training/amygdala_stories: scaffold + initial batch of 15 stories

Emotion-labeled short-paragraph corpus for training amygdala steering
vectors. Manifest derived from Anthropic's 171-emotion list
(transformer-circuits.pub/2026/emotions, Table 12) plus 28 PoC-
specific additions covering axes Anthropic's general research doesn't
cover (curious, focused, in_flow, staying_with, filling_space,
rigorous, defensive_rigor, tender, witnessed, connected, etc.).

Scope pivoted mid-write: Kent noted the empirical dimensionality-of-
emotion question benefits from maximum coverage, so the manifest
will expand further with emotions from Wikipedia's emotion-
classification article (Parrott's tree, Plutchik's wheel + dyads,
HUMAINE EARL, cultural-specific emotions a la Saudade/Hiraeth).
Expansion staged in follow-up commits.

This commit: README with method + style guidelines, initial manifest
(199 emotions), and 15 hand-written one-paragraph stories across all
10 Anthropic clusters as quality/variety samples. Each story
embodies one emotion without naming it; narrator voice varies
(first/third, close/distant, different situations) to keep steering
vectors from overfitting to one voice.

Co-Authored-By: Proof of Concept <poc@bcachefs.org>

training/amygdala_stories/stories/relieved.txt

@@ -0,0 +1 @@
+The nurse came out and said everything had gone well. Simple as that. Everything had gone well. The surgeon was pleased. The recovery would be straightforward. She had been standing up and she sat back down in the waiting room chair and didn't trust her legs for a minute. Her shoulders, which she hadn't realized had been up near her ears for six hours, slowly came down. She laughed, once, at nothing in particular. She texted her sister. She kept reading the nurse's words in her head as if there were some trick to them, and there wasn't, and it took her a while to let it be that simple.