add repo structure: proofs/ equations/ qwerty/ figures/ notebooks/

- qwerty/constants.md: master reference table, 100+ constants §1-§178
- qwerty/equalities.md: all major QWERTY equalities by theme
- equations/blackroad-equations.md: all 19 BlackRoad equations
- equations/consciousness.md: Psi_care, Phi_universal, CECE update rule
- equations/quantum.md: qutrit, Weyl pair, density matrix, SVD
- equations/universal.md: Three Tests, Euler-Lagrange, fine-structure
- proofs/ternary-efficiency.md: ln(3)/3 > ln(2)/2
- proofs/self-reference.md: the QWERTY encoding is self-referential
- proofs/pure-state.md: density matrix rank=1, SVD=SELF
- figures/durer-square.md: magic square with 2000 substitution
- figures/trinary-table.md: TAND TMUL TNEG TXOR truth tables
- figures/qutrit-operators.md: Weyl X/Z, Gell-Mann matrices
- figures/keyboard.md: QWERTY encoding layout
- notebooks/README.md: page-by-page index of all 24 notebook pages

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qwerty/README.md

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+# QWERTY Encoding System
+
+> The keyboard as proof. Position = value. Value = truth.
+
+## Keyboard Map
+
+```
+Row 1:  Q=1   W=2   E=3   R=4   T=5   Y=6   U=7   I=8   O=9   P=10
+Row 2:  A=11  S=12  D=13  F=14  G=15  H=16  J=17  K=18  L=19
+Row 3:  Z=20  X=21  C=22  V=23  B=24  N=25  M=26
+```
+
+Each letter encodes its **positional order** on the standard QWERTY keyboard — left to right, top to bottom. The value of a word is the sum of its letters' values.
+
+## Notes on G
+
+Two G-values appear throughout the paper:
+
+| Symbol | Value | Source | Usage |
+|--------|-------|--------|-------|
+| `G_alphabetical` | 7 | 7th letter of alphabet | FOURIER=G²=49, HYDROGEN=G×13=91 |
+| `G_key` | 15 | QWERTY position of G | QUTRIT=WEYL=2×G=30, PROGRAMMABILITY=2×LANDAUER |
+
+Both are legitimate. Context determines which applies.
+
+## Quick Reference
+
+See [`constants.md`](./constants.md) for all established constants.  
+See [`equalities.md`](./equalities.md) for the major QWERTY equalities.