task 9: self-host nukem Web437 font

6 files changed, 92 insertions, 18 deletions

diff --git a/README.md b/README.md
index 11d5e7c..98f47ee 100644
--- a/README.md
+++ b/README.md
@@ -132,6 +132,10 @@ Bundled web fonts:
   [Ultimate Oldschool PC Font Pack v2.2](https://int10h.org/oldschool-pc-fonts/),
   [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).
   See [internal/generator/templates/themes/dos/FONT_LICENSE.txt](internal/generator/templates/themes/dos/FONT_LICENSE.txt).
+- **nukem** — *Web437 IBM VGA 8x16* (.woff) by VileR, from the
+  [Ultimate Oldschool PC Font Pack v2.2](https://int10h.org/oldschool-pc-fonts/),
+  [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/).
+  See [internal/generator/templates/themes/nukem/FONT_LICENSE.txt](internal/generator/templates/themes/nukem/FONT_LICENSE.txt).
 - **biomech** — *Oxanium* Regular + Bold (.woff2, latin+latin-ext) by
   Tyler Finck, from [Google Fonts](https://fonts.google.com/specimen/Oxanium),
   [SIL OFL 1.1](https://openfontlicense.org/open-font-license-official-text/).
diff --git a/integrationtests/integration_test.go b/integrationtests/integration_test.go
index 3b7e4ea..cb1553f 100644
--- a/integrationtests/integration_test.go
+++ b/integrationtests/integration_test.go
@@ -460,6 +460,7 @@ func TestThemeSelection(t *testing.T) {
 			fontAssets := map[string][]string{
 				"matrix": {"VT323-Regular.woff2", "FONT_LICENSE.txt"},
 				"retro":  {"VT323-Regular.woff2", "FONT_LICENSE.txt"},
+				"nukem":  {"Web437_IBM_VGA_8x16.woff", "FONT_LICENSE.txt"},
 				"retrofuture": {
 					"FONT_LICENSE.txt",
 					"orbitron-v35-latin_latin-ext-700.woff2",
@@ -475,6 +476,7 @@ func TestThemeSelection(t *testing.T) {
 			fontURLs := map[string][]string{
 				"matrix": {"url('VT323-Regular.woff2')"},
 				"retro":  {"url('VT323-Regular.woff2')"},
+				"nukem":  {"url('Web437_IBM_VGA_8x16.woff')"},
 				"retrofuture": {
 					"url('orbitron-v35-latin_latin-ext-700.woff2')",
 					"url('orbitron-v35-latin_latin-ext-regular.woff2')",
diff --git a/internal/generator/generator_test.go b/internal/generator/generator_test.go
index 62b3593..7e2742b 100644
--- a/internal/generator/generator_test.go
+++ b/internal/generator/generator_test.go
@@ -446,6 +446,32 @@ func TestRun_writesPagesAndAtom(t *testing.T) {
 func TestRun_writesVolcanoFontAssets(t *testing.T) {
 	t.Parallel()
 
+	testRunWritesThemeFontAssets(t, "volcano", []string{
+		"bebas-neue-v16-latin_latin-ext-regular.woff2",
+		"inter-v20-latin_latin-ext-regular.woff2",
+		"inter-v20-latin_latin-ext-600.woff2",
+		"FONT_LICENSE.txt",
+	}, []string{
+		"url('bebas-neue-v16-latin_latin-ext-regular.woff2')",
+		"url('inter-v20-latin_latin-ext-regular.woff2')",
+		"url('inter-v20-latin_latin-ext-600.woff2')",
+	})
+}
+
+func TestRun_writesNukemFontAssets(t *testing.T) {
+	t.Parallel()
+
+	testRunWritesThemeFontAssets(t, "nukem", []string{
+		"Web437_IBM_VGA_8x16.woff",
+		"FONT_LICENSE.txt",
+	}, []string{
+		"url('Web437_IBM_VGA_8x16.woff')",
+	})
+}
+
+func testRunWritesThemeFontAssets(t *testing.T, theme string, assets, localURLs []string) {
+	t.Helper()
+
 	out := t.TempDir()
 	postDir := filepath.Join(out, "posts", "a1")
 	if err := os.MkdirAll(postDir, 0o755); err != nil {
@@ -464,19 +490,14 @@ func TestRun_writesVolcanoFontAssets(t *testing.T) {
 	cfg := &config.Config{
 		OutputDir: out,
 		BaseURL:   "https://example.test",
-		Theme:     "volcano",
+		Theme:     theme,
 	}
 	if err := Run(ctx, cfg); err != nil {
 		t.Fatalf("Run: %v", err)
 	}
 
-	themeDir := filepath.Join(out, "themes", "volcano")
-	for _, name := range []string{
-		"bebas-neue-v16-latin_latin-ext-regular.woff2",
-		"inter-v20-latin_latin-ext-regular.woff2",
-		"inter-v20-latin_latin-ext-600.woff2",
-		"FONT_LICENSE.txt",
-	} {
+	themeDir := filepath.Join(out, "themes", theme)
+	for _, name := range assets {
 		info, err := os.Stat(filepath.Join(themeDir, name))
 		if err != nil {
 			t.Fatalf("%s: %v", name, err)
@@ -488,21 +509,17 @@ func TestRun_writesVolcanoFontAssets(t *testing.T) {
 
 	css, err := os.ReadFile(filepath.Join(themeDir, "theme.css"))
 	if err != nil {
-		t.Fatalf("read volcano theme.css: %v", err)
+		t.Fatalf("read %s theme.css: %v", theme, err)
 	}
 	got := string(css)
-	for _, localFont := range []string{
-		"url('bebas-neue-v16-latin_latin-ext-regular.woff2')",
-		"url('inter-v20-latin_latin-ext-regular.woff2')",
-		"url('inter-v20-latin_latin-ext-600.woff2')",
-	} {
+	for _, localFont := range localURLs {
 		if !strings.Contains(got, localFont) {
-			t.Fatalf("volcano theme.css missing local font reference %q", localFont)
+			t.Fatalf("%s theme.css missing local font reference %q", theme, localFont)
 		}
 	}
 	for _, forbidden := range []string{"googleapis", "gstatic", "fonts.cdn", "@import url(http"} {
 		if strings.Contains(got, forbidden) {
-			t.Fatalf("volcano theme.css contains forbidden external font reference %q", forbidden)
+			t.Fatalf("%s theme.css contains forbidden external font reference %q", theme, forbidden)
 		}
 	}
 }
diff --git a/internal/generator/templates/themes/nukem/FONT_LICENSE.txt b/internal/generator/templates/themes/nukem/FONT_LICENSE.txt
new file mode 100644
index 0000000..9ee0193
--- /dev/null
+++ b/internal/generator/templates/themes/nukem/FONT_LICENSE.txt
@@ -0,0 +1,41 @@
+Web437 IBM VGA 8x16
+===================
+
+This directory bundles the web font:
+
+    Web437_IBM_VGA_8x16.woff
+
+It is taken from "The Ultimate Oldschool PC Font Pack" v2.2 by VileR
+(https://int10h.org/oldschool-pc-fonts/) and is used here unmodified.
+
+Source archive:
+
+    https://int10h.org/oldschool-pc-fonts/download/oldschool_pc_font_pack_v2.2_web.zip
+
+Source file in archive:
+
+    woff - Web (webfonts)/Web437_IBM_VGA_8x16.woff
+
+Version/date:
+
+    Ultimate Oldschool PC Font Pack v2.2, archive file timestamp 2020-11-21.
+    Downloaded for this repository on 2026-05-01.
+
+The font pack - including this file - is licensed under the Creative
+Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0).
+
+  - License summary: https://creativecommons.org/licenses/by-sa/4.0/
+  - Full license text: https://creativecommons.org/licenses/by-sa/4.0/legalcode
+  - Project page:    https://int10h.org/oldschool-pc-fonts/
+  - Readme & terms:  https://int10h.org/oldschool-pc-fonts/readme/
+
+Required attribution
+--------------------
+Font: "Web437 IBM VGA 8x16" from the Ultimate Oldschool PC Font Pack
+      by VileR - https://int10h.org/oldschool-pc-fonts/
+      Licensed under CC BY-SA 4.0.
+
+Because this work is distributed under CC BY-SA 4.0, any modified version
+of the font itself (not the surrounding snonux code) must be released
+under the same license. Embedding/serving the font as part of a web
+page is not considered a derivative work of the font.
diff --git a/internal/generator/templates/themes/nukem/Web437_IBM_VGA_8x16.woff b/internal/generator/templates/themes/nukem/Web437_IBM_VGA_8x16.woff
new file mode 100644
index 0000000..1f1508d
--- /dev/null
+++ b/internal/generator/templates/themes/nukem/Web437_IBM_VGA_8x16.woff
diff --git a/internal/generator/templates/themes/nukem/theme.css b/internal/generator/templates/themes/nukem/theme.css
index 060cd08..e780cb8 100644
--- a/internal/generator/templates/themes/nukem/theme.css
+++ b/internal/generator/templates/themes/nukem/theme.css
@@ -1,8 +1,18 @@
+        /* Bundled bitmap font: "Web437 IBM VGA 8x16" by VileR
+           (https://int10h.org/oldschool-pc-fonts/), used unmodified under
+           CC BY-SA 4.0. See FONT_LICENSE.txt in this directory. */
+        @font-face {
+            font-family: 'Web437 IBM VGA 8x16';
+            src: url('Web437_IBM_VGA_8x16.woff') format('woff');
+            font-weight: normal;
+            font-style: normal;
+            font-display: swap;
+        }
         :root { --duke-red:#ff0000; --duke-gold:#ffd700; --duke-grey:#3a3a3a;
                 --duke-bg:#0a0a0a; --duke-dark:#111111; --duke-yellow:#ffcc00;
                 --duke-blood:#cc0000; --duke-light:#e0e0e0; }
         * { margin:0; padding:0; box-sizing:border-box; }
-        body { font-family:'Courier New',monospace; background:var(--duke-bg);
+        body { font-family:'Web437 IBM VGA 8x16','Courier New',monospace; background:var(--duke-bg);
                color:var(--duke-light); overflow:hidden; height:100vh; height:100dvh; font-size:18px; }
         #three-canvas { position:fixed; top:0; left:0; width:100%; height:100%; z-index:1; }
         .overlay { position:relative; z-index:10; height:100vh; height:100dvh; display:flex; flex-direction:column; }
@@ -64,7 +74,7 @@
                        border:3px solid var(--duke-red); padding:28px;
                        box-shadow:0 0 40px rgba(255,0,0,0.35); }
         .modal-close { float:right; background:var(--duke-red); border:none;
-                       color:var(--duke-gold); font-family:'Courier New',monospace;
+                       color:var(--duke-gold); font-family:'Web437 IBM VGA 8x16','Courier New',monospace;
                        font-size:1rem; font-weight:bold; cursor:pointer; padding:4px 10px;
                        text-transform:uppercase; letter-spacing:1px; }
         .modal-close:hover { background:var(--duke-gold); color:var(--duke-bg);