiable'}  ${terminal.worktreePath}\n${terminal.preview ? `preview: ${terminal.preview}` : 'preview: <empty>'}`
     )
     .join('\n\n')
   const visualLayout = formatTerminalVisualLayouts(result.visualLayouts)
@@ -39,7 +39,7 @@ export function formatTerminalList(result: RuntimeTerminalListResult): string {
 // absent scope means the host is too old to know — not that it covered everything.
 function formatTerminalListHostScope(scope: RuntimeTerminalListHostScope | undefined): string {
   if (!scope) {
-    return 'scope: unknown — this host does not report which hosts it lists'
+    return 'scope: unverifiable — this host does not report which hosts it lists'
   }
   const covered = scope.hostIds.length > 0 ? scope.hostIds.join(', ') : 'none'
   const omitted =
diff --git a/src/cli/terminal-list-host-scope-format.test.ts b/src/cli/terminal-list-host-scope-format.test.ts
index 30a7564a69b..dc3b72c44cf 100644
--- a/src/cli/terminal-list-host-scope-format.test.ts
+++ b/src/cli/terminal-list-host-scope-format.test.ts
@@ -36,7 +36,7 @@ describe('formatTerminalList host identity', () => {
   it('prints unknown, not local, for a row whose host the runtime could not name', () => {
     const output = formatTerminalList(listResult({ terminals: [terminal()] }))
 
-    expect(output).toContain('host=unknown')
+    expect(output).toContain('host=unverifiable')
     expect(output).not.toContain('host=local')
   })
 })
@@ -70,7 +70,7 @@ describe('formatTerminalList scope declaration', () => {
   it('says the scope is unknown when the host predates the field', () => {
     const output = formatTerminalList(listResult())
 
-    expect(output).toContain('scope: unknown')
+    expect(output).toContain('scope: unverifiable')
     expect(output).not.toContain('scope: local')
   })
 })
diff --git a/src/main/runtime/terminal-list-execution-host-scope.test.ts b/src/main/runtime/terminal-list-execution-host-scope.test.ts
index 10bdc84c21c..11df97a3bb8 100644
--- a/src/main/runtime/terminal-list-execution-host-scope.test.ts
+++ b/src/main/runtime/terminal-list-execution-host-scope.test.ts
@@ -140,6 +140,19 @@ describe('listTerminals execution-host identity', () => {
 
     expect(terminals[0]?.executionHostId).toBeUndefined()
   })
+
+  it.each(['remote:env@@%E0%A4%A', 'ssh:%E0%A4%A@@pty-7'])(
+    'leaves the host unset for a malformed foreign PTY id: %s',
+    async (ptyId) => {
+      const runtime = makeRuntime([
+        { worktreeId: LOCAL_WORKTREE_ID, leafId: REMOTE_LEAF_ID, ptyId }
+      ])
+
+      const { terminals } = await runtime.listTerminals()
+
+      expect(terminals[0]?.executionHostId).toBeUndefined()
+    }
+  )
 })
 
 describe('listTerminals scope declaration', () => {
diff --git a/src/shared/runtime-types.ts b/src/shared/runtime-types.ts
index b66b117a556..945e3b76c7b 100644
--- a/src/shared/runtime-types.ts
+++ b/src/shared/runtime-types.ts
@@ -532,7 +532,7 @@ export type RuntimeTerminalListResult = {
   topologyRevisions?: Record<string, number>
   totalCount: number
   truncated: boolean
-  /** Absent from hosts that predate the field — treat that as unknown scope. */
+  /** Absent from hosts that predate the field — treat that scope as unverifiable. */
   hostScope?: RuntimeTerminalListHostScope
 }
 
diff --git a/src/shared/terminal-execution-host.ts b/src/shared/terminal-execution-host.ts
index 26686191ca3..d3e77a615af 100644
--- a/src/shared/terminal-execution-host.ts
+++ b/src/shared/terminal-execution-host.ts
@@ -24,5 +24,8 @@ export function getPtyExecutionHost(ptyId: string | null | undefined): PtyExecut
   if (remote) {
     return remote.environmentId ? toRuntimeExecutionHostId(remote.environmentId) : 'foreign'
   }
+  if (ptyId.startsWith('ssh:') || ptyId.startsWith('remote:')) {
+    return 'foreign'
+  }
   return null
 }