Thylakoid light reactions

The light-driven electron transport and photophosphorylation half of oxygenic photosynthesis, as a taxon-neutral decomposition: light harvesting by the antenna, water oxidation at photosystem II, plastoquinol oxidation and proton translocation by the cytochrome b6f complex, the inter-photosystem mobile carrier, P700 photo-oxidation and ferredoxin reduction at photosystem I, NADPH production by ferredoxin-NADP+ reductase, and ATP synthesis from the proton-motive force. Phrased as functions, complexes and pathway segments rather than a fixed gene list, so it can represent cyanobacterial, algal and plant implementations. Carbon fixation is a separate module (MODULE:calvin_benson_bassham_cycle), which consumes the ATP and NADPH this module supplies. Photoprotection and cyclic/pseudocyclic electron balancing stay with the parent MODULE:oxygenic_photosynthesis, since they regulate the ratio between the two halves rather than belonging to either. Anoxygenic photosynthesis (single reaction center, non-water electron donors) is out of scope.

Extracted from MODULE:oxygenic_photosynthesis, which now includes this module by reference, so that each module stays small enough to read and can be reused on its own. Identifiers are grounded only where verified against the local GO term cache, GOlr, or UniProt; descriptors without a `term` are deliberate (no confident identifier yet) rather than oversights. Representative UniProt members are concrete orienting examples, not exhaustive or species-restricting claims.