feat(bindings): geo/058 tpoint tile — tiles/boxes/getters + spaceSplit/spaceTimeSplit TableFunctions

[estebanzimanyi]

Closes geo/058_tpoint_tile to 100% by name. Three commits:

1. feat(bindings): tile / box emitters and single-tile getters — 8 new handlers + 25 SQL registrations (LIST(stbox) emitters: spaceTiles / timeTiles / spaceTimeTiles / spaceBoxes / spaceTimeBoxes; single-tile getters: getSpaceTile / getStboxTimeTile / getSpaceTimeTile).
2. chore: ensure trailing newline at EOF across the repo — 39 files repo-wide gain a trailing \n. Reviewer can strip this commit if preferred.
3. feat(bindings): spaceSplit / spaceTimeSplit TableFunctions — 7 new TableFunctions for tgeompoint, set-returning splitters that bucket a trajectory into spatial (and optionally temporal) bins.

New SQL surface

Scalar — LIST(stbox) emitters (commit 1)

Signature	Routed through
spaceTiles(stbox, xsize, ysize, zsize[, sorigin[, borderInc]])	stbox_space_tiles
timeTiles(stbox, duration[, torigin[, borderInc]])	stbox_time_tiles
spaceTimeTiles(stbox, xsize, ysize, zsize, duration[, sorigin[, torigin[, borderInc]]])	stbox_space_time_tiles
spaceBoxes(tgeompoint, xsize, ysize, zsize[, sorigin[, borderInc]])	tgeo_space_boxes
spaceTimeBoxes(tgeompoint, xsize, ysize, zsize, duration[, sorigin[, torigin[, borderInc]]])	tgeo_space_time_boxes

Scalar — single-tile getters (commit 1)

Signature	Routed through
getSpaceTile(point, xsize, ysize, zsize[, sorigin])	stbox_get_space_tile
getStboxTimeTile(t, duration[, torigin])	stbox_get_time_tile
getSpaceTimeTile(point, t, xsize, ysize, zsize, duration[, sorigin[, torigin]])	stbox_get_space_time_tile

TableFunction — splitters (commit 3)

Signature	Returns
spaceSplit(tgeompoint, xsize, ysize, zsize[, sorigin[, bitmatrix]])	TABLE(spaceBin geometry, tpoint tgeompoint)
spaceTimeSplit(tgeompoint, xsize, ysize, zsize, duration[, sorigin[, torigin[, bitmatrix]]])	TABLE(spaceBin geometry, timeBin timestamptz, tpoint tgeompoint)

3 + 4 = 7 TableFunction overloads.

Implementation notes

TableFunctions

Mirror the shape of the existing TemporalUnnest TableFunction in src/temporal/temporal.cpp:

• SpaceSplitBindData captures the input tgeompoint blob and scalar tile parameters at bind time.
• SpaceSplitInitCommon calls tgeo_space_split / tgeo_space_time_split and buffers the parallel output arrays. The spaceBin GSERIALIZED is captured as raw EWKB so the DuckDB-spatial encoding can be deferred to Exec time, which has access to a proper ArenaAllocator scoped to the result vector.
• SpaceSplit/SpaceTimeSplitExec drains the buffer into the output chunk; EmitSpaceBinAt decodes EWKB → GSERIALIZED → GSerializedToGeometry into the output geometry column.

Hooked into LoadInternal via a new RegisterTpointSplit method on TgeompointType, kept distinct from the existing scalar registrations so the boundary between scalar and TableFunction surface stays clear.

Defaults

• Default sorigin is Point(0 0 0) SRID 0, constructed via geompoint_make3dz.
• Default torigin is the MEOS 2000-01-03 reference origin.
• Default bitmatrix is true (matches MobilityDB's SQL DEFAULT).
• Default borderInc is true (same).

Tests

• test/sql/parity/058_tpoint_tile.test — 8 assertions covering each scalar emitter and getter.
• test/sql/parity/058b_tpoint_split.test — 5 query cases covering both spaceSplit overloads, both spaceTimeSplit overloads, and the output schema (ST_AsText(spaceBin), tempSubtype(tpoint)).
• Full suite: 770 assertions / 15 test cases passing under TZ=UTC.

Coverage delta

Per the audit in PR #66:

• geo/058_tpoint_tile and geo/058_tgeo_tile: 0/11 → 11/11 (100%) by name.

Test plan

• cmake --build . --target shell unittest clean
• Both new parity tests pass
• Full suite green (770/15)

[estebanzimanyi]

Superseded by the consolidated PR branch consolidate/tiles-bins-parity. All changes from this PR are included in that branch as a single squashed commit. Please review and merge the consolidated branch instead.