Muse Spark 1.3: resuming a session after idle fails with reasoning encrypted_content not issued to this caller

Description

Resuming an old session on opencode/muse-spark-1.3-contributor-free fails immediately with:

Error from provider (Console): Upstream request failed: [invalid_request_error] reasoning `encrypted_content` was not issued to this caller

A new session with the same model works. Continuing a session after idle, or after using another model then switching back to Muse 1.3, always fails until /new.

OpenCode stores metadata.openai.reasoningEncryptedContent + itemId on reasoning parts and replays them. Those blobs are bound to the Zen/Console caller and expire. HTTP 400 is treated as fatal, so the session stays bricked.

Related: #48741 (image/tool call), #48805 (mid-session model switch). This report is specifically resume-after-idle on 1.18.30.

Plugins

opencode-pty, opencode-websearch-cited@1.2.0

OpenCode version

1.18.30

Steps to reproduce

1. Start a session with opencode/muse-spark-1.3-contributor-free and send a few messages (or mix in another model, then switch back).
2. Leave the session idle for a while, or fully restart OpenCode.
3. Reopen that same session and send another message with Muse 1.3.

Expected: request succeeds, history stays.
Actual: every retry returns the encrypted_content caller error.

Log:

timestamp=2026-09-14T03:07:17.902Z level=ERROR message="stream error" providerID=opencode modelID=muse-spark-1.3-contributor-free session.id=ses_f6b39b16bffeVTjvIwrR2SLez7 error.error="AI_APICallError: Error from provider (Console): Upstream request failed: [invalid_request_error] reasoning `encrypted_content` was not issued to this caller"

Stored part shape (reasoning, part table):

{
  "type": "reasoning",
  "text": "...",
  "metadata": {
    "openai": {
      "itemId": "rs_...",
      "reasoningEncryptedContent": "..."
    }
  }
}

Please drop reasoningEncryptedContent / reasoning itemId when the provider rejects them, persist the cleaned parts, and retry. Same class of recovery as the Claude stale-thinking handling.

Screenshot and/or share link

N/A. Error is from the Console provider before any stream output.

Operating System

macOS (darwin arm64)

Terminal

OpenCode TUI