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/lonely.txt

@@ -0,0 +1 @@
+Third Saturday in a row. The apartment was fine — clean, warm, a show playing that he wasn't watching. He had messaged three people earlier and none had replied, which was nobody's fault, Saturdays were Saturdays, but the quiet in the apartment had a specific shape. It wasn't peaceful quiet. It was the kind that sounded like everyone else was somewhere else, together. He thought about putting on real clothes and going to a bar alone, and the thought of being at a bar alone was worse than the apartment, so he didn't. He ate leftover rice standing up and told himself he'd go to bed early.