Claude Code repeats planning steps after the plan approval when running ![shell command] when planning is on and then asking for plan

Bug Description
Claude Code repeats planning steps after the plan approval

ENV:

• macOS 15.5 (24F74), Darwin x64
• Nushell 0.105.1
• Zellij 0.42.2
• Zed 0.196.5 (alacritty)

STEPS TO REPRODUCE:

1. Enable planning mode
2. Run a shell command: ![shell command]
3. Use a slash command with $ARGUMENTS followed by a copied text
4. Allow subagents to investigate and generate a plan
5. Approve the generated plan

EXPECTED BEHAVIOUR:

Main agent starts executing tasks as planned.

ACTUAL BEHAVIOUR:

Claude Code dispatches multiple subagents to re-investigate the codebase after the plan has already been approved, duplicating the initial planning steps.

IMPACT

• Excessive token usage due to duplicated subagent invocations
• Potential context drift, which may prevent the system from continuing execution as originally planned

Environment Info

• Platform: darwin
• Terminal: zed
• Version: 1.0.57
• Feedback ID: 8491ccae-68e1-49e9-b468-32075db65981

Errors

[{"error":"Error: Command failed: security find-generic-password -a $USER -w -s \"Claude Code\"\nsecurity: SecKeychainSearchCopyNext: The specified item could not be found in the keychain.\n\n    at genericNodeError (node:child_process:948:22)\n    at checkExecSyncError (node:child_process:451:27)\n    at execSync (node:child_process:278:31)\n    at B8 (/$bunfs/root/claude:684:5841)\n    at <anonymous> (/$bunfs/root/claude:580:5728)\n    at W (/$bunfs/root/claude:435:14413)\n    at y3 (/$bunfs/root/claude:580:3475)\n    at hK (/$bunfs/root/claude:580:2341)\n    at J2 (/$bunfs/root/claude:580:8263)\n    at uHZ (/$bunfs/root/claude:580:8421)","timestamp":"2025-07-22T20:54:36.567Z"},{"error":"Error: ENOENT: no such file or directory, open '/proc/version'\n    at readFileSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:470:8329)\n    at W (/$bunfs/root/claude:435:14413)\n    at QuW (/$bunfs/root/claude:596:10205)\n    at processTicksAndRejections (native:7:39)\n    at spawnSync (unknown)\n    at spawnSync (node:child_process:226:22)\n    at execSync (node:child_process:275:109)\n    at Z (/$bunfs/root/claude:684:198)\n    at uuW (/$bunfs/root/claude:684:376)","timestamp":"2025-07-22T20:54:37.310Z"},{"error":"Error: Request was aborted.\n    at new f2 (unknown:1:28)\n    at new hB (/$bunfs/root/claude:1148:5965)\n    at new c4 (/$bunfs/root/claude:1148:6744)\n    at _createMessage (/$bunfs/root/claude:1156:7954)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-07-22T21:34:36.770Z"},{"error":"Error: Request was aborted.\n    at new f2 (unknown:1:28)\n    at new hB (/$bunfs/root/claude:1148:5965)\n    at new c4 (/$bunfs/root/claude:1148:6744)\n    at _createMessage (/$bunfs/root/claude:1156:7954)\n    at processTicksAndRejections (native:7:39)","timestamp":"2025-07-22T21:35:30.620Z"}]