feat(rust): Expand Rust kernel layer with SHA3, AES, DCache, Watchdog, JSON tokenizer & quote-aware shell

- Implement FIPS 202 SHA3-256 and SHA3-512 (Keccak-f[1600]) in pure Rust
- Implement FIPS 197 AES-128 block cipher in pure Rust
- Implement VFS fast path Directory Entry Cache (dcache) in Rust
- Implement Kernel Health Watchdog & Heartbeat Monitor in Rust
- Implement Zero-Copy JSON Tokenizer & Key-Value extractor in Rust
- Implement memory-safe PCI Vendor/Class database in Rust
- Add quote-aware tokenization to LazyBox shell parser
- Register 'sha3sum', 'dcache', 'watchdog', and 'jsonquery' applets

include/kernel/rust.h

@@ -5,16 +5,55 @@
 #include <stddef.h>
 #include <stdbool.h>
 
+// Thermal Report Struct
 typedef struct {
     uint32_t target_fan_rpm;
     uint8_t throttle_level;
     bool is_critical;
 } __attribute__((packed)) rust_thermal_report_t;
 
+// Kernel Health Watchdog Report
+typedef struct {
+    bool is_healthy;
+    uint64_t total_heartbeats;
+    uint32_t active_modules;
+    uint32_t subsystem_mask;
+} __attribute__((packed)) rust_health_report_t;
+
+// PCI Info
+typedef struct {
+    uint8_t bus;
+    uint8_t slot;
+    uint8_t func;
+    uint16_t vendor_id;
+    uint16_t device_id;
+    uint8_t class_id;
+    uint8_t subclass_id;
+} __attribute__((packed)) rust_pci_info_t;
+
+// Kernel Core
 int rust_kernel_init(void);
 const char* rust_kernel_status(void);
+
+// Cryptography
 int rust_chacha20_crypt(const uint8_t* key, const uint8_t* nonce, uint32_t counter, uint8_t* data, size_t len);
 int rust_csprng_get_random(uint8_t* buffer, size_t len);
+int rust_sha3_256(const uint8_t* data, size_t len, uint8_t* out);
+int rust_aes128_ecb_encrypt(const uint8_t* key, uint8_t* block);
+
+// Hardware & Drivers
 rust_thermal_report_t rust_sensor_calc_fan_curve(int32_t temp_celsius);
+const char* rust_pci_get_vendor_name(uint16_t vendor_id);
+const char* rust_pci_get_class_name(uint8_t class_id, uint8_t subclass_id);
+
+// VFS Directory Cache (dcache)
+int rust_dcache_lookup(const uint8_t* path, size_t len, uint64_t* out_inode, bool* out_is_dir);
+void rust_dcache_insert(const uint8_t* path, size_t len, uint64_t inode, bool is_dir);
+void rust_dcache_get_metrics(uint64_t* out_hits, uint64_t* out_misses);
+
+// Kernel Watchdog & JSON
+void rust_watchdog_ping(uint8_t subsystem_id);
+rust_health_report_t rust_watchdog_get_report(void);
+int rust_json_get_string(const uint8_t* json_str, size_t json_len, const uint8_t* key, size_t key_len, uint8_t* out_val, size_t max_out_len);
 
 #endif // _KERNEL_RUST_H