feat: Integrar zcatttf para renderizado TTF

- build.zig.zon: Añadir zcatttf como dependencia local
- build.zig: Importar módulo zcatttf en todos los targets
- ttf.zig: Reescribir como wrapper de zcatttf (991→561 LOC)

Cambios en ttf.zig:
- Usa zcatttf.Font para parsing y rasterización
- Mantiene API pública compatible (TtfFont, drawText, etc.)
- Añade soporte UTF-8 completo en drawText
- Elimina código de rasterización propio (buggy)

Eliminado:
- cmap_debug.zig del build (herramienta de diagnóstico obsoleta)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

build.zig

@@ -7,6 +7,15 @@ pub fn build(b: *std.Build) void {
     // Check if building for WASM
     const is_wasm = target.result.cpu.arch == .wasm32 or target.result.cpu.arch == .wasm64;
 
+    // ===========================================
+    // Dependencies
+    // ===========================================
+    const zcatttf_dep = b.dependency("zcatttf", .{
+        .target = target,
+        .optimize = optimize,
+    });
+    const zcatttf_mod = zcatttf_dep.module("zcatttf");
+
     // ===========================================
     // Main library module
     // ===========================================
@@ -15,6 +24,9 @@ pub fn build(b: *std.Build) void {
         .target = target,
         .optimize = optimize,
         .link_libc = !is_wasm,
+        .imports = &.{
+            .{ .name = "zcatttf", .module = zcatttf_mod },
+        },
     });
 
     // Link SDL2 to the module (only for native builds)
@@ -31,6 +43,9 @@ pub fn build(b: *std.Build) void {
             .target = target,
             .optimize = optimize,
             .link_libc = true,
+            .imports = &.{
+                .{ .name = "zcatttf", .module = zcatttf_mod },
+            },
         }),
     });
     lib_unit_tests.root_module.linkSystemLibrary("SDL2", .{});
@@ -127,31 +142,6 @@ pub fn build(b: *std.Build) void {
     const table_step = b.step("table-demo", "Run table demo with split panels");
     table_step.dependOn(&run_table.step);
 
-    // ===========================================
-    // Debug tools
-    // ===========================================
-
-    // cmap debug - TTF font table diagnostics
-    const cmap_debug_exe = b.addExecutable(.{
-        .name = "cmap-debug",
-        .root_module = b.createModule(.{
-            .root_source_file = b.path("src/render/cmap_debug.zig"),
-            .target = target,
-            .optimize = optimize,
-            .link_libc = true,
-            .imports = &.{
-                .{ .name = "zcatgui", .module = zcatgui_mod },
-            },
-        }),
-    });
-    cmap_debug_exe.root_module.linkSystemLibrary("SDL2", .{});
-    b.installArtifact(cmap_debug_exe);
-
-    const run_cmap_debug = b.addRunArtifact(cmap_debug_exe);
-    run_cmap_debug.step.dependOn(b.getInstallStep());
-    const cmap_debug_step = b.step("cmap-debug", "Run TTF cmap diagnostics");
-    cmap_debug_step.dependOn(&run_cmap_debug.step);
-
     // ===========================================
     // WASM Build
     // ===========================================
@@ -162,10 +152,20 @@ pub fn build(b: *std.Build) void {
         .os_tag = .freestanding,
     });
 
+    // zcatttf for WASM
+    const zcatttf_wasm_dep = b.dependency("zcatttf", .{
+        .target = wasm_target,
+        .optimize = .ReleaseSmall,
+    });
+    const zcatttf_wasm_mod = zcatttf_wasm_dep.module("zcatttf");
+
     const zcatgui_wasm_mod = b.createModule(.{
         .root_source_file = b.path("src/zcatgui.zig"),
         .target = wasm_target,
         .optimize = .ReleaseSmall,
+        .imports = &.{
+            .{ .name = "zcatttf", .module = zcatttf_wasm_mod },
+        },
     });
 
     // WASM demo executable
@@ -205,11 +205,21 @@ pub fn build(b: *std.Build) void {
         .abi = .android,
     });
 
+    // zcatttf for Android ARM64
+    const zcatttf_android_dep = b.dependency("zcatttf", .{
+        .target = android_target,
+        .optimize = .ReleaseSafe,
+    });
+    const zcatttf_android_mod = zcatttf_android_dep.module("zcatttf");
+
     const zcatgui_android_mod = b.createModule(.{
         .root_source_file = b.path("src/zcatgui.zig"),
         .target = android_target,
         .optimize = .ReleaseSafe,
         .link_libc = true,
+        .imports = &.{
+            .{ .name = "zcatttf", .module = zcatttf_android_mod },
+        },
     });
 
     // Android demo shared library
@@ -249,11 +259,21 @@ pub fn build(b: *std.Build) void {
         .abi = .android,
     });
 
+    // zcatttf for Android x86_64
+    const zcatttf_android_x86_dep = b.dependency("zcatttf", .{
+        .target = android_x86_target,
+        .optimize = .ReleaseSafe,
+    });
+    const zcatttf_android_x86_mod = zcatttf_android_x86_dep.module("zcatttf");
+
     const zcatgui_android_x86_mod = b.createModule(.{
         .root_source_file = b.path("src/zcatgui.zig"),
         .target = android_x86_target,
         .optimize = .ReleaseSafe,
         .link_libc = true,
+        .imports = &.{
+            .{ .name = "zcatttf", .module = zcatttf_android_x86_mod },
+        },
     });
 
     const android_demo_x86_mod = b.createModule(.{
@@ -293,11 +313,21 @@ pub fn build(b: *std.Build) void {
         .os_tag = .ios,
     });
 
+    // zcatttf for iOS
+    const zcatttf_ios_dep = b.dependency("zcatttf", .{
+        .target = ios_target,
+        .optimize = .ReleaseSafe,
+    });
+    const zcatttf_ios_mod = zcatttf_ios_dep.module("zcatttf");
+
     const zcatgui_ios_mod = b.createModule(.{
         .root_source_file = b.path("src/zcatgui.zig"),
         .target = ios_target,
         .optimize = .ReleaseSafe,
         .link_libc = true,
+        .imports = &.{
+            .{ .name = "zcatttf", .module = zcatttf_ios_mod },
+        },
     });
 
     // iOS static library (object file that can be linked into iOS app)
@@ -323,11 +353,21 @@ pub fn build(b: *std.Build) void {
         .abi = .simulator,
     });
 
+    // zcatttf for iOS Simulator
+    const zcatttf_ios_sim_dep = b.dependency("zcatttf", .{
+        .target = ios_sim_target,
+        .optimize = .ReleaseSafe,
+    });
+    const zcatttf_ios_sim_mod = zcatttf_ios_sim_dep.module("zcatttf");
+
     const zcatgui_ios_sim_mod = b.createModule(.{
         .root_source_file = b.path("src/zcatgui.zig"),
         .target = ios_sim_target,
         .optimize = .ReleaseSafe,
         .link_libc = true,
+        .imports = &.{
+            .{ .name = "zcatttf", .module = zcatttf_ios_sim_mod },
+        },
     });
 
     const ios_sim_lib = b.addExecutable(.{

build.zig.zon

@@ -4,7 +4,11 @@
     .version = "0.1.0",
     .minimum_zig_version = "0.15.0",
 
-    .dependencies = .{},
+    .dependencies = .{
+        .zcatttf = .{
+            .path = "../zcatttf",
+        },
+    },
 
     .paths = .{
         "build.zig",