branding: SimurgArray brand kit (mark, wordmark, lockups, icons, templates, guide)

Frontal dotted simurg on a bead grid: gold body and wings, three-dot crown,
red / gold / green channel plumes with peacock eyes. Detailed (31x27), simple
(11x10) and micro (7x7) drawings; dark, light, gold, black, white versions;
outlined Noto Sans wordmark; favicon and app icons; README banner, social
preview, avatar, featured-image template, report corner mark, CLI banner.
Checks: WCAG contrast table, protan/deutan simulation, icon sizes, family
sheet. Blog featured images regenerated with the new mark for consistency.
Geometry shared in scripts/brand/simurg_mark.py.

branding/checks/contrast.md

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+| colour | on | use | contrast | AA text (4.5) | graphics (3.0) |
+|---|---|---|---|---|---|
+| paper #F7F5EF | indigo #1E2240 | text on dark | 14.18 | yes | yes |
+| muted_dark #A3A7C9 | indigo #1E2240 | secondary text on dark | 6.57 | yes | yes |
+| gold #D4A017 | indigo #1E2240 | accent text on dark | 6.51 | yes | yes |
+| indigo #1E2240 | paper #F7F5EF | text on light | 14.18 | yes | yes |
+| muted_light #5A5E7E | paper #F7F5EF | secondary text on light | 5.77 | yes | yes |
+| gold_ink #8C6500 | paper #F7F5EF | accent text on light | 4.84 | yes | yes |
+| red #C8453A | indigo #1E2240 | graphics on dark | 3.22 | no | yes |
+| green #2F8F5B | indigo #1E2240 | graphics on dark | 3.83 | no | yes |
+| gold_deep #A87A00 | paper #F7F5EF | graphics on light | 3.54 | no | yes |
+| red #C8453A | paper #F7F5EF | graphics on light | 4.41 | no | yes |
+| green #2F8F5B | paper #F7F5EF | graphics on light | 3.70 | no | yes |
+| gold #D4A017 | paper #F7F5EF | never for text or small marks | 2.18 | no | no |