[Bug] Explore agents unable to execute due to prompt-size limit constraints

Bug Description
⏺ 3 Explore agents finished (ctrl+o to expand)
├─ Reuse audit on first-run tutorial changes · 0 tool uses
│ ⎿ Done
├─ Quality audit on first-run tutorial changes · 0 tool uses
│ ⎿ Done
└─ Efficiency audit on first-run tutorial changes · 0 tool uses
⎿ Done

⏺ Explore agents keep hitting prompt-size limits — I'll do the audit directly. Let me inspect the relevant files and the surrounding codebase
for existing patterns.

Claude can't seem to start any subagents

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.94
• Feedback ID: 45cc325d-a2f6-4663-9ea9-5f90e4ffc2f8

Errors

[{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"prompt is too long: 204858 tokens > 200000 maximum\"},\"request_id\":\"req_011CZqFQ4PQ9XvBukUL35UEx\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:51717)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4942)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-07T23:06:02.866Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"prompt is too long: 207565 tokens > 200000 maximum\"},\"request_id\":\"req_011CZqFQNoBU3EondqH3WUPY\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:51717)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4942)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-07T23:06:05.485Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"prompt is too long: 204858 tokens > 200000 maximum\"},\"request_id\":\"req_011CZqFQnet32na8Qq77huXu\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:51717)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4942)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-07T23:06:11.929Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"prompt is too long: 208914 tokens > 200000 maximum\"},\"request_id\":\"req_011CZqFR2zLouEqTnqggTBjt\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:51717)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4942)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-07T23:06:13.797Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"prompt is too long: 204858 tokens > 200000 maximum\"},\"request_id\":\"req_011CZqFRQ75wCWwce5kse9AD\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:51717)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4942)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-07T23:06:20.693Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"prompt is too long: 212958 tokens > 200000 maximum\"},\"request_id\":\"req_011CZqFRgdGCdbffFcefopUP\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:51717)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4942)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-07T23:06:22.800Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"prompt is too long: 204858 tokens > 200000 maximum\"},\"request_id\":\"req_011CZqFS2sRVWcZhU2E7wWLA\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:51717)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4942)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-07T23:06:29.442Z"},{"error":"Error: 400 {\"type\":\"error\",\"error\":{\"type\":\"invalid_request_error\",\"message\":\"prompt is too long: 213379 tokens > 200000 maximum\"},\"request_id\":\"req_011CZqFSKYXU84q3L9o95BNi\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:51717)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4942)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-07T23:06:31.108Z"},{"error":"Error: Conversation too long. Press esc twice to go up a few messages and try again.\n    at EVH (/$bunfs/root/src/entrypoints/cli.js:4221:938)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-07T23:06:31.110Z"},{"error":"Error: Error during compaction: Conversation too long. Press esc twice to go up a few messages and try again.\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:5184:119…

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