pinakes-core: add plugin pipeline; impl signature verification & dependency resolution

Signed-off-by: NotAShelf <raf@notashelf.dev>
Change-Id: Ida98135cf868db0f5a46a64b8ac562366a6a6964

Cargo.toml

@@ -1,5 +1,6 @@
 [workspace]
 members = ["crates/*"]
+exclude = ["crates/pinakes-core/tests/fixtures/test-plugin"]
 resolver = "3"
 
 [workspace.package]
@@ -46,6 +47,9 @@ tracing-subscriber = { version = "0.3.22", features = ["env-filter", "json"] }
 # Hashing
 blake3 = "1.8.3"
 
+# Cryptographic signatures (plugin verification)
+ed25519-dalek = { version = "2.1.1", features = ["std"] }
+
 # Metadata extraction
 lofty = "0.23.2"
 lopdf = "0.39.0"
@@ -88,6 +92,7 @@ tower_governor = "0.8.0"
 
 # HTTP client
 reqwest = { version = "0.13.2", features = ["json", "query", "blocking"] }
+url = "2.5"
 
 # TUI
 ratatui = "0.30.0"
@@ -136,6 +141,9 @@ http = "1.4.0"
 wasmtime = { version = "42.0.1", features = ["component-model"] }
 wit-bindgen = "0.53.1"
 
+# Misc
+tempfile = "3.26.0"
+
 # See:
 #  <https://doc.rust-lang.org/rustc/lints/listing/allowed-by-default.html>
 [workspace.lints.clippy]