Thermocline v1.1.0

Added

• Accent colours: Solar Gold (--pt-solar #E0A32E, auto-deepening to --pt-solar-deep #C8860F on light surfaces) for the star and its irradiation, and Verdant (--pt-verdant #57A 5C) for the habitable endpoint. Both widen the categorical plot cycle for many-line figures and are CVD-validated as a set (Machado 2009): light cycle worst-pair ΔE 15.7, dark 16.8.
• proteus-mpl: CYCLE grows to 9 colours and CYCLE_DARK (still 6) swaps azure and grey for solar and a brightened verdant, both cycles reordered neutral-first (first series draws in ink/paper); COLORS gains solar, solar_deep, verdant; a use("white") variant for journals that require a pure-white page; the OFL brand fonts now ship inside the package and register automatically.
• Beamer: ProteusSolar / ProteusSolarDeep / ProteusVerdant colours and \solar{} / \verdant{} helpers; \solar{} follows the active frame surface.
• glyph_solar colorway (SVG, PNG, JPG) completing the domain-tint matrix.
• Background-free lockup exports in logo/lockup/: transparent PNG and PDF
  (vector wordmark text) in both letter colours, and plain on-black / on-white
  JPG compositions for contexts without transparency. The README uses the
  transparent pair.

Changed

• Framework tag position: the tag sits tucked into the lockup's lower-right corner (raised 0.03x, inset 0.32x of the wordmark size) in every template and page; all eight lockup exports regenerated, the transparent exports now measure 1554x370.
• Stellar (MORS) domain colour from pale ice #A8D4E8 to Solar Gold #E0A32E: the star gets its own colour, the six-domain CVD minimum stays at ΔE 16.4, and the recolour fixes ice being nearly invisible (1.59:1) on white pages.
• docs/color.md restructured into primaries / accents / neutrals tiers.