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/operators/op-literals.md

@@ -4,8 +4,15 @@ name: Literals
 category: operators
 kind: operator
 sig: 42   0x1E90FF   'w'   "text"   true   null
-tip: Decimal and hex ints (hex is how colors are written), a character code in single quotes, a string in double quotes, booleans, and the null pointer.
+tip: Integer, hex, character, string, boolean, and null-pointer literals.
 order: 8
 ---
 
-Decimal and hex ints (hex is how colors are written), a character code in single quotes, a string in double quotes, booleans, and the null pointer.
+Literals are the fixed values you write directly in source. `42` is a decimal `int` and `0x1E90FF` is a hex `int` — hex is how colors are written, so a raw color is just an integer. A number with a decimal point (`1.5`) is a `fixed`. `'w'` is a character literal, an `int` code point handy for comparing against `Input.key()`. `"text"` is a `str`, `true` / `false` are `bool`s, and `null` is the null-pointer literal used to test an unset record, slice, or `ptr` field.
+
+```ludic
+let sky_color: int = 0x1E90FF
+let banner: str = "GAME OVER"
+if Input.key() == 'w' { row = row - 1 }
+if next_segment == null { is_tail = true }
+```