Editing O'Neill Habitat Ring Seven (section)

=== Construction Phases ===

Construction unfolded across four defined phases spanning twelve years.

* '''Phase I (2179–2182 CE):''' Cylinder shell fabrication in Lunagineering Consortium orbital yards; endcap geodesic lattices assembled and pressure-tested.
* '''Phase II (2183–2186 CE):''' Heavy-lift delivery of cylinder sections to the L5 insertion point. The first major delivery convoy was commanded by [[Captain Amara Chen]] of the [[Fusion Tug Guild of Mars]], operating [[Zheng-He Fusion Tug Mark IV|Zheng-He Mark IV]] vessels. Chen's convoy of seven tugs delivered the paired endcap sections in 2184 CE, a logistical operation later studied by the [[Helium-3 Licensing Board of Luna]] as a model for bulk orbital delivery scheduling.
* '''Phase III (2186–2189 CE):''' Interior fit-out; installation of mirror array, agricultural sleeve modules, atmospheric sealing, and initial soil substrate.
* '''Phase IV (2189–2191 CE):''' Systems commissioning under Director Mira Okonkwo's Habitat Authority; first residential occupancy declared 7 September 2191 CE.

{| class="wikitable"
|-
! Phase !! Years !! Primary Activity !! Responsible Party
|-
| I || 2179–2182 CE || Shell fabrication and endcap assembly || Lunagineering Consortium
|-
| II || 2183–2186 CE || Heavy-lift delivery convoys || Fusion Tug Guild of Mars (Captain Amara Chen)
|-
| III || 2186–2189 CE || Interior fit-out and atmospheric sealing || Lunagineering Consortium / Habitat Authority
|-
| IV || 2189–2191 CE || Systems commissioning and occupancy || Habitat Authority (Director Mira Okonkwo)
|}