fix(ai-vault): preserve resume env deletion through drag

src/renderer/src/components/right-sidebar/AiVaultSessionRow.tsx

@@ -100,6 +100,7 @@ export function VaultSessionRow({
         sessionFilePath: session.filePath,
         sessionExecutionHostId: session.executionHostId,
         ...(resumeStartup.env ? { env: resumeStartup.env } : {}),
+        ...(resumeStartup.envToDelete ? { envToDelete: resumeStartup.envToDelete } : {}),
         ...(resumeStartup.launchConfig ? { launchConfig: resumeStartup.launchConfig } : {})
       })
       window.dispatchEvent(new Event(AI_VAULT_SESSION_DRAG_START_EVENT))

src/renderer/src/components/tab-group/AiVaultSessionDropLayer.tsx

@@ -204,6 +204,7 @@ export default function AiVaultSessionDropLayer({
         worktreeId,
         command: payload.command,
         ...(payload.env ? { env: payload.env } : {}),
+        ...(payload.envToDelete ? { envToDelete: payload.envToDelete } : {}),
         ...(payload.launchConfig ? { launchConfig: payload.launchConfig } : {}),
         targetGroupId: dropTarget.groupId,
         splitDirection: dropTarget.zone === 'center' ? undefined : dropTarget.zone

src/renderer/src/lib/ai-vault-session-drag.test.ts

@@ -50,6 +50,7 @@ describe('Session History session drag data', () => {
       command: "cd '/repo' && claude --resume session-1",
       sessionFilePath: '/Users/ada/.claude/projects/-repo/session-1.jsonl',
       env: { ANTHROPIC_BASE_URL: 'https://claude.example.test' },
+      envToDelete: ['CODEX_HOME', 'ORCA_CODEX_HOME'],
       launchConfig: {
         agentCommand: 'claude --dangerously-skip-permissions',
         agentArgs: '--dangerously-skip-permissions',
@@ -110,6 +111,24 @@ describe('Session History session drag data', () => {
     expect(readAiVaultSessionDragData(transfer)).toBeNull()
   })
 
+  it('rejects malformed env deletion lists', () => {
+    const transfer = createTransfer()
+    transfer.setData(
+      AI_VAULT_SESSION_DRAG_TYPE,
+      JSON.stringify({
+        kind: 'ai-vault-session',
+        version: 1,
+        agent: 'codex',
+        sessionId: 'session-1',
+        title: 'Malformed env deletion',
+        command: 'codex resume session-1',
+        envToDelete: ['CODEX_HOME', '']
+      })
+    )
+
+    expect(readAiVaultSessionDragData(transfer)).toBeNull()
+  })
+
   it('rejects array-shaped launch config env records', () => {
     const transfer = createTransfer()
     transfer.setData(

src/renderer/src/lib/ai-vault-session-drag.ts

@@ -17,8 +17,9 @@ export type AiVaultSessionDragPayload = {
   // WSL) to reject SSH panes that cannot reach it.
   sessionFilePath?: string
   sessionExecutionHostId?: ExecutionHostId
-  // Why: drag/drop resume must preserve planned env/default args, not just the shell command.
+  // Why: drag/drop resume must preserve planned env mutations/default args, not just the command.
   env?: Record<string, string>
+  envToDelete?: string[]
   launchConfig?: SleepingAgentLaunchConfig
 }
 
@@ -44,6 +45,14 @@ function isStringRecord(value: unknown): value is Record<string, string> {
   return Object.values(value).every((entry) => typeof entry === 'string')
 }
 
+function isEnvDeletionList(value: unknown): value is string[] {
+  return (
+    Array.isArray(value) &&
+    value.length <= 32 &&
+    value.every((entry) => typeof entry === 'string' && entry.length > 0 && entry.length <= 256)
+  )
+}
+
 function isLaunchConfig(value: unknown): value is SleepingAgentLaunchConfig {
   if (!value || typeof value !== 'object') {
     return false
@@ -72,6 +81,7 @@ function isSerializedPayload(value: unknown): value is SerializedAiVaultSessionD
     (payload.sessionExecutionHostId === undefined ||
       Boolean(normalizeExecutionHostId(payload.sessionExecutionHostId))) &&
     (payload.env === undefined || isStringRecord(payload.env)) &&
+    (payload.envToDelete === undefined || isEnvDeletionList(payload.envToDelete)) &&
     (payload.launchConfig === undefined || isLaunchConfig(payload.launchConfig))
   )
 }
@@ -126,6 +136,7 @@ export function readAiVaultSessionDragData(
       sessionFilePath,
       sessionExecutionHostId,
       env,
+      envToDelete,
       launchConfig
     } = parsed
     return {
@@ -136,6 +147,7 @@ export function readAiVaultSessionDragData(
       ...(sessionFilePath ? { sessionFilePath } : {}),
       ...(sessionExecutionHostId ? { sessionExecutionHostId } : {}),
       ...(env ? { env } : {}),
+      ...(envToDelete ? { envToDelete } : {}),
       ...(launchConfig ? { launchConfig } : {})
     }
   } catch {