[Bug] Image attachment causes unrecoverable "Could not process image" API 400 loop — context becomes unusable

Bug Description
When a PNG image is shared in the Claude Code session, the API returns a 400 error with "Could not process image". The image remains in the conversation context and every subsequent message, including slash commands like /resume, /compact, and /simplify also fails with the same error. The session becomes completely unusable without clearing context.

error output

``API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"Could not process image"},"request_id":"req_011Ca3JUpFsdmzTFbJsAZnQG"}``

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.104
• Feedback ID: 21006f47-3f30-4eb7-9dca-6091d8a46958

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/lchihana/.local/share/claude/versions/2.1.104 (expected in multi-process scenarios)\n    at Tc_ (/$bunfs/root/src/entrypoints/cli.js:2836:2153)\n    at Se6 (/$bunfs/root/src/entrypoints/cli.js:2836:1233)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T09:18:44.991Z"},{"error":"Error: 403 {\"type\":\"error\",\"error\":{\"type\":\"permission_error\",\"message\":\"OAuth authentication is currently not allowed for this organization.\"},\"request_id\":\"req_011Ca1XCoEfjUFZxKZPCArm7\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:53504)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4943)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T09:19:11.594Z"},{"error":"SyntaxError: JSON Parse error: Unexpected identifier \"Your\"\n    at <parse> (:0)\n    at parse (unknown)\n    at pb8 (/$bunfs/root/src/entrypoints/cli.js:164:10030)\n    at O (/$bunfs/root/src/entrypoints/cli.js:128:19312)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:166:1186)\n    at j5H (/$bunfs/root/src/entrypoints/cli.js:6107:466)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T09:19:11.594Z"},{"error":"Error: 403 {\"type\":\"error\",\"error\":{\"type\":\"permission_error\",\"message\":\"OAuth authentication is currently not allowed for this organization.\"},\"request_id\":\"req_011Ca1XCoNcC7VzydcqrnV3P\"}\n    at generate (/$bunfs/root/src/entrypoints/cli.js:11:53504)\n    at makeRequest (/$bunfs/root/src/entrypoints/cli.js:50:4943)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T09:19:11.685Z"},{"error":"AxiosError: Request failed with status code 429\n    at eg (/$bunfs/root/src/entrypoints/cli.js:108:1194)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:113:12750)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:865:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/src/entrypoints/cli.js:115:2467)\n    at async yCH (/$bunfs/root/src/entrypoints/cli.js:2909:15497)\n    at async <anonymous> (/$bunfs/root/src/entrypoints/cli.js:5338:16727)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T09:24:03.103Z"},{"error":"AxiosError: Request failed with status code 429\n    at eg (/$bunfs/root/src/entrypoints/cli.js:108:1194)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:113:12750)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:865:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/src/entrypoints/cli.js:115:2467)\n    at async yCH (/$bunfs/root/src/entrypoints/cli.js:2909:15497)\n    at async <anonymous> (/$bunfs/root/src/entrypoints/cli.js:5338:16727)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T09:24:11.614Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:113:13352)\n    at emit (node:events:92:22)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:112:3321)\n    at request (/$bunfs/root/src/entrypoints/cli.js:115:2467)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T09:43:34.859Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:113:13352)\n    at emit (node:events:92:22)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:112:3321)\n    at request (/$bunfs/root/src/entrypoints/cli.js:115:2467)\n    at async KE6 (/$bunfs/root/src/entrypoints/cli.js:435:3803)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T10:24:08.034Z"},{"error":"Error: Stream idle timeout - partial response received\n    at _p7 (/$bunfs/root/src/entrypoints/cli.js:7923:10845)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T11:02:40.714Z"},{"error":"AxiosError: timeout of 5000ms exceeded\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:113:13352)\n    at emit (node:events:92:22)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:112:3321)\n    at request (/$bunfs/root/src/entrypoints/cli.js:115:2467)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-13T11:02:45.701Z"},{"error":…

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