2026-06-14 — world-view zoom level

Continues 2026-06-13. Floor enrichment was shipped + verified live (library 0.1.10, broker 0.1.37, worlds 0.17.19, agent 0.12.43). Fritz picked the next phase: world-view zoom level (the deferred zoom level 2). Demo links in world-a/index.md kept (legitimate related-links footer; floor edges stay live).

World-view zoom BUILT (branch feature/world-view-zoom)

The floor one zoom in: a world's catalog as top-level directory clusters, each a labeled hub with its top-importance docs orbiting + a "+N more" aggregate that opens the dir's listing pane. SSR SVG (canvas island still unspent). Decision recorded in plans/reading-room.md §"World-view zoom level". Gate green (./pre-commit.sh). NOT committed (Fritz commits).

Load-bearing decision: world map = the floor kind u WITH a World set. No new pane kind — bare u = universe floor (unchanged); <world>/u/ = that world's map (the same component, one zoom in; ADR 0005 decision 4). Parallels <world>/d/ and <world>/g/<path> (trailing slash, empty value). paneAddrFromParts gains a u case; paneChunk emits u for World=="" and <world>/u/ otherwise. Single source of truth holds — both decoders share it.

Reached by: the floor's world cluster node now zooms to <world>/u/ (was <world>/d/ stacks). Stacks stay one click away via the world map's dir aggregates. Plus a margin "map" affordance (next to "graph") so the world view is reachable from any doc, not only the floor.

Architecture (hexagonal):

• domain.WorldMap{World, Clusters, Edges} + WorldCluster{Dir, Docs, More, ListPath}.
• service/worldmap.go: WorldMap/WorldMapCached (per-world cache mirroring floorCache; focused-live policy), worldClusters (group by top-level dir, root first then alpha; per-cluster top-N labeled, rest → More), topDir, intraWorldEdges (observed map ∪ hub graph, host→name joined, filtered to labeled nodes only — an edge can't point at an undrawn node). Catalog read is the page; world identity + edges are best-effort enrichment.
• Inbound port grows WorldMap/WorldMapCached.
• web/worldmap.go: WorldMapPage (permalink /w/:world/u), worldMapPaneView (trail-aware), worldMapSVG (grid of dir clusters, two-pass: positions → edges → nodes). Node hrefs continue the trail (doc → <world>/d/<path>, hub/aggregate → <world>/d/<dir>/ listing).
• Edges: the floor drops intra-world edges (worldEdges skips same-world); the world map is where they belong. Drawn only between two labeled nodes.

Tests: service (cluster grouping + aggregate, topDir, intraWorldEdges join/ filter, assemble+cache, best-effort enrichment); web (SVG nodes/edges/aggregate/ escape/empty, focused-live, permalink uses /w/ routes, error tombstone, trail round-trip for bare u + <world>/u/). Floor test updated (world node → <world>/u/).

Docs (decision 14): docs/trail-format.md updated with the <world>/u/ chunk. The in-universe trails.md twin updates at DEPLOY time (it describes live behavior) — same as last phase.

Files

• new: internal/core/service/worldmap.go (+_test), internal/adapter/inbound/ web/worldmap.go (+_test)
• edited: domain/document.go, core/port/port.go, core/service/reading.go; web/trail.go, trail_handlers.go, floor.go, reading_handlers.go, reading_routes.go, templates/content.html, templates/page.html; floor_test.go, trail_test.go, reading_handlers_test.go; docs/trail-format.md

Next (after Fritz + CodeRabbit)

1. Commit + PR; address review; merge → library auto-cut (will be 0.1.11).
2. Deploy: bump apps/demarkus-library applicationset.yaml targetRevision + image.tag to the new version. No broker/worlds/agent change (reader-only, reuses mark_worlds + lookup). DEMARKUS_HUB already = root.
3. Update in-universe mark://soul.demarkus.io/.well-known/library/trails.md with the <world>/u/ chunk (kept in sync with docs/trail-format.md).
4. Browser smoke at library.knowledge.demarkus.io: floor → click a world → world map renders (dir clusters + aggregates); a doc margin "map" link opens it; aggregate → listing pane.