Dane Sabo fa45e96fd1 journal: scaffold + 2 retroactive invention-log entries ...

journal/ directory, LaTeX-based, dated entries, callout boxes for
derivations / decisions / dead ends / limitations, plus an \apass{}
macro for in-line markers when a later deep-pass is needed.

Retroactive A-style entries for 2026-04-17 (controllers, linearization,
LQR, operation-mode linear reach, Lyapunov barrier) and 2026-04-20
(predicates restructure into deadbands+safety+invariants, OL-vs-CL
barrier analysis, mode-obligation taxonomy, heatup-rate-as-halfspace,
mode_boundaries, first Julia nonlinear reach attempt).

Both entries include derivations written out in math, dead-ends I
hit, code snippets with commentary, figure embeds, and terminal
output where it changed what we did next.  The goal is invention-log
depth — readable 4 years from now without the git history to help.

journal/README.md documents the conventions.  journal.tex aggregates
all entries into one PDF via latexmk.

Kept claude_memory/ separate as per earlier agreement — those are
short AI-context notes, different audience.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-04-20 21:37:59 -04:00

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