Crash fixes, reorg handling, and sync performance improvements

- Fix FFI panics with catch_unwind and safe CString construction
- Handle poisoned mutex/RwLock after prior panics instead of crashing
- Fix empty block list panics in clear_blocks and invalidate_block
- Reuse Tokio runtime across block fetch batches to reduce overhead
- Add fetch_blocks_with_runtime for caller-managed runtime lifecycle
- Update branding, dependencies, and checkpoints for DragonX

lib/Cargo.toml

@@ -1,80 +1,80 @@
-[package]
-name = "silentdragonxlitelib"
-version = "0.1.0"
-edition = "2018"
-
-[features]
-default = ["embed_params"]
-embed_params = []
-
-[dependencies]
-base58 = "0.1.0"
-bs58 = { version = "0.2", features = ["check"] }
-log = "0.4"
-log4rs = "0.8.3"
-dirs = "2.0.2"
-http = "0.2"
-hex = "0.3"
-protobuf = "2"
-byteorder = "1"
-json = "0.12.0"
-tiny-bip39 = "0.6.2"
-secp256k1 = "=0.15.0"
-sha2 = "0.8.0"
-ripemd160 = "0.8.0"
-lazy_static = "1.2.0"
-rust-embed = { version = "5.1.0", features = ["debug-embed"] }
-rand = "0.7.2"
-sodiumoxide = "0.2.5"
-ring = "0.16.9"
-libflate = "0.1"
-subtle = "2"
-threadpool = "1.8.0"
-num_cpus = "1.13.0"
-
-tonic = { version = "0.1.1", features = ["tls", "tls-roots"] }
-bytes = "0.4"
-prost = "0.6"
-prost-types = "0.6"
-tokio = { version = "0.2", features = ["rt-threaded", "time", "stream", "fs", "macros", "uds", "full"] }
-tokio-rustls = { version = "0.12.1", features = ["dangerous_configuration"] }
-webpki = "0.21.0"
-webpki-roots = "0.18.0"
-
-[dependencies.bellman]
-git = "https://git.hush.is/hush/librustzcash.git"
-rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
-default-features = false
-features = ["groth16"]
-
-[dependencies.pairing]
-git = "https://git.hush.is/hush/librustzcash.git"
-rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
-
-[dependencies.zcash_client_backend]
-git = "https://git.hush.is/hush/librustzcash.git"
-rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
-
-default-features = false
-
-[dependencies.zcash_primitives]
-git = "https://git.hush.is/hush/librustzcash.git"
-rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
-default-features = false
-features = ["transparent-inputs"]
-
-[dependencies.zcash_proofs]
-git = "https://git.hush.is/hush/librustzcash.git"
-rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
-default-features = false
-
-[dependencies.ff]
-git = "https://git.hush.is/hush/librustzcash.git"
-rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
-features = ["ff_derive"]
-
-[build-dependencies]
-tonic-build = "0.1.1"
-
-[dev-dependencies]
-tempdir = "0.3.7"
+[package]
+name = "silentdragonxlitelib"
+version = "0.1.0"
+edition = "2018"
+
+[features]
+default = ["embed_params"]
+embed_params = []
+
+[dependencies]
+base58 = "0.1.0"
+bs58 = { version = "0.2", features = ["check"] }
+log = "0.4"
+log4rs = "0.8.3"
+dirs = "2.0.2"
+http = "0.2"
+hex = "0.3"
+protobuf = "2"
+byteorder = "1"
+json = "0.12.0"
+tiny-bip39 = "0.6.2"
+secp256k1 = "=0.15.0"
+sha2 = "0.8.0"
+ripemd160 = "0.8.0"
+lazy_static = "1.2.0"
+rust-embed = { version = "5.1.0", features = ["debug-embed"] }
+rand = "0.7.2"
+sodiumoxide = "0.2.5"
+ring = "0.16.9"
+libflate = "0.1"
+subtle = "2"
+threadpool = "1.8.0"
+num_cpus = "1.13.0"
+
+tonic = { version = "0.1.1", features = ["tls", "tls-roots"] }
+bytes = "0.4"
+prost = "0.6"
+prost-types = "0.6"
+tokio = { version = "0.2", features = ["rt-threaded", "time", "stream", "fs", "macros", "uds", "full"] }
+tokio-rustls = { version = "0.12.1", features = ["dangerous_configuration"] }
+webpki = "0.21.0"
+webpki-roots = "0.18.0"
+
+[dependencies.bellman]
+git = "https://git.hush.is/hush/librustzcash.git"
+rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
+default-features = false
+features = ["groth16"]
+
+[dependencies.pairing]
+git = "https://git.hush.is/hush/librustzcash.git"
+rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
+
+[dependencies.zcash_client_backend]
+git = "https://git.hush.is/hush/librustzcash.git"
+rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
+
+default-features = false
+
+[dependencies.zcash_primitives]
+git = "https://git.hush.is/hush/librustzcash.git"
+rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
+default-features = false
+features = ["transparent-inputs"]
+
+[dependencies.zcash_proofs]
+git = "https://git.hush.is/hush/librustzcash.git"
+rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
+default-features = false
+
+[dependencies.ff]
+git = "https://git.hush.is/hush/librustzcash.git"
+rev= "acff1444ec373e9c3e37b47ca95bfd358e45255b"
+features = ["ff_derive"]
+
+[build-dependencies]
+tonic-build = "0.1.1"
+
+[dev-dependencies]
+tempdir = "0.3.7"