feat(hololake): bind direct-language V1 baseline

product-source/hololake-clean-desktop/src-tauri/Cargo.lock

@@ -1330,6 +1330,7 @@ checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"
 name = "hololake-clean-desktop"
 version = "1.1.0"
 dependencies = [
+ "chrono",
  "regex",
  "serde",
  "serde_json",

product-source/hololake-clean-desktop/src-tauri/Cargo.toml

@@ -26,6 +26,7 @@ serde_json = "1"
 sha2 = "0.10"
 uuid = { version = "1", features = ["v4"] }
 regex = "1"
+chrono = { version = "0.4", default-features = false, features = ["clock"] }
 
 [dev-dependencies]
 tempfile = "3"

product-source/hololake-clean-desktop/src-tauri/src/storage.rs

@@ -1,6 +1,7 @@
 use crate::model::{
     Channel, ExternalAiBridge, KnowledgeDocument, KnowledgeSummary, SourceKind, TimelineEvent,
 };
+use chrono::{DateTime, SecondsFormat, Utc};
 use sha2::{Digest, Sha256};
 use std::{
     fs,
@@ -11,10 +12,7 @@ use std::{
 use tauri::{AppHandle, Manager};
 
 pub fn now() -> String {
-    SystemTime::now()
-        .duration_since(UNIX_EPOCH)
-        .map(|d| format!("{}.{:03}Z", d.as_secs(), d.subsec_millis()))
-        .unwrap_or_else(|_| "0Z".into())
+    Utc::now().to_rfc3339_opts(SecondsFormat::Millis, true)
 }
 pub fn now_unix_ms() -> u128 {
     SystemTime::now()
@@ -214,9 +212,8 @@ fn collect(root: &Path, p: &Path, out: &mut Vec<KnowledgeSummary>) -> Result<(),
                 .map_err(|e| e.to_string())?
                 .modified()
                 .ok()
-                .and_then(|t| t.duration_since(UNIX_EPOCH).ok())
-                .map(|d| d.as_secs().to_string())
-                .unwrap_or_else(|| "0".into());
+                .map(|t| DateTime::<Utc>::from(t).to_rfc3339_opts(SecondsFormat::Millis, true))
+                .unwrap_or_else(|| "1970-01-01T00:00:00.000Z".into());
             out.push(KnowledgeSummary {
                 path: rel,
                 title,
@@ -256,3 +253,15 @@ pub fn bridges(app: &AppHandle) -> Result<Vec<ExternalAiBridge>, String> {
 pub fn save_bridges(app: &AppHandle, v: &[ExternalAiBridge]) -> Result<(), String> {
     write_json(&root(app)?.join("external-ai-bridges.json"), &v)
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn runtime_timestamps_are_rfc3339_utc() {
+        let value = now();
+        assert!(value.ends_with('Z'));
+        assert!(DateTime::parse_from_rfc3339(&value).is_ok());
+    }
+}