feat: add multimodal search and granular performance diagnostics

crates/searchi-media/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "searchi-media"
+version.workspace = true
+edition.workspace = true
+license.workspace = true
+description = "Bounded local CPU media probing and timestamp-preserving sampling"
+
+[dependencies]
+anyhow.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+sha2 = "0.10"
+tempfile = "3"
+image = { version = "0.25", default-features = false, features = ["png", "jpeg", "webp", "bmp"] }