Validate audio stream timelines and add genuine Google transcript diagnostics

tools/speech-rank/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "searchi-speech-rank"
+version = "0.1.0"
+edition = "2021"
+publish = false
+[workspace]
+[dependencies]
+anyhow = "1"
+serde_json = "1"
+sha2 = "0.10"
+searchi-semantic = { path = "../../crates/searchi-semantic" }
+tempfile = "3"