feat: add new development tools and clean up configuration

- Add fzf for interactive fuzzy finding
- Add gh-dash for GitHub PR/issue dashboard with ghd alias
- Add gh-dash Catppuccin Mocha theme configuration
- Remove octo.nvim plugin from Neovim (replaced by gh-dash)
- Remove unused Claude Code CLAUDE.md file
- Update README with new tools
- Update flake.lock dependencies

Author: svnlto

README.md

@@ -20,6 +20,8 @@ This configuration provides a unified development setup across Apple Silicon Mac
 - **Zoxide** - Smart directory navigation
 - **Eza** - Modern `ls` replacement with colors and icons
 - **Carapace** - Universal shell completion for CLI tools
+- **fzf** - Interactive fuzzy finder for command line
+- **gh-dash** - GitHub CLI dashboard for PRs and issues (alias: `ghd`)
 
 ### 🎨 macOS Applications (via Homebrew)
 - **Productivity**: Raycast, Notion Calendar, SuperWhisper

common/claude-code/CLAUDE.md

@@ -11,7 +11,6 @@
   # Create writable settings.json using out-of-store symlink
   home.file.".claude/settings.json".source = config.lib.file.mkOutOfStoreSymlink
     "${config.home.homeDirectory}/.config/nix/common/claude-code/settings.json";
-  home.file.".claude/CLAUDE.md".source = ./CLAUDE.md;
   home.file.".claude/output-styles".source = ./output-styles;
 
   # Combine local commands with linear commands

common/claude-code/default.nix

@@ -0,0 +1,65 @@
+{ ... }:
+
+{
+  # gh-dash configuration with Catppuccin Mocha theme
+  home.file.".gh-dash.yml".text = ''
+    prSections:
+      - title: Mine
+        filters: is:open author:@me sort:updated-desc
+      - title: Review
+        filters: -author:@me is:open review-requested:@me sort:updated-desc
+      - title: All
+        filters: is:open sort:updated-desc
+    issuesSections:
+      - title: My Issues
+        filters: author:@me is:open sort:updated-desc
+      - title: Assigned
+        filters: assignee:@me is:open sort:updated-desc
+      - title: All Issues
+        filters: is:open sort:updated-desc
+
+    defaults:
+      view: prs
+      refetchIntervalMinutes: 5
+      prsLimit: 20
+      issuesLimit: 20
+      preview:
+        open: true
+        width: 84
+
+    theme:
+      colors:
+        text:
+          primary: "#cdd6f4"
+          secondary: "#a6adc8"
+          inverted: "#1e1e2e"
+          faint: "#6c7086"
+          warning: "#f9e2af"
+          success: "#a6e3a1"
+        background:
+          selected: "#313244"
+        border:
+          primary: "#89b4fa"
+          secondary: "#45475a"
+          faint: "#585b70"
+
+    keybindings:
+      universal:
+        - key: g
+          name: lazygit
+          command: >
+            cd {{.RepoPath}} && lazygit
+      prs:
+        - key: c
+          builtin: checkout
+        - key: O
+          builtin: view
+        - key: C
+          builtin: create
+      issues:
+        - key: O
+          builtin: view
+        - key: C
+          builtin: create
+  '';
+}