merge: keep verified dependency lock and canonical v2 signal kernel

crates/fidc-core/examples/signal-book-kernel.rs

@@ -0,0 +1,15 @@
+use std::io::{Read, Write};
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let mut raw=Vec::new();
+    std::io::stdin().take(64*1024*1024+1).read_to_end(&mut raw)?;
+    if raw.len()>64*1024*1024 {return Err("signal_book_transport_limit".into());}
+    let book:fidc_core::signal_contract::SignalBook=serde_json::from_slice(&raw)?;
+    let version=book.content_sha256()?;
+    let validated=book.validate()?;
+    let result=serde_json::json!({"schema":fidc_core::signal_contract::SIGNAL_BOOK_SCHEMA,
+        "versionSha256":version,"symbols":validated.symbols(),
+        "onlineAllowed":validated.require_observed().is_ok()});
+    std::io::stdout().write_all(serde_json::to_string(&result)?.as_bytes())?;
+    Ok(())
+}

crates/fidc-core/examples/signal_book_probe.rs

@@ -1,13 +0,0 @@
-use std::io::{self,Read};
-
-fn main() -> Result<(),Box<dyn std::error::Error>> {
-    let mut input=String::new();
-    io::stdin().read_to_string(&mut input)?;
-    let book:fidc_core::signal_contract::SignalBook=serde_json::from_str(&input)?;
-    let version=book.version_sha256.clone();
-    let snapshots=book.snapshots.len();
-    let validated=book.validate().map_err(io::Error::other)?;
-    println!("{}",serde_json::json!({"ok":true,"versionSha256":version,"snapshots":snapshots,
-        "symbols":validated.symbols().len(),"observed":validated.require_observed().is_ok()}));
-    Ok(())
-}