feat(terminal): Kitty only — drop Ghostty (#95)

Ghostty's OpenGL 4.3 floor broke the Acer (HD 4000 / 4.2). Dual-terminal
support (default Ghostty + install-time Kitty fallback) was more complexity
than it was worth.

- Remove ghostty.nix / nomarchy.ghostty.enable
- Kitty always installed and themed from theme-state
- Default nomarchy.terminal = kitty; SUPER+Return, doctor, calendar,
  what-changed use kitty --class=com.nomarchy.*
- Drop install-time glxinfo probe and mesa-demos on the installer
- Docs/REQUIREMENTS no longer list OpenGL 4.3 as a terminal floor

Verified: V0 flake check; option-docs; installer-safety; template HM has
kitty, no ghostty; menu/calendar emit classed kitty launches.

agent/BACKLOG.md

@@ -27,9 +27,9 @@ in [`docs/ROADMAP.md`](../docs/ROADMAP.md); map in
 ### Live ISO / install hardware findings — Acer Aspire M5-481T + Dell XPS 9350
 
 Bernardo, real installs 2026-07-13–14 (photos of the install end screens and
-post-boot sessions). Preserve separation: the installer bake failure, the
-flake pin, and the Ghostty GL floor are different root causes even when they
-show up on the same machine.
+post-boot sessions). Preserve separation: the installer bake failure and the
+flake pin are different root causes even when they show up on the same machine.
+(Terminal / Ghostty-on-Acer → shipped as Kitty-only, #95.)
 
 ### 123. Installer HM pre-activate aborts on dconf / missing XDG_RUNTIME_DIR
 
@@ -144,26 +144,6 @@ template source. Pass = Chromium launches after installation and HTTP/HTTPS
 mime defaults resolve to `chromium-browser.desktop` (and the intended live-ISO
 browser posture is explicit).
 
-### 95. Live ISO/install: Ghostty does not open on Acer (old GL) — **install fallback shipped**
-
-**Machine:** Acer Aspire M5-481T only (Intel HD 4000, OpenGL **4.2**). XPS
-starts Ghostty fine. Generation ceiling documented in `docs/REQUIREMENTS.md`.
-
-**Shipped (this iteration):** installer probes `glxinfo`; if OpenGL < 4.3,
-writes `settings.terminal = "kitty"` into theme-state. `modules/home/kitty.nix`
-installs and **themes** Kitty from the same palette/font/opacity as Ghostty.
-Default HM keeps Ghostty only (no kitty package). Manual override:
-`settings.terminal = "kitty"` or `nomarchy.terminal = "kitty"`.
-
-**Still open:**
-- **V3** on the Acer: fresh install (or hand-set terminal + `nomarchy-home`)
-  → SUPER+Return opens themed Kitty; Ghostty may still fail if launched by
-  name (expected).
-- Doctor / calendar classed windows still hardcode `ghostty` — may fail on
-  the same GL floor (separate small follow-up if they matter on old HW).
-- Live ISO session on HD 4000 still defaults to Ghostty until install (or a
-  live-side probe).
-
 ### 98. Boreal: button text renders black and is difficult to read
 
 Audit GTK button foreground/background contrast under Boreal, including the
@@ -222,7 +202,7 @@ a staircase.
 a real Nomarchy machine.** Chase the *fallback*, not one font's charset; this
 was got wrong twice while filing, both times by checking a single font:
 
-- The mono face is **per theme** (`ghostty.nix:22` → `t.fonts.mono` from the
+- The mono face is **per theme** (`kitty.nix` → `t.fonts.mono` from the
   theme JSON), not stylix's default. **Boreal — the default theme and the base
   state — is `GeistMono Nerd Font`**; the other 23 themes are `JetBrainsMono
   Nerd Font`. Any answer must hold for both.

agent/GOALS.md

@@ -22,7 +22,7 @@ confidence, default identity, release bar) live in
    ergonomic writer for the flake. Where a toggle can take effect without a
    rebuild, it must (`--no-switch` + flip the running service).
 4. **Beautiful.** One JSON themes the entire desktop coherently — Hyprland,
-   Waybar, Ghostty, btop, rofi, GTK/Qt, boot splash, greeter. Every new
+   Waybar, Kitty, btop, rofi, GTK/Qt, boot splash, greeter. Every new
    surface follows the palette. Informative, self-gating Waybar modules
    (they hide when irrelevant). No unthemed corner survives contact with
    the theme switcher.

agent/HARDWARE-QUEUE.md

@@ -436,12 +436,9 @@ the **T14s** (webcam case).
       **without** running `home-manager switch` by hand. **Fail** = still
       need the recovery one-liner, or GTK/nm-applet still wrong until a
       manual switch (then the bake is still incomplete).
-- [ ] **#95 themed Kitty fallback on Acer M5-481T** — after install from an
-      ISO that probes GL < 4.3 (or set `settings.terminal = "kitty"` +
-      `nomarchy-home`): SUPER+Return opens **Kitty** with Boreal (or current
-      theme) colors/font — not unthemed stock. `theme-state.json` should
-      show `"terminal": "kitty"`. Ghostty may still refuse if launched by
-      name (expected on HD 4000). XPS / modern-GL machines keep Ghostty.
+- [ ] **#95 Kitty-only terminal on Acer M5-481T** — after rebuild/install
+      from main: SUPER+Return opens **themed Kitty**; System › Doctor opens
+      a floating classed Kitty window. No Ghostty on PATH required.
 - [ ] **#124 flake pin after main-ISO install** — on a machine installed
       from a **main-built** ISO (post-fix): `~/.nomarchy/flake.nix`
       nomarchy input must not re-resolve to a lagging `v1` that lacks

agent/JOURNAL.md

@@ -19,7 +19,19 @@ Template:
 
 ---
 
-## 2026-07-15 — #95: themed Kitty when OpenGL < 4.3 (this commit)
+## 2026-07-15 — #95 complete: Kitty is the only terminal (this commit)
+- **Task:** Bernardo: make kitty default and only option — drop dual-terminal
+  complexity (Ghostty failed on Acer OpenGL 4.2; fallback was more code).
+- **Did:** Removed `ghostty.nix` and `nomarchy.ghostty.enable`. Kitty always
+  installed + themed; default `nomarchy.terminal = "kitty"`. Doctor, calendar,
+  what-changed → `kitty --class=com.nomarchy.*`. Dropped install-time GL
+  probe + mesa-demos. Updated README/REQUIREMENTS/OVERRIDES/TESTING/tools.
+- **Verified:** V0 flake check; downstream-template-home builds with kitty,
+  no ghostty; installer-safety green.
+- **Pending:** V3 Acer SUPER+Return + doctor float (HARDWARE-QUEUE).
+- **Next suggestion:** #123 (HM pre-activate dconf).
+
+## 2026-07-15 — #95: themed Kitty when OpenGL < 4.3 (superseded above)
 - **Task:** Bernardo: when GL &lt; 4.3 automatically add kitty — and theme it.
 - **Did:** `modules/home/kitty.nix` themes Kitty from theme-state (same
   palette/font/opacity as Ghostty); enables when `nomarchy.terminal` is

agent/MEMORY.md

@@ -10,14 +10,12 @@ iteration would otherwise rediscover.
 - **Doctor float V2:** `THEME=<slug> nix build --impure -f tools/doctor-float.nix`
   — softGL Hyprland, `nomarchy-menu doctor`, asserts
   `class=com.nomarchy.doctor` + `floating` + centered midpoints +
-  screenshots. Ghostty *does* start here under softGL (classed one-shot);
-  size often stays Ghostty’s default 800×600 (client geometry wins over
-  the percent `size` windowrule).
-- **theme-shot softGL cannot start Ghostty** — `btop.png` is best-effort
+  screenshots (Kitty `--class=…`). SoftGL may still struggle with a GPU
+  terminal; size can ignore percent windowrules if client geometry wins.
+- **theme-shot softGL may not start Kitty** — `btop.png` is best-effort
   (usually identical to desktop). Guest asserts on
   `~/.config/btop/themes/nomarchy.theme` prove baking; the TUI look is
-  hardware/GL tier (HARDWARE-QUEUE). Doctor float is the counter-example
-  that a *classed* one-shot Ghostty can still map under softGL.
+  hardware/GL tier (HARDWARE-QUEUE).
 - **Waybar `custom/doctor` tripwire:** status helper must invoke
   `nomarchy-doctor` by **absolute store path** (waybar's env can miss
   system PATH → `command -v … || exit 0` self-hides forever); empty
@@ -85,9 +83,9 @@ iteration would otherwise rediscover.
   (`LIBGL_ALWAYS_SOFTWARE` on virtio-gpu) + `machine.screenshot()` QMP
   dump — prototyped 2026-06-19, kept as the fallback for theme previews
   (§ Visual theme picker).
-- Hyprland/Ghostty need guest GL (`virtio-vga-gl`, `gl=on`) in
-  interactive QEMU or the session won't start; black screen ≈ missing GL
-  (docs/TESTING.md § gotchas).
+- Hyprland needs guest GL (`virtio-vga-gl`, `gl=on`) in interactive QEMU
+  or the session won't start; black screen ≈ missing GL
+  (docs/TESTING.md § gotchas). Kitty is the sole terminal (no Ghostty).
 - No KVM = slow, not broken; don't read slowness as failure.
 
 ## Known-broken / watchlist

agent/THEME-DESIGN.md

@@ -20,7 +20,7 @@ consumes the palette from the state JSON, never a side file.
 ## Design responsibilities
 
 1. **Holistic design:** a theme spans Hyprland (borders, shadows,
-   animations), Waybar, Ghostty, btop, fastfetch, rofi, and wallpaper —
+   animations), Waybar, Kitty, btop, fastfetch, rofi, and wallpaper —
    one coherent identity, no unthemed corner.
 2. **Color theory:** create or adapt advanced palettes. Draw inspiration
    from established aesthetics (Everforest, Nord, Gruvbox) or r/unixporn