RESOLIA v3 is the first bioplastic that simultaneously solves the four fatal flaws of current biodegradable materials: poor gas barrier, low-temperature brittleness, no self-repair, and microplastic residue. It applies five biological principles — bacterial PHA matrix (N=71.954, Δ=0.046 ★★), tardigrade-inspired vitrification (VitriPAO), glass sponge silicification (BioSilik), pH-triggered chitosan degradation (N=79.049 ★★), and D1 protein self‑repair from photosynthesis — in a single four‑layer laminate. Oxygen transmission rate <1 cc/m²/day (comparable to aluminium foil), water vapour transmission <0.5 g/m²/day, useful temperature range from −30 °C to +80 °C, elongation at break 15‑40%, tensile strength 45‑70 MPa. Micro‑cracks self‑heal within 24 hours via quercetin‑loaded chitosan microspheres. Under soil conditions, pH‑triggered degradation reaches 90% in 6‑8 months, leaving only amorphous silica (sand) and quercetin — no persistent microplastics. All components are bio‑sourced or from waste streams: PHA from bacterial fermentation (Cupriavidus necator) using CO₂, methane or agricultural waste; chitosan from seafood processing waste; lignin from paper industry black liquor; quercetin from onion skin waste. The material can be carbon‑negative when PHA is produced from CO₂ + H₂ (e.g., using surplus HTGR electricity). PAO resonance analysis confirms that every key molecule — PHA monomer, sorbitol, chitosan, lactic acid — lies within the N=70‑81 biological stability zone, explaining their exceptional compatibility and controlled degradation. Current cost: €3.50‑5.50/kg (at pilot scale). Projected cost at scale (2030): €1.80‑2.80/kg, driven by PHA learning curve — following the same trajectory as PLA (€8/kg in 2000 → €1.50/kg in 2024). Applications include fresh food packaging, agricultural mulch film, medical packaging, cold chain (pharmaceuticals, vaccines), and marine‑degradable fishing gear. No petroleum. No toxic additives. No microplastics. Open research. No patents. CC BY 4.0. Version 3 of the RESOLIA series (previous DOI: 10.5281/zenodo.19421783). This update adds the VitriPAO barrier, PHA/sorbitol low‑temperature flexibility, and D1‑inspired self‑repair.