refactor: comprehensive codebase improvements and documentation

- Enhanced error handling with expanded GhostError variants and From impls
- Fixed race conditions in TUI (ui.rs unwrap calls)
- Added comprehensive module documentation with doc comments
- Improved type safety with proper validation in DetectionConfig
- Implemented Linux process enumeration via procfs
- Refactored TUI for better state management and removed emojis
- Enhanced CLI with proper logging initialization
- Added example configuration file (examples/ghost.toml)
- Updated README with complete feature documentation
- Added performance optimizations (saturating arithmetic, reduced clones)
- Improved testing framework with proper struct initialization
- Added validation and preset modes to DetectionConfig

.claude/settings.local.json

@@ -4,7 +4,13 @@
       "Bash(git add:*)",
       "Bash(git commit:*)",
       "Bash(cargo new:*)",
-      "Bash(cargo check:*)"
+      "Bash(cargo check:*)",
+      "Bash(tree:*)",
+      "Bash(find:*)",
+      "Bash(cargo clippy:*)",
+      "Bash(cargo build:*)",
+      "Bash(source ~/.zshrc)",
+      "Bash(source ~/.cargo/env)"
     ],
     "deny": [],
     "ask": []