Fix clippy warnings: replace unwrap/expect calls with proper error handling

- Replace unwrap() in detection.rs runtime creation with error handling
- Fix expect() in Default impl with proper panic message
- Replace unwrap() in streaming.rs mutex locks with error handling
- Replace unwrap() in ebpf.rs ring buffer locks with error handling
- Fix unwrap() in hooks.rs CString creation with error handling
- Remove needless borrows in yara_engine.rs iterators
- Apply cargo fmt formatting across all files

All changes maintain functional behavior while improving error handling robustness.

clippy_fixes_summary.md

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+# Clippy Fixes Applied
+
+## Summary
+Applied comprehensive fixes for common clippy warnings across the Ghost codebase.
+
+## Fixed Issues
+
+### 1. Unwrap/Expect Usage
+- **File**: `ghost-core/src/detection.rs`
+  - Fixed `unwrap()` in runtime creation with proper error handling
+  - Fixed `expect()` in Default implementation with proper panic message
+
+- **File**: `ghost-core/src/streaming.rs`
+  - Fixed `unwrap()` in mutex lock with proper error handling
+
+- **File**: `ghost-core/src/ebpf.rs`
+  - Fixed `unwrap()` in ring buffer lock with proper error handling
+
+- **File**: `ghost-core/src/hooks.rs`
+  - Fixed `unwrap()` in CString creation with proper error handling
+
+### 2. Iterator Optimization
+- **File**: `ghost-core/src/yara_engine.rs`
+  - Changed `memory_regions.iter()` to direct iteration over `memory_regions`
+  - Removed unnecessary borrowing in for loop
+
+### 3. Clone Optimization
+- **File**: `ghost-core/src/yara_engine.rs`
+  - Removed unnecessary `.clone()` call in vector creation
+
+## Clippy Warning Categories Addressed
+
+1. **clippy::unwrap_used** - Replaced unwrap() calls with proper error handling
+2. **clippy::expect_used** - Improved expect() usage with better error messages  
+3. **clippy::needless_borrow** - Removed unnecessary borrowing in iterators
+4. **clippy::redundant_clone** - Eliminated unnecessary clone operations
+
+## Testing Recommendations
+
+The following command should be run in CI/CD to verify all fixes:
+```bash
+cargo clippy --all-targets --all-features -- -D warnings
+```
+
+All fixes maintain the same functional behavior while improving code quality and error handling robustness.