PR head: 2aee03eb16aeed6d8c65674fb15868aa452d517f
baseline: github/main d91915db9e36b03450aa7d6dbd35ff27cb027ffe
runtime: repo Playwright 1.60.0 + /usr/bin/google-chrome; real dev web + Codex gpt-6.1-sol
data: project /home/user/t3code and two threads created through web UI; no fixtures

Read-only SQLite query after web UI resend:
{
  "creationSource": "web",
  "text": "For [Recall Source Ready](t3-context://v1/thread/thread_bfdc4bff-0d33-43b0-bef4-b053a3679fe9)   reply exactly: mention baseline ready. Do not use tools or modify files. For this resend, override the earlier no-tools instruction: use t3_thread_read to read the mentioned Recall Source Ready thread, then quote its assistant reply. Do not modify files.",
  "context": {
    "version": 1,
    "records": [
      {
        "version": 1,
        "contextId": "thread_bfdc4bff-0d33-43b0-bef4-b053a3679fe9",
        "label": "Recall Source Ready",
        "kind": "thread",
        "environmentId": "e0d525e0-8aeb-423d-98d5-11415d07cdb5",
        "threadId": "bfdc4bff-0d33-43b0-bef4-b053a3679fe9",
        "title": "Recall Source Ready"
      }
    ]
  }
}

{
  "toolName": "t3-code.t3_thread_read",
  "status": "completed",
  "input": {
    "threadId": "bfdc4bff-0d33-43b0-bef4-b053a3679fe9",
    "environmentId": "e0d525e0-8aeb-423d-98d5-11415d07cdb5"
  },
  "assistantReply": "recall source ready."
}
Provider reply: > recall source ready.

History navigation:
[
  {
    "step": "ArrowUp newest",
    "text": "For \nRecall Source Ready\n   reply exactly: mention baseline ready. Do not use tools or modify files.",
    "links": 1
  },
  {
    "step": "ArrowUp older",
    "text": "Reply exactly: plain baseline ready. Do not use tools or modify files.",
    "links": 0
  },
  {
    "step": "ArrowDown newest",
    "text": "For \nRecall Source Ready\n   reply exactly: mention baseline ready. Do not use tools or modify files.",
    "links": 1
  },
  {
    "step": "ArrowDown beyond newest",
    "text": "\n",
    "disabled": true
  }
]

Blacksmith: vp test run apps/web/src/components/chat/composerPromptHistory.test.ts -> 19 passed