Six more palettes, taking the picker to twelve

Catppuccin, Solarized, Ayu, Kanagawa, Everforest and Primer, each with the
light and dark variant its own project publishes: Latte and Mocha, Lotus
and Wave, and so on. Values were fetched from each project's own repository
and recorded in .palette-sources/palettes-upstream.md, with the two tiers
no project publishes marked derived rather than passed off as upstream.

Four candidates were rejected rather than adapted. Nord and Synthwave '84
publish no light variant, and inventing one is not porting a theme.
Monokai is proprietary and its licence forbids redistribution. Material
Theme has become a commercial product whose repository no longer publishes
a palette at all.

Body text is now lifted for contrast like every other text tone rather
than exempted and merely checked. Most of these palettes target their own
~4.5:1 for body text where ihasmail asks 7:1, so the old rule would have
rejected five of the six on a bar their designers never aimed at. Nudging
the published colour along its own hue is what the script already does for
muted text, links and accents, and every shift is printed in the generated
CSS: Solarized light moves 4.13 to 7.07, Primer needed nothing at all.

Primer is named for the design system, not for GitHub. The colour values
are MIT; the name and the logo are trademarks, and NOTICE says plainly
that nothing here is endorsed.

The picker grid already wrapped on its own, so twelve cards needed no
layout change.

scripts/build-palettes.py

@@ -163,6 +163,90 @@ SOURCES = {
             q1="#006c86", q2="#385f0d", q3="#65359d",
         ),
     },
+    "catppuccin": {
+        "dark": dict(  # Mocha
+            bg="#1e1e2e", elev="#313244", sunken="#181825", line="#45475a",
+            fg="#cdd6f4", muted="#a6adc8", accent="#cba6f7", link="#89b4fa",
+            danger="#f38ba8", warn="#fab387", success="#a6e3a1", star="#f9e2af",
+            q1="#89b4fa", q2="#a6e3a1", q3="#f5c2e7",
+        ),
+        "light": dict(  # Latte
+            bg="#e6e9ef", elev="#eff1f5", sunken="#dce0e8", line="#ccd0da",
+            fg="#4c4f69", muted="#6c6f85", accent="#8839ef", link="#1e66f5",
+            danger="#d20f39", warn="#fe640b", success="#40a02b", star="#df8e1d",
+            q1="#1e66f5", q2="#40a02b", q3="#ea76cb",
+        ),
+    },
+    "solarized": {
+        "dark": dict(
+            bg="#002b36", elev="#073642", sunken="#001f28", line="#0d4552",
+            fg="#839496", muted="#586e75", accent="#268bd2", link="#2aa198",
+            danger="#dc322f", warn="#cb4b16", success="#859900", star="#b58900",
+            q1="#2aa198", q2="#859900", q3="#6c71c4",
+        ),
+        "light": dict(
+            bg="#fdf6e3", elev="#fffdf6", sunken="#eee8d5", line="#e6dfc8",
+            fg="#657b83", muted="#93a1a1", accent="#268bd2", link="#2aa198",
+            danger="#dc322f", warn="#cb4b16", success="#859900", star="#b58900",
+            q1="#2aa198", q2="#859900", q3="#6c71c4",
+        ),
+    },
+    "ayu": {
+        "dark": dict(
+            bg="#0d1017", elev="#10141c", sunken="#070a0f", line="#1b1f29",
+            fg="#bfbdb6", muted="#5a6378", accent="#e6b450", link="#59c2ff",
+            danger="#f07178", warn="#ff8f40", success="#aad94c", star="#ffb454",
+            q1="#39bae6", q2="#aad94c", q3="#d2a6ff",
+        ),
+        "light": dict(
+            bg="#f8f9fa", elev="#fcfcfc", sunken="#ebeef0", line="#dfe2e5",
+            fg="#5c6166", muted="#828e9f", accent="#f29718", link="#22a4e6",
+            danger="#f07171", warn="#fa8532", success="#86b300", star="#eba400",
+            q1="#55b4d4", q2="#86b300", q3="#a37acc",
+        ),
+    },
+    "kanagawa": {
+        "dark": dict(  # Wave
+            bg="#1f1f28", elev="#2a2a37", sunken="#16161d", line="#363646",
+            fg="#dcd7ba", muted="#727169", accent="#7e9cd8", link="#7fb4ca",
+            danger="#e82424", warn="#ff9e3b", success="#98bb6c", star="#e6c384",
+            q1="#7fb4ca", q2="#98bb6c", q3="#d27e99",
+        ),
+        "light": dict(  # Lotus
+            bg="#e5ddb0", elev="#f2ecbc", sunken="#dcd5ac", line="#d5cea3",
+            fg="#545464", muted="#716e61", accent="#624c83", link="#4d699b",
+            danger="#c84053", warn="#cc6d00", success="#6f894e", star="#77713f",
+            q1="#4d699b", q2="#6f894e", q3="#b35b79",
+        ),
+    },
+    "everforest": {
+        "dark": dict(  # medium
+            bg="#2d353b", elev="#343f44", sunken="#232a2e", line="#475258",
+            fg="#d3c6aa", muted="#859289", accent="#a7c080", link="#7fbbb3",
+            danger="#e67e80", warn="#e69875", success="#a7c080", star="#dbbc7f",
+            q1="#7fbbb3", q2="#a7c080", q3="#d699b6",
+        ),
+        "light": dict(  # medium
+            bg="#efebd4", elev="#fdf6e3", sunken="#e6e2cc", line="#bdc3af",
+            fg="#5c6a72", muted="#939f91", accent="#8da101", link="#3a94c5",
+            danger="#f85552", warn="#f57d26", success="#8da101", star="#dfa000",
+            q1="#3a94c5", q2="#8da101", q3="#df69ba",
+        ),
+    },
+    "primer": {
+        "dark": dict(
+            bg="#0d1117", elev="#151b23", sunken="#010409", line="#3d444d",
+            fg="#f0f6fc", muted="#9198a1", accent="#58a6ff", link="#79c0ff",
+            danger="#ff7b72", warn="#e3b341", success="#3fb950", star="#d29922",
+            q1="#79c0ff", q2="#56d364", q3="#d2a8ff",
+        ),
+        "light": dict(
+            bg="#f6f8fa", elev="#ffffff", sunken="#eff2f5", line="#d1d9e0",
+            fg="#25292e", muted="#59636e", accent="#0969da", link="#0550ae",
+            danger="#cf222e", warn="#9a6700", success="#1a7f37", star="#bf8700",
+            q1="#0550ae", q2="#116329", q3="#8250df",
+        ),
+    },
 }
 
 # What each token has to clear, and against which surface. Normal text is 4.5;
@@ -183,6 +267,15 @@ def build(pid: str, mode: str, src: dict[str, str]) -> tuple[dict[str, str], lis
             notes.append(f"{name} {colour} -> {out} ({contrast(colour, bg):.2f} -> {contrast(out, bg):.2f})")
         return out
 
+    # Body text is lifted like every other text tone rather than exempted.
+    # Most of these palettes publish a body colour around 4.5:1 -- their own
+    # target -- and ihasmail asks 7:1 of the text a reader looks at all day.
+    # Rejecting a palette over that would have cost five of the six added in
+    # 2026-09; nudging the published colour along its own hue costs nothing a
+    # reader can name, and the shift is recorded in the header of the
+    # generated block like every other one.
+    fg = lift("fg", fg, TEXT_ON_BG["fg"])
+
     muted = lift("muted", src["muted"], TEXT_ON_BG["muted"])
     # Between muted and the background, but still readable: this is timestamps
     # and counts, which are small and still prose.