docs(diagnostics): R29 PAD mood-dynamics probe — 3-baseline series + step-response + findings

Live re-run of the PAD-dynamics probe for brokkr-smithy R29 (the original
per-turn series was never persisted). Captures, durably:

- 3-baseline arc (lofn/mimir/forseti) — decay anchor is neutral (0,0,0), not
  the trait set-point (all three converge to 0 proportional to distance).
- Positive/negative step-response (lofn) — geometric decay ~0.90 retention/turn,
  ~2-turn appraisal latency, ceiling-driven hedonic asymmetry.
- Findings: over-regulation is at the emotion->PAD gain, not appraisal; OCC
  emissions observable via emotions_active on base agents.

Methodology note: mask-hosted transient characters have a static mood engine;
base persona agents run appraisal->PAD. relations[] is provider-only per
Worldtree ADR-0009.

docs/diagnostics/r29-pad-step-neg-lofn.csv

@@ -0,0 +1,13 @@
+drive,sent,reflects_after,P,A,D,emotions
+1,impulse_neg,baseline,0.809,-0.153,0.248,
+2,neutral_1,impulse_neg,0.809,-0.153,0.248,love=0.867
+3,neutral_2,neutral_1,0.7686,-0.1453,0.2356,love=0.851
+4,neutral_3,neutral_2,0.6126,-0.1015,0.2136,love=0.82; disgust=0.867
+5,neutral_4,neutral_3,0.5529,-0.0916,0.1927,love=0.795; disgust=0.841
+6,neutral_5,neutral_4,0.499,-0.0826,0.174,love=0.766; disgust=0.81
+7,neutral_6,neutral_5,0.4278,-0.0709,0.1491,love=0.737; disgust=0.78
+8,neutral_7,neutral_6,0.3861,-0.064,0.1346,love=0.715; disgust=0.756
+9,neutral_8,neutral_7,0.3485,-0.0577,0.1215,love=0.691; disgust=0.731
+10,neutral_9,neutral_8,0.3514,-0.0336,0.1189,love=0.649; disgust=0.686; joy=0.608
+11,neutral_10,neutral_9,0.3172,-0.0303,0.1073,love=0.62; disgust=0.656; joy=0.581
+12,settle_probe,neutral_10,0.3172,-0.0303,0.1073,love=0.603; disgust=0.638; joy=0.566