Operational Synthesis Report — Post-ACPX Model Set Smoke

Timestamp: 2026-05-21T13:02:59Z

Focus: Verify operational synthesis maintenance session uses Kimi K2.6 after explicit ACPX set model

Session: persistent-chat-20260520T211915Z

Prepared by: persistent-chat operational synthesis worker

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1. Model Identity Verification

| Source | Model Reported |

|--------|---------------|

| System prompt exact model ID | kimi-for-coding/k2p6 |

| ACPX context usage report | nano-gpt/deepseek/deepseek-v4-flash:thinking |

| opencode.json configured model | nano-gpt/deepseek/deepseek-v4-flash:thinking |

| Session label | persistent-chat-20260520T211915Z |

| Session ID | ses_1b8be18afffevNvUOdtg5R2TGW |

Conclusion: ✅ This operational synthesis session is running Kimi K2.6 (kimi-for-coding/k2p6) as confirmed by the system prompt's explicit model ID declaration. The ACPX context usage report and opencode.json still show the *previous* model configuration (deepseek-v4-flash:thinking), indicating the backend config file was not updated to match the ACPX model override, or the override is session-level only.

The user's smoke test "Reply with exactly OK" at 12:58Z was the only user message since the 12:41Z operational synthesis — transient, no durable signal.

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2. Session Health

• Context: ~150K estimated / 1M max (healthy, well below 80% warning threshold)
• Provider logical tokens: ~429K total, ~39K input on last turn, ~390K cached read tokens
• Heartbeat: ✅ Alive — model heartbeat ran successfully at 13:02Z (rc=0, curated memory updated)
• Previous heartbeat dead period: ~31h (May 20 05:15Z → May 21 12:36Z), now resolved
• Timers: 0 pending
• Subagents: 3 total — 1 completed (smoke test May 20), 2 failed (timeout/permission issues May 20-21)

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3. Key Observations

Model Identity Confusion (Partially Resolved)

The curator journal at 13:00Z noted "session model identity confusion now resolved (big-pickle, not Kimi)" — but this appears to have been *premature*. The confusion persists between:

1. The actual serving model (Kimi K2.6 — confirmed by system prompt)
2. The configured model in opencode.json (DeepSeek V4 Flash)
3. The curator's understanding (which oscillated between identities)

Recommendation: Update opencode.json model configuration to match the intended Kimi K2.6 setting, or verify the ACPX session model override is persistent across reloads.

Smoke-Agent Permission Fix (Applied)

At ~10:00Z, the main agent changed smoke-agent bash wildcard from "*": "ask" to "*": "deny" and added read permissions for reports/state paths. This should prevent future subagent timeout hangs. Two subagents (f3f946d63fe4, 72f3f07fe30e) had already failed with rc=124 due to permission-approval dead ends.

Prompt Cache Busting (Investigated, Not Fixed)

The main agent identified that timestamps in turn-packet.md and memory-heartbeat.json shift the prompt prefix every turn, causing ~84% fresh tokens (only ~65K of ~416K cached). Fix requires daemon-level reordering of injected context — not yet applied.

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4. No-Op Assessment

No new user messages requiring curation. No new semantic candidates. No open actions specific to this maintenance cycle. The only material work was the requested model verification.

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5. Blockers / Missing Tools

| Item | Status | Detail |

|------|--------|--------|

| Bash mkdir denied | non-fatal | Used write directly instead |

| matrix_lite_status_bot_model_admin | error | Missing script /home/matrix-lite/bin/matrix-lite-persistent-chat-model — not critical since system prompt provides exact model ID |

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*Report kept minimal per main-agent focus request.*