feat: initial fish shell configuration

- Core config layered on CachyOS base with Catppuccin Mocha theming
- Fisher plugins: fzf.fish, catppuccin, autopair, replay, puffer-fish, magic-enter, spark
- Smart CLI wrappers with fallbacks (bat, lsd, btop, dust, prettyping)
- Custom functions: git, docker, network, kitty, AI session management
- Extensive abbreviation system for keyboard-driven workflows
- Secrets/local sourcing pattern for private and machine-specific config
- README with full documentation and personalization guide
- AGPLv3+ license with copyright headers on all source files

functions/limine-edit.fish

@@ -0,0 +1,22 @@
+# Copyright (C) 2026 Rootiest
+# SPDX-License-Identifier: AGPL-3.0-or-later
+
+function limine-edit --description 'Safely edit and re-verify Limine configuration'
+    # 1. Open the config with sudoedit
+    sudoedit /boot/limine.conf
+
+    # 2. Re-enroll the config hash (This prevents the Checksum Panic)
+    echo "Enrolling Limine config..."
+    sudo limine-enroll-config
+
+    # 3. Run the CachyOS boot hooks (Updates snapshots/kernel links)
+    echo "Running CachyOS boot hooks..."
+    sudo limine-mkinitcpio
+
+    # 4. Sign any unsigned files tracked by sbctl
+    # 'sbctl sign-all' will re-apply signatures to everything in the database
+    echo "Verifying Secure Boot signatures..."
+    sudo sbctl sign-all
+
+    echo "✅ Limine config updated and verified. Ready for reboot."
+end