docs(api): per-symbol pages, fuzzy search, deep token linking, hover cards

Rebuild the API Reference around one page per symbol and richer, verified content.

Pages & navigation
- One HTML page per symbol (kw-*, type-*, phase-*, screen-*, fn-*, annot-*, op-*)
  instead of a single scrolling page; namespace overview pages (ns-screen …
  ns-color) and a searchable index (api.html) with client-side fuzzy search.
- Sticky-header scroll offset (scroll-margin) so a jumped-to entry/param/color is
  never hidden, plus a flash highlight on the scrolled-to target.

Deep linking in every snippet & example
- Namespace members split: `Screen`→namespace page, `fill_rectangle`→method page;
  `Color`→palette page, `Charcoal`→its swatch — separately.
- Named arguments (`width:`) link to that parameter's anchor on the method page.
- Hover any token for a summary card built from the real API data (symbols.json).

Content & coverage
- Full authoritative surface documented from the compiler: every keyword, type,
  the 6 phases (Start/Input/FixedUpdate/Update/LateUpdate/Render, each its own
  page), all 22 annotations, namespace methods with parameter docs, builtins,
  the world_* reflection ABI, networking, operators — 155 symbols.
- Longer, clearer explanations; "model"/"model instance" terminology, not "entity";
  descriptive identifiers in every example (Position{column,row}, Velocity{delta_x,
  delta_y}, Health{current,maximum}, Player/Enemy) — no Pos/Seg/x/dx.
- Accuracy fixes from compiler ground-truth: world_count() takes no arg,
  world_query_next(property, cursor) arg order, event fields bind by name; dropped
  `when` and `module` (not in the self-hosted parser).

Tooling
- inventory.json + check.py: coverage guard (every symbol has a page), duplicate-
  token guard, and broken-link guard — fail CI so docs can't drift.
- validate.py: compiles every ```ludic example against bin/ludicc (158 compile).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

docs/language/map/map-size.md

@@ -5,8 +5,47 @@ category: map
 kind: namespace-method
 tokens: Map.size
 sig: Map.size(width, height)
-tip: Set the tilemap dimensions in cells.
+tip: Set the tilemap dimensions in cells before filling rows.
 order: 0
+ns: Map
+member: size
 ---
 
-Set the tilemap dimensions in cells.
+Declares the dimensions of the built-in tilemap, in cells (not pixels). Call it once during a <code>Start</code>-phase handler before you fill the map with <code>Map.row</code>, so the runtime knows how many columns and rows to allocate. The tilemap is a lightweight, character-based grid the whole program can read with <code>Map.tile</code>, which is handy for static level geometry such as walls and floors. Reads outside these bounds are treated as a wall character, so the edge of the world is solid for free.
+
+Parameters:
+- `width` — the map width in cells (columns)
+- `height` — the map height in cells (rows)
+
+```ludic
+program LevelBounds {
+  const GRID_WIDTH: int = 12
+  const GRID_HEIGHT: int = 4
+  const TILE_SIZE: int = 16
+
+  handler BuildLevel phase Start {
+    Map.size(width: GRID_WIDTH, height: GRID_HEIGHT)
+    Map.row(y: 0, cells: "############")
+    Map.row(y: 1, cells: "#..........#")
+    Map.row(y: 2, cells: "#..........#")
+    Map.row(y: 3, cells: "############")
+  }
+
+  handler DrawWorld phase Render {
+    Screen.clear(Color.MidnightBlue)
+    for row in 0 .. GRID_HEIGHT {
+      for column in 0 .. GRID_WIDTH {
+        if Map.tile(x: column, y: row) == '#' {
+          Screen.fill_rectangle(
+            x: column * TILE_SIZE,
+            y: row * TILE_SIZE,
+            width: TILE_SIZE,
+            height: TILE_SIZE,
+            color: Color.White)
+        }
+      }
+    }
+    Screen.show()
+  }
+}
+```