fix(hyprland): migrate window rules to Hyprland 0.53+ syntax

The default desktop showed a red Hyprland config-error banner on every
boot, occluding the Waybar. Root cause: Hyprland 0.53 rewrote window
rules — the `windowrulev2` keyword is a hard error and the old
rule-first order (`float, class:^…$`) no longer parses, so the float
rules were not applying either. Confirmed against the Hyprland 0.55.4
source (`handleWindowrule`): each comma field is now `<keyword> <value>`,
so effects carry a value and matchers take a `match:` prefix.

Migrated the 7-rule block to `float 1, match:class ^…$` form.

Verified: V0 nix flake check --no-build; built the generated
hyprland.conf; V2 theme-shot re-render — banner gone, themed Waybar
renders. Journal + MEMORY gotcha added.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

agent/JOURNAL.md

@@ -17,6 +17,23 @@ Template:
 
 ---
 
+## 2026-07-09 — Fix Hyprland windowrule config-error banner (windowrule 0.53 migration)
+- **Task:** bug tripped over while doing #45 (VM Boreal verify) — the default
+  desktop showed a red Hyprland config-error banner on every boot, occluding
+  the Waybar.
+- **Did:** Root-caused via the theme-shot harness + Hyprland 0.55.4 source
+  (`handleWindowrule`): Hyprland 0.53 rewrote window rules — `windowrulev2` is a
+  hard error and the old rule-first `float, class:^…$` order no longer parses
+  (so the float rules weren't even applying). Migrated the 7-rule block in
+  `modules/home/hyprland.nix` to the new hyprlang grammar `<effect> <value>,
+  match:<prop> ^…$` (e.g. `float 1, match:class ^…$`).
+- **Verified:** V0 `nix flake check --no-build` green; built the generated
+  `hyprland.conf` and confirmed emitted lines; **V2** theme-shot re-render —
+  banner gone, themed Waybar now renders (violet accent, GeistMono clock).
+- **Pending:** none for the fix. A cheap `checks.*` that greps the generated
+  conf for the dead rule-first pattern could lock it (PROPOSED).
+- **Next suggestion:** finish #45 (capture boreal preview.png), then #46.
+
 ## 2026-07-09 — Default theme → Boreal (item #42)
 - **Task:** NEXT #42 — distro default theme Tokyo Night → Boreal (`VISION § B` / v1.0 bar).
 - **Did:** Seeded `theme-state.json` + `templates/downstream/theme-state.json` from `themes/boreal.json` (incl. border + settings). Eval fallbacks: `theme.nix` preset → boreal.json; plymouth + live ISO splash hex fallbacks; theme-shot / theme-sync examples; TESTING/RECOVERY wording.