ROADMAP.md

Roadmap

Purpose

This roadmap records completed phases and planned future phases.

It is intentionally phase-oriented rather than issue-oriented. Detailed current tasks live in PLAN.md.

Phase 0: Initial public foundation

Status: complete.

Delivered:

• Tauri, React, TypeScript desktop app foundation.
• local-first app shell.
• initial world-time visualization.
• AGPL licensing.
• public-release documentation.
• baseline test infrastructure.

Phase 1: RenderPlan architecture

Status: complete enough for current Canvas path.

Delivered:

• renderer-neutral render intent model.
• executor/backend separation.
• Canvas backend implementation.
• text, rect, line, path, gradient, raster patch, and image primitives.
• bridge modules for Canvas-specific realization.
• backend resource lifecycle reporting for raster image failures.

Remaining future work:

• reduce transitional backend-native path payloads.
• expand primitive coverage only when needed.
• prepare for GPU backend after product semantics are fully upstream.

Phase 2: Structured chrome and top-band model

Status: complete for supported production path.

Delivered:

• top chrome as screen-space layout.
• reserved scene viewport below chrome.
• structured chrome.layout.hourMarkers.
• semantic hour-marker planner.
• hour-marker layout.
• text and procedural realization adapters.
• text, analog clock, radial line, and radial wedge realization families.
• top-band display formatting that does not move canonical time.
• hour-marker editor extraction and axis organization.
• removal of stale flat hour-marker persistence.

Remaining future work:

• polish appearance controls.
• add user-facing clarity for reference-frame and display-format modes.
• revisit accessibility and high-contrast controls.

Phase 3: Font and glyph subsystem

Status: implemented and usable.

Delivered:

• font asset preprocessing.
• generated font asset database and manifest.
• runtime font registry.
• Canvas font loading and registration.
• typography role resolution.
• procedural glyph emission through RenderPlan-compatible primitives.

Remaining future work:

• font management UI polish.
• additional bundled font curation.
• optional user font import only if it can preserve durable identity and licensing clarity.

Phase 4: SceneConfig foundation

Status: complete.

Delivered:

• authoritative SceneConfig.
• projection id.
• view mode.
• base map config.
• ordered layer stack.
• deterministic ordering.
• scene-authoritative runtime rebuild behavior.
• compatibility from older scene-relevant booleans where needed.

Remaining future work:

• keep legacy compatibility from creeping back into active authoring paths.
• continue strengthening tests around config normalization and migration.

Phase 5: Curated base-map catalog

Status: complete enough for feature-forward map work.

Delivered:

• bundled JSON base-map catalog.
• family ids, labels, categories, paths, previews, capabilities, defaults, and attribution.
• structured selector attribution on all bundled families (attribution, optional licenseNote, up to two sourceLinks; Source & license block in BaseMapStyleControl—see Phase 8).
• month-aware selector polish: Blue Marble catalog copy, variantMode on selector options, active UTC civil month line when config is open (see Phase 8 / Slice 4).
• selector/editor integration.
• per-family base-map presentation controls.
• static and month-aware variant modes.
• product-time month resolution.
• missing month fallback.
• runtime image failure fallback.
• maps:prep onboarding workflow.

Current families include:

• legacy reference map (equirect-world-legacy-v1, bundled preview world-equirectangular-thumb.jpg).
• political map (equirect-world-political-v1, Natural Earth–lineage shipped raster; not transitional in the bundled catalog).
• geology / geologic provinces substrate (equirect-world-geology-v1, shipped raster in the bundled catalog; USGS public-domain lineage).
• global bathymetry / relief substrate (equirect-world-bathymetry-etopo-v1, shipped raster in the bundled catalog; NOAA NCEI ETOPO 2022 lineage).
• global land cover / vegetation substrate (equirect-world-landcover-modis-v1, shipped raster in the bundled catalog; NASA MODIS IGBP lineage).
• present-day Köppen–Geiger climate zones substrate (equirect-world-climate-koppen-beck-v1, shipped raster in the bundled catalog; Beck et al. 2018 / GloH2O lineage, CC BY 4.0).
• global population density substrate (equirect-world-population-gpw-v1, shipped raster in the bundled catalog; NASA SEDAC GPWv4 Rev. 11 lineage, CC BY 4.0).
• validated static Natural Earth–lineage global topography (equirect-world-topography-ne-v1, world-equirectangular-topography.jpg).
• Blue Marble / natural-color families (month-aware BM, T, TB; legacy ids equirect-world-topography-v1 / equirect-world-topo-v1 alias to T for compatibility).

Remaining future work:

• normalize family ids and labels while catalog is young.
• ensure all placeholder flags match real source status.
• document each source workflow cleanly.
• full-screen source attribution panel (Layers detail remains the Source & license block only—see docs/FUTURE_FEATURES.md).

Phase 6: Static and derived overlays

Status: partially complete for the full static/derived overlay roadmap; upstream planetary illumination composition (twilight, moonlight, emissive night lights, single rasterPatch) is delivered and should be treated as a coherent subsystem (see ARCHITECTURE.md, PLAN.md). Overlay readability (v1 + v1.1 + derived substrate lift + substrate heuristic increments — sub-1 brightness dimming + optional catalog reliefShaded / boundaryDense / chromaticDense / bathymetryShaded / fineScaleTexture / labelDense / etchedReliefDense / sunGlintDense — + SceneConfig presentation scalars + per-layer pilots for default stack rows — perLayer.grid, perLayer.solarAnalemma, perLayer.subsolarMarker, perLayer.sublunarMarker, perLayer.cityPins, perLayer.staticEquirectOverlay) is a completed milestone within this phase; broader overlay/editor and astronomical depth remain future work.

Delivered:

• static raster overlay path.
• source-driven overlay construction.
• generalized semantic participation for supported rows.
• derived layer source model.
• solar analemma ground-track overlay.
• subsolar marker.
• sublunar marker.
• solar shading / dark-side visualization.
• continuous attenuation-driven twilight transitions driven by surface solar altitude (civil, nautical, astronomical retained as semantic anchors), encoded in the same planetary illumination raster as day/night rather than a separate user-facing twilight layer.
• non-emissive atmospheric tint and attenuation composition replacing earlier glow-style twilight behavior.
• incremental upstream twilight transition tuning (cumulative constants-only passes in src/renderer/illuminationShading.ts, including second and third narrow passes doc-finalized in PLAN.md / Phase 7 here: wider anchor color coupling, cooler low-luminance anchor progression, bounded atmospheric tint cap, gentler day-side tint envelope, third-pass sigma/day-edge refinement)—still one planetary illumination rasterPatch, still non-emissive modulation.
• perceptually legible moonlight composition integrated into the same planetary illumination raster.
• bounded cool secondary lunar illumination field with phase, night-eligibility, and local incidence participation.
• scene-level scene.illumination.moonlight.mode (off / natural / enhanced / illustrative) adjusts composition policy only while preserving renderer/backend boundaries.
• scene-level scene.illumination.emissiveNightLights (mode, durable assetId, presentation intensity and driver exponent) for upstream emissive radiance (not a base-map selection); assetId canonicalizes through the bundled emissive composition catalog; greenfield default mode is illustrative (with illustrative moonlight; persisted explicit modes are preserved); Layers UI exposes Off / Natural / Enhanced / Illustrative plus night-light intensity and faint-light lift; validated NASA Black Marble 2016 1° JPEG is the shipped default asset (docs/maps/MAP_ASSET_SOURCES.md).
• physically-derived polar illumination behavior from seasonal solar geometry.
• astronomical scene participation integrated into the layered scene system.
• Overlay readability (v1 + v1.1 + substrate + substrate heuristic increments + SceneConfig presentation + default-stack per-layer pilots): solar night-veil–aligned hints on lat/lon grid, solar analemma polyline, subsolar/sublunar markers, city pins (per-pin combined veil), and static full-viewport equirect raster overlays (global combined veil → merged imageBlit cssFilter upstream, or pilots per defaulted row below); one OverlayReadabilityFrame per tick on TimeContext when the shell attaches it (getOverlayReadabilityFrameOrCompute in layers); v1.1 folds emissive night-light policy (mode + presentation) into the combined veil without emissive raster sampling; substrate-aware substrateOverlayReadabilityLiftScale01 from effective base-map presentation + catalog capabilities modulates overlay lift upstream, including optional reliefShaded / boundaryDense / chromaticDense / bathymetryShaded / fineScaleTexture / labelDense / etchedReliefDense / sunGlintDense intrinsic hints and sub-1 effective brightness dimming in penalty derivation; persisted scene.overlayReadability.presentation scales combined veil and substrate lift after the derived frame; optional perLayer keys grid, solarAnalemma, subsolarMarker, sublunarMarker, cityPins, staticEquirectOverlay apply the same scalars again for those layers only.
• Catalog curation (substrate lift): bundled base-map-catalog.json marks bathymetryShaded on equirect-world-blue-marble-tb-v1 (with reliefShaded) as the curator signal for shaded bathymetry competing with overlays, fineScaleTexture and sunGlintDense on Blue Marble BM/T for fine-scale natural-color texture and dense open-ocean sun glint, chromaticDense and fineScaleTexture on equirect-world-landcover-modis-v1 and equirect-world-climate-koppen-beck-v1 for thematic class colors and boundary grain, chromaticDense and fineScaleTexture on equirect-world-population-gpw-v1 for log-scaled density ramp and urban grain, labelDense on equirect-world-political-v1 and equirect-world-geology-v1 (alongside chromaticDense / boundary+chromatic hints) for dense cartographic typography, etchedReliefDense on equirect-world-legacy-v1 for packaged etched shaded relief, and reliefShaded on equirect-world-topography-ne-v1 for the static Natural Earth–lineage global topography raster—no runtime raster sampling.

Remaining future work:

• Readability extensions (future): perLayer pilots for scene stack rows beyond the six defaulted ids (grid, solarAnalemma, subsolarMarker, sublunarMarker, cityPins, staticEquirectOverlay) when additional rows ship with the same readability contract; further substrate heuristics beyond the shipped presentation + overlayOptimized / darkFriendly + reliefShaded / boundaryDense / chromaticDense / bathymetryShaded / fineScaleTexture / labelDense / etchedReliefDense / sunGlintDense + sub-1 brightness dimming rules (still upstream, no backend policy).
• further atmospheric scattering and transition refinement beyond cumulative incremental twilight tuning in the existing continuous twilight field.
• weather/cloud upstream participation in planetary composition (ties to Phase 10 lifecycle when opened; planning shipped in docs/specs/scene/weather-cloud-composition-plan.md).
• active solar-position synchronization along astronomical reference trajectories.
• richer derived astronomical overlays.
• overlay editor refinement.
• opacity and ordering UX.
• source and presentation separation in all new layer types.

Phase 7: Documentation and AI co-engineering consolidation

Status: active.

Goals:

• consolidate docs.
• preserve future feature inventory.
• create project-level AI working rules.
• add Cursor project rules.
• keep future sessions from re-solving settled architecture.
• keep agent-facing and plan docs aligned with shipped subsystems (e.g. overlay readability …; cumulative incremental twilight transition tuning in illuminationShading.ts; structured map selector attribution; population density equirect-world-population-gpw-v1; weather/cloud planning in docs/specs/scene/weather-cloud-composition-plan.md; not stale “v1 only”, “substrate unreadable”, “no twilight tuning”, “weather/cloud planning not shipped”, “population density not shipped”, or “attribution presentation not shipped” phrasing).

Exit criteria:

• docs can onboard a future chat session.
• Cursor receives persistent project rules.
• roadmap and future-feature backlog are explicit.
• stale historical docs are clearly marked historical.

Completed milestones (rolling):

• Atmospheric twilight refinement (incremental): docs and maturity describe shipped upstream-only cumulative tuning in illuminationShading.ts (anchor coupling, tint cap, day-side envelope across narrow constants-only passes; second pass widened Gaussian sigma, deepened low-luminance anchor chroma, TWILIGHT_ATMOSPHERIC_ALPHA_MAX 0.172, day envelope to dayClear+1.28°; third pass sigma 4.5, day envelope to dayClear+1.38°); further scattering/haze and optional persisted softness remain future (PLAN.md Slice 2, Phase 6/9).
• Overlay readability + substrate catalog (shipped baseline, doc-finalized): docs describe scene.overlayReadability.presentation, default-stack perLayer keys (grid, solarAnalemma, subsolarMarker, sublunarMarker, cityPins, staticEquirectOverlay), and the eight-intrinsic substrate lift rules (reliefShaded / boundaryDense / chromaticDense / bathymetryShaded / fineScaleTexture / labelDense / etchedReliefDense / sunGlintDense, sub-1 brightness dimming, overlayOptimized / darkFriendly). Curator notes live in docs/maps/MAP_ASSET_SOURCES.md and docs/maps/MAP_ASSET_STRATEGY.md. Next readability work is additional optional catalog/resolver substrate signals beyond that eight-flag intrinsic set (plus presentation multipliers) and perLayer coverage for stack rows beyond the six defaults when product-ready (Phase 6 “remaining” extensions).
• Substrate intrinsic labelDense (Slice 2 shipped): optional capabilities.labelDense on equirect-world-political-v1 and equirect-world-geology-v1 in the bundled catalog; intrinsic penalty in src/core/substrateOverlayReadabilityLiftScale.ts; tests in src/core/substrateOverlayReadabilityLiftScale.test.ts.
• Substrate intrinsic etchedReliefDense (Slice 2 shipped): optional capabilities.etchedReliefDense on equirect-world-legacy-v1 in the bundled catalog; intrinsic penalty in src/core/substrateOverlayReadabilityLiftScale.ts; tests in src/core/substrateOverlayReadabilityLiftScale.test.ts.
• Substrate intrinsic sunGlintDense (Slice 2 shipped): optional capabilities.sunGlintDense on equirect-world-blue-marble-bm-v1 and equirect-world-blue-marble-t-v1 in the bundled catalog; intrinsic penalty in src/core/substrateOverlayReadabilityLiftScale.ts; tests in src/core/substrateOverlayReadabilityLiftScale.test.ts.
• Eight-intrinsic substrate overlay-lift contract (doc-finalized): product docs, map asset notes, and rules describe the shipped optional catalog intrinsics through sunGlintDense as the complete substrate-readability baseline; Slice 2 queue B default cadence closed—ninth+ axes reopen only with explicit product scope.
• Slice 2 queue B — default substrate-increment cadence (closed): standing ninth+ BaseMapCapabilities intrinsics are not the default next PR; see PLAN.md closed increment.
• Slice 2 queue C — default twilight-increment cadence (closed): standing fourth+ constants-only twilight passes are not the default next PR; cumulative tuning through the third pass is the complete incremental twilight baseline; see PLAN.md closed increment.
• Phase 8 / Slice 3 topography preview (closed): equirect-world-topography-ne-v1 bundled preview (world-equirectangular-topography-thumb.jpg, catalog previewThumbnailSrc, tests); see PLAN.md closed increment.
• Phase 8 / Slice 3 legacy preview (closed): equirect-world-legacy-v1 bundled preview (world-equirectangular-thumb.jpg, catalog previewThumbnailSrc, tests)—all bundled base-map families now have catalog previews; see PLAN.md closed increment.
• Phase 8 / Slice 3 bathymetry (closed): equirect-world-bathymetry-etopo-v1 ship raster + preview + catalog + ETOPO dateline-roll provenance; registration regression in src/config/bathymetryOnboardedAsset.test.ts; see PLAN.md closed increment.
• Phase 8 / Slice 3 land cover (closed): equirect-world-landcover-modis-v1 ship raster + preview + catalog + GIBS/MODIS IGBP provenance; registration regression in src/config/landcoverOnboardedAsset.test.ts; see PLAN.md closed increment.
• Phase 8 / Slice 3 population density (closed): equirect-world-population-gpw-v1 ship raster + preview + catalog + GPWv4 provenance; registration regression in src/config/populationOnboardedAsset.test.ts; see PLAN.md closed increment.
• Phase 8 / Slice 3 climate normals (closed): equirect-world-climate-koppen-beck-v1 ship raster + preview + catalog + Beck Köppen–Geiger provenance; registration regression in src/config/climateNormalsOnboardedAsset.test.ts; see PLAN.md closed increment.
• Phase 8 / Slice 3 map inventory (queue A (2) closed): all eleven bundled catalog families have previewThumbnailSrc (legacy + static scientific substrates + Blue Marble) and structured attribution in the selector (Source & license block; catalog licenseNote + sourceLinks)—default next Phase 8 / queue A when sourced substrate or explicit scope exists; Slice 2 queues B/C closed (PLAN.md handoff).
• Phase 8 / Slice 4 month-aware selector (closed): Blue Marble catalog copy, variantMode on selector options, active UTC civil month line in BaseMapStyleControl, productInstantMs from render loop when config is open; see PLAN.md closed increment.
• Phase 8 / Slice 3–4 attribution presentation (closed): richer attribution in BaseMapStyleControl + catalog fields on all eleven bundled families; see PLAN.md closed increment.
• Slice 2 queue D — weather/cloud planning (closed): docs/specs/scene/weather-cloud-composition-plan.md; implementation blocked on Phase 10 lifecycle; see PLAN.md closed increment.

Phase 8: Map inventory and scientific substrate expansion

Status: planned (in progress; queue A (2) closed for current catalog). Default next macro PR track: Phase 8 / queue A (sourced static substrate or explicitly scoped polish) per PLAN.md handoff—Slice 2 queues B/C closed (composition baseline complete). Structured attribution presentation and month-aware selector polish shipped (queue A items (1) and (2b) closed). Queue (2) shipped: land cover equirect-world-landcover-modis-v1, bathymetry equirect-world-bathymetry-etopo-v1, climate normals equirect-world-climate-koppen-beck-v1, population density equirect-world-population-gpw-v1. Preferred next backlog (when sourced): temperature or precipitation climatology static family. Queue D weather/cloud planning shipped—implementation blocked on Phase 10.

Rolling delivered (Slice 3 / Phase 8):

• Default reference substrate equirect-world-legacy-v1 (public/maps/world-equirectangular.jpg; preview public/maps/previews/world-equirectangular-thumb.jpg). See docs/maps/MAP_ASSET_SOURCES.md.
• Validated static Natural Earth–lineage global topography base-map family equirect-world-topography-ne-v1 (public/maps/world-equirectangular-topography.jpg; bundled catalog sets reliefShaded for upstream overlay lift; preview public/maps/previews/world-equirectangular-topography-thumb.jpg; legacy equirect-world-topography-v1 / equirect-world-topo-v1 scene ids remain resolver aliases for equirect-world-blue-marble-t-v1). See docs/maps/MAP_ASSET_SOURCES.md.
• Shipped political/reference substrate equirect-world-political-v1 (public/maps/world-equirectangular-political.jpg; bundled catalog without transitionalPlaceholder; Natural Earth attribution; preview public/maps/previews/world-equirectangular-political-thumb.jpg). See docs/maps/MAP_ASSET_SOURCES.md.
• Shipped geology / geologic provinces substrate equirect-world-geology-v1 (public/maps/world-equirectangular-geology.jpg; bundled catalog without transitionalPlaceholder; USGS public-domain attribution; preview public/maps/previews/world-equirectangular-geology-thumb.jpg). See docs/maps/MAP_ASSET_SOURCES.md.
• Shipped bathymetry / global relief substrate equirect-world-bathymetry-etopo-v1 (public/maps/world-equirectangular-bathymetry.jpg; bundled catalog without transitionalPlaceholder; NOAA NCEI ETOPO 2022 attribution; preview public/maps/previews/world-equirectangular-bathymetry-thumb.jpg; bathymetryShaded + reliefShaded). See docs/maps/MAP_ASSET_SOURCES.md.
• Shipped land cover / vegetation substrate equirect-world-landcover-modis-v1 (public/maps/world-equirectangular-landcover.jpg; bundled catalog without transitionalPlaceholder; NASA MODIS IGBP attribution; preview public/maps/previews/world-equirectangular-landcover-thumb.jpg; chromaticDense + fineScaleTexture). See docs/maps/MAP_ASSET_SOURCES.md.
• Shipped Köppen–Geiger climate zones substrate equirect-world-climate-koppen-beck-v1 (public/maps/world-equirectangular-climate.jpg; bundled catalog without transitionalPlaceholder; Beck et al. 2018 CC BY 4.0 attribution; preview public/maps/previews/world-equirectangular-climate-thumb.jpg; chromaticDense + fineScaleTexture). See docs/maps/MAP_ASSET_SOURCES.md.
• Shipped GPWv4 population density substrate equirect-world-population-gpw-v1 (public/maps/world-equirectangular-population.jpg; bundled catalog without transitionalPlaceholder; NASA SEDAC GPWv4 CC BY 4.0 attribution; preview public/maps/previews/world-equirectangular-population-thumb.jpg; chromaticDense + fineScaleTexture). See docs/maps/MAP_ASSET_SOURCES.md.

Candidate deliverables:

• further map selector polish (labels, placeholder hygiene; month-aware copy and active UTC civil month indication shipped in Slice 4).
• broader map selector copy and placeholder hygiene across the young catalog.
• additional climate products (shipped baseline: equirect-world-climate-koppen-beck-v1; future: temperature/precipitation climatologies, alternate Köppen epochs).
• additional night-light or emissive-compatible substrate families (distinct from the composition-input Black Marble path).
• seasonal natural-color refinements.

Phase 9: Planetary scene composition and illumination — incremental extensions

Status: planned (extends Phase 6 production baseline; composition baseline closed for standing Slice 2 B/C default cadence — no new rendering boundary).

The subsystem baseline is delivered (PLAN.md Slice 2): readability v1 + v1.1 + eight-intrinsic substrate lift + presentation + six default-stack perLayer pilots + third twilight pass. Further substrate signals, atmosphere tuning, and clouds/weather reopen only with explicit product scope or Phase 10 prerequisites—not as standing default PRs.

Candidate deliverables:

• Readability extensions: perLayer readability for scene stack rows beyond those six defaulted ids when product-defined; finer semantics when multiple overlay rows share one pilot key (e.g. static equirect); further substrate heuristics beyond presentation + overlayOptimized / darkFriendly + reliefShaded / boundaryDense / chromaticDense / bathymetryShaded / fineScaleTexture / labelDense / etchedReliefDense / sunGlintDense + sub-1 brightness dimming when product needs them.
• higher-fidelity atmospheric scattering, glow, and transition tuning on top of the existing continuous attenuation-driven twilight model (cumulative incremental non-emissive twilight tuning is already shipped in illuminationShading.ts; deeper fidelity remains).
• weather/cloud participation in planetary composition (after Phase 10 lifecycle; follows docs/specs/scene/weather-cloud-composition-plan.md—planning closed).
• composition-aware day/night illumination nuances tied to overlays and substrate.
• blending modes, masking, and clipping only when justified by readability or data participation needs (not as an open-ended backend compositor).
• optional additional emissive or radiance contributors beyond the dedicated Black Marble path if product scope requires them.

Architectural direction:

• atmospheric attenuation, reflected illumination, and emissive illumination already participate in one coherent upstream planetary composition model; Phase 9 deepens and widens that model.
• composition semantics remain upstream.
• RenderPlan remains the rendering boundary.
• backend remains unaware of planetary composition policy.
• future weather/cloud systems should participate in scene composition rather than acting as isolated overlays.

Delivered in Phase 6 (emissive MVP and integration complete for current scope):

• typed emissive presentation modes, deterministic solar-altitude visibility gate, moonlight coexistence scaling, and scene.illumination.emissiveNightLights normalization.
• bundled emissive composition catalog plus resolver (resolveEmissiveCompositionAssetIdToCanonicalId); unknown or blank assetId values canonicalize to the catalog default.
• emissive radiance sampled into the same upstream planetary illumination raster as solar/twilight/moonlight when mode is not off and the resolved raster decodes; otherwise contribution is zero; Layers tab mode control; onboarded asset validation (dimensions + SHA-256) in CI; perceptual luma driver via presentation.driverExponent.

Remaining under Phase 9 (composition expansion, not baseline emissive or settled overlay readability v1 + v1.1 + substrate lift + substrate heuristic increments + presentation scalars + six default-stack perLayer pilots delivery):

• readability extensions (perLayer beyond the shipped six defaults where needed; finer multi-row static-raster semantics; further substrate modeling beyond the shipped presentation + dimming + reliefShaded / boundaryDense / chromaticDense / bathymetryShaded / fineScaleTexture / labelDense / etchedReliefDense / sunGlintDense + overlayOptimized / darkFriendly model).
• further weather/cloud implementation (planning in docs/specs/scene/weather-cloud-composition-plan.md), further atmospheric refinement beyond cumulative shipped twilight tuning, and optional higher-resolution or alternate-year emissive assets when curated.

Phase 10: Dynamic data lifecycle

Status: future.

Candidate deliverables:

• lifecycle manager.
• acquisition modes.
• cache policies.
• versioned snapshots.
• loading/stale/error states.
• playback/scrubbing readiness.
• live and forecast data preparation.

Candidate future layers:

• weather.
• clouds.
• radar.
• aircraft.
• shipping.
• earthquakes or volcanoes.
• aurora forecasts.
• satellite paths.

Phase 11: Scene view and projection expansion

Status: future.

Candidate deliverables:

• zoom and pan.
• viewport clipping.
• tile readiness.
• alternate projections.
• globe or perspective view.
• scene interaction.
• inverse projection for hover/click inspection.

Phase 12: Preset system

Status: future.

Candidate deliverables:

• named partial config presets.
• explicit preset application order.
• last-write-wins semantics.
• preset stacks.
• narrow appearance presets.
• scene/layer presets.
• export/import of presets.

Phase 13: Renderer expansion

Status: future.

Candidate deliverables:

• GPU renderer feasibility study.
• backend capability matrix.
• performance instrumentation.
• renderer-independent visual tests where practical.
• bare-metal NVIDIA path only after upstream contracts are stable.