Valley solver rejections carry the failing measure (required cut, exposed stations, missing head) through the planner diagnostics; the transect probe prints them.
- Only the centerline cell of the first station carries the source feature
- Headwater and styled geometry tests expect the spring pool
- Transect table starts with the first 24 stations
- channel.springWidthRatio / springLength open every surface river in a pool that shrinks where the ground falls away
- Banks settings keep structural invariants only; authoring bounds stay in the validator
- Feature searches walk tiles outward and stop early; find and goto report progress per ring
- surface.bed: falling blocks under and beside river water are replaced by a padding palette unless allowed
- Ring order helper for bounded feature searches
- Geometry pins became relational properties; tests for deleted mechanisms removed
- Every owned channel water column is published to the mantle so steps get fluid updates
- Upper beds at head steps reach the lower head so the water stays one body
- Ocean aprons are measured from the first ocean station and bounded laterally
- Dry cave headroom uses the flooded cave biome
- Head ring now covers every cell that can sit beside water
- Blend widths are smoothed along the course; the bed is a broad bowl
- Diagonal shore cells keep the lip; cross-section rows belong to their own station
- Transect probe prints coordinates and numeric section tables
- PackHydrologyValidator rewritten for surface.channel/banks/flow/mouths, routing weights and bankBiomes
- 76 unreferenced private members deleted from HydrologyPlanner and HydrologyFootprintCompiler
- riverTransectProbe renders each surface course as a plan and five cross-sections
- Summary gates ocean writes and spilling channel cells
- Grading columns now report the bank biome
- Skip nib, pothole, wall and slab post passes on river footprints and their collar
- Keep automatic object scatter off the channel and shore band
- Expose deeper biome layers on eroded banks and use the bank biome on the blend band
- Give dry cave headroom the flooded cave biome
- Build surface courses through the valley solver and segment labeler
- Compile surface footprints through the erosion field and index them for cave containment
- Drop the contained-surface fallback and the post-hoc surface rejection passes
- Choose the river profile at the source
- Add the surface package with centerline densification, channel profile, valley head solver and erosion field
- Derive the head from the bank ring outside the channel so every wet cell is contained by construction
- Stamp one continuous cross-section with a cut-scaled blend and a freeboard lip, filtered at the ocean
- Replace hydraulics, ridge tunnel, branching and inset ranges with channel, banks, flow and mouth configs
- Add routing cost weights, underground mouth leveling, bank biomes and bank multiplier
- Map the new schema into planner settings and derive refinement spacing
- Replace the river package with the hydrology planner, footprint compiler, cave containment and runtime
- Add the hydrology pack schema, validator, probes and tests
- Wire hydrology into IrisComplex, actuators, mantle, Vision and commands
