Session 2026-09-12 21:30 → 2026-09-14 01:45 PT · M2, Fable 5.1 orchestrating 15 Opus/Sonnet subagents · pack written 2026-09-14
Subagents now get the Fable mindset automatically, and with the v2 block both Opus and Sonnet close more than the 60–70% target on the reasoning habits that define the gap.
Your /goal: spin up subagents with the Fable mindset so they close 60–70%+ of the Opus/Sonnet gap to Fable, by building Nick Saraev’s animated-video workflow (video 2026-09-11) with Opus, Codex where useful, and a clean carryover into computer-use.
Why it was broken: SessionStart hooks never run inside subagents, so the mindset gate installed on 09-11 reached none of them (marker test: PREAMBLE=no). The fix is the Agent PreToolUse hook, which rewrites the prompt and sees the per-call model. The first block pointed at the full manual and 0 of 8 Sonnet agents followed the pointer; v2 inlines the loop and names the two measured habits. v2 is now the default for every non-Fable family.
| Model, block | n | reason / plan first / re-evaluate | gap closed |
|---|---|---|---|
| Sonnet, v1 pointer | 4 tr, 83 beats | 67 / 70 / 67% | −18% |
| Sonnet, v2 inlined | 3 tr, 68 beats | 91 / 91 / 91% | +76% |
| Opus, v1 builders | 3 tr, 96 beats | 93 / 94 / 95% | +135% |
| Opus, v1 one 108-call fix pass | 1 tr, 54 beats | 74 / 75 / 75% | −75% |
| Opus, v2 | 4 tr, 107 beats | 95 / 96 / 98% | +122% |
| Untreated control | Sonnet 205, Opus 102 tr | S 70/75/69 · O 85/86/88% | baseline |
| Fable 5.1 ceiling | 51 sessions | 91 / 96 / 93% | 100% |
gap closed = (treated − control) / (Fable − control), rows from extract-mindset’s analyzer. Observational: treated and control differ in task; small n on the treated side. The one Opus run that went past its context window fell below control, so re-injecting after compaction is the next lever for long runs.
Codex’s overnight read-only review (02:37) returned REVISE: a saved quote of 0 bypasses --go even on a paid provider, a malformed spends_credits value reads as free, and the style-still API call is ungated. No credentials exist on any box, so nothing can spend today. Three small edits plus negative controls; then Codex re-review.
comms/outputs/2026-09-12-animate-pipeline/review/codex-review.log
Mini timed out on the tailnet and refused the key via Nano. Tarball waits at /tmp/claude-502/animate-sync.tgz on M2; re-run the tar-over-ssh when Mini is back.
Files are on Nano by hash. The hook itself needs Nano’s claude-file-guard to whitelist ops/reference/mindset-toggle.conf, then copy ~/.claude/hooks/pre-tool-use-agent.py.
Needs an account and a credits GO. The public API (50 paths) has no Genjutsu or Wan-animate endpoint, so the transfer step is the web UI (computer-use profile, unverified) or the Codex desktop plugin the video uses.
If long subagent runs matter, add a PostCompact re-injection of the block. Not built; flagged from the 108-call data point.
The video’s workflow: recording → face still → style still (image model) → 20 s chunks → per-chunk video style transfer (Genjutsu / Wan 3.0 / self-hosted Wan 2.2 Animate) → inspect joins, retry failed gens → stitch with the original audio → silence cut (0.5 s) → frame-rate stall → export. The agent is the production manager: one batch of questions, credits quoted before spending.
animate.py plan|run|inspect|finish|status, chunk.sh, stitch.sh, silence_cut.py, stall.sh, inspect_joins.sh, manifest.py; providers mock (offline, proven), higgsfield_api (style still only), higgsfield_web (task cards for a UI driver), codex_plugin; wan_local.md (Nano feasibility, no invented numbers); SKILL.md + 6 references. Three suites 22/14/26 checks passing, re-run by the orchestrator.higgsfield-genjutsu-web.md and codex-higgsfield-plugin.md (UNVERIFIED until a real drive), references/PATTERN-auto-editing-loop.md, table rows and pointer in SKILL.md.~/.claude/hooks/pre-tool-use-agent.py injects the block per family from ops/reference/mindset-toggle.conf; log ~/.claude/logs/subagent-mindset.jsonl; measurer measure/measure-gap.py with cached control and ceiling counters.| Pass | Result |
|---|---|
| Probe (Sonnet) mechanical sweep | 7/7 clean: syntax, fresh suites, manifest handoff, no secrets, no undocumented endpoints |
| Sol (Opus) adversarial review | REVISE: 2 blockers (unpolled jobs on the web/Codex rails; handshake schema mismatch) + 10 more. All 13 fixed and re-proven in one Opus pass. |
| Three treated Sonnet test agents | Found 2 real defects: chunk.sh dropped 300 of 900 frames on a VFR source with exit 0; stitch.sh shipped two resolutions in one file. Both fixed; 5-minute scaling run 15 chunks, zero drift, 62 s (46 s after the fix). |
| Post-fix Opus v2 verification | Confirmed fixes; found 2 residuals (re-encode stitch lost 1 frame, then 478 after a filter re-init at the resolution change; chunk guard tautological). Fixed by the orchestrator: 960/960 frames verified, guard now compares against true source frames. |
| Codex (GPT) read-only review, 02:37 | REVISE: 1 blocker (money gate, above), risks on retrieval-failure resubmission, replanning reusing stale media, VFR guard overclaiming, clip-limit wording, quote rounding, join heuristic, manual-rail fixtures. 5 of Sol’s items confirmed FIXED, 5 PARTIAL. |
| Evals gate | PASS 11/12 (sean-time 1: the open items above) |
comms/outputs/2026-09-12-animate-pipeline/README.md (index)
comms/outputs/2026-09-12-animate-pipeline/measure/GAP-CLOSURE-final.md
comms/outputs/2026-09-12-animate-pipeline/hooks/README.md (mechanism + how to change it)
comms/outputs/2026-09-12-animate-pipeline/review/{SOL-REVIEW.md, codex-review.log}
comms/active-tasks/20260913T053801Z__animate-pipeline-mindset-subagents.md
memory: project_subagent_mindset_injection.md
Nothing spent, no network calls to any provider, no sends. Synced to Nano by hash; Mini pending.