vc=82 — subscription-feed enrichment via lightweight stream_metadata

enrich_feed_item now calls the new strawcore stream_metadata() path (Android
/player + videoDetails read only) instead of the full stream_info. The full
path ran the JS sig/nsig deobf, an extra WEB /player metadata round-trip, the
iOS client, and stream/manifest/caption extraction — then kept only view_count
+ duration_seconds. Those two come from the same videoDetails the lightweight
path reads (populate_microformat never touches them), so the values are
identical; the feed just stops paying for the discarded work — ~one heavy
round-trip dropped per enriched item per refresh.

FFI surface (enrichFeedItem -> EnrichedFeedMetadata) unchanged. Needs
strawcore 30f24d2 (pushed first; CI clones strawcore main).

buildSrc/src/main/kotlin/ProjectConfig.kt

@@ -9,6 +9,21 @@ const val STRAW_SDK_TARGET = 35
 
 // Sulkta fork — Straw
 //
+// vc=82 / 0.1.0-CP — subscription-feed enrichment goes lightweight:
+//   * Filling in a feed row's view count + duration used to run the FULL
+//     stream extraction per item (the same path opening a video does):
+//     Android /player, the JS signature/nsig deobfuscation, an extra WEB
+//     /player metadata round-trip, plus stream/manifest/caption parsing —
+//     then threw all of it away except those two numbers. On a refresh
+//     that touched dozens of items that was dozens of redundant heavy
+//     round-trips.
+//   * Now it calls a new strawcore stream_metadata() path that does only
+//     the Android /player fetch + the videoDetails read those two fields
+//     come from, skipping the JS eval, the extra WEB round-trip, iOS, and
+//     stream extraction. The values are identical (they come from the same
+//     videoDetails the full path used), the feed just stops paying for
+//     work it discarded. (strawcore 30f24d2.)
+//
 // vc=81 / 0.1.0-CO — perf-audit app-side batch (no behavior change):
 //   * Search: the reactive cache-preview filter no longer runs on the
 //     main thread on every keystroke. It walked the entire cached-
@@ -134,6 +149,6 @@ const val STRAW_SDK_TARGET = 35
 // vc=19 / 0.1.0-AE — rust pipeline cutover. Extraction via
 // strawcore-core (Sulkta-OSS/strawcore) via the UniFFI wrapper; no
 // NewPipeExtractor in the runtime path.
-const val STRAW_VERSION_CODE = 81
+const val STRAW_VERSION_CODE = 82
-const val STRAW_VERSION_NAME = "0.1.0-CO"
+const val STRAW_VERSION_NAME = "0.1.0-CP"
 const val STRAW_APPLICATION_ID = "com.sulkta.straw"

rust/strawcore/src/feed.rs

@@ -47,11 +47,13 @@ const YEAR_MAX: i32 = 2200;
 ///
 /// built specifically so the subs feed can show 'N views ·
 /// X duration' the way YT does, without paying the full channel_info
-/// page-scrape cost on initial paint. The underlying stream_info IS
+/// page-scrape cost on initial paint. Backed by the lightweight
-/// heavier than we'd like (~500ms each, runs JS deobf for play URLs
+/// `stream::stream_metadata` path (Android `/player` `videoDetails`
-/// we'll discard) — future opt would be to parse the watch-page HTML
+/// only) — it skips the JS sig/nsig deobf, the extra WEB `/player`
-/// JSON state directly for just these two fields. ~100ms savings per
+/// metadata round-trip, the iOS client, and stream/manifest/caption
-/// call but ~150 lines of HTML/JSON pluck logic. Punted until needed.
+/// extraction the full `stream_info` runs, all of which the feed would
+/// discard. Same two values the full path would return, minus the
+/// ~500ms JS/stream tail + the redundant WEB round-trip.
 #[derive(Debug, Clone, uniffi::Record)]
 pub struct EnrichedFeedMetadata {
     pub view_count: i64,
@@ -63,10 +65,10 @@ pub async fn enrich_feed_item(
     video_url: String,
 ) -> Result<EnrichedFeedMetadata, StrawcoreError> {
     crate::runtime::ensure_initialized();
-    let info = crate::stream::stream_info(video_url).await?;
+    let (view_count, duration_seconds) = crate::stream::stream_metadata(video_url).await?;
     Ok(EnrichedFeedMetadata {
-        view_count: info.view_count,
+        view_count,
-        duration_seconds: info.duration_seconds,
+        duration_seconds,
     })
 }
 

rust/strawcore/src/stream.rs

@@ -7,6 +7,7 @@
 
 use strawcore_core::youtube::linkhandler::stream::extract_video_id;
 use strawcore_core::youtube::stream_extractor::stream_info as core_stream_info;
+use strawcore_core::youtube::stream_extractor::stream_metadata as core_stream_metadata;
 
 use crate::error::StrawcoreError;
 use crate::search::SearchItem;
@@ -69,6 +70,23 @@ pub async fn stream_info(input: String) -> Result<StreamInfo, StrawcoreError> {
     Ok(map_stream_info(video_id, core))
 }
 
+/// Metadata-only fetch — returns `(view_count, duration_seconds)` from the
+/// Android `videoDetails`, skipping the JS-deobf / streams / extra WEB
+/// round-trip the full `stream_info` pays. Backs `enrich_feed_item`, which
+/// only needs those two fields. Non-negative clamping mirrors
+/// `map_stream_info` so the values are identical to the full path's.
+pub async fn stream_metadata(input: String) -> Result<(i64, i64), StrawcoreError> {
+    log::info!("strawcore::stream_metadata input_len={}", input.len());
+    crate::runtime::ensure_initialized();
+    let video_id = resolve_video_id(&input)?;
+    let core = tokio::task::spawn_blocking(move || core_stream_metadata(&video_id))
+        .await
+        .map_err(|e| StrawcoreError::Extractor {
+            msg: format!("join: {e}"),
+        })??;
+    Ok((clamp_nonneg(core.view_count), core.duration_seconds.max(0)))
+}
+
 fn resolve_video_id(input: &str) -> Result<String, StrawcoreError> {
     let trimmed = input.trim();
     // Bare 11-char id?