Add deck synergy suggestions, a responsive deck layout, and undoable library bulk-add

Suggestion scoring is fully offline (tribal/mechanic/archetype/mana-base
signals derived at ingest, no external synergy database), with an "unusual
picks" mode that surfaces underappreciated cards instead of staples. The
deck page's top panels now use a CSS grid so wide windows don't waste
horizontal space. Library's bulk add-to-deck can clobber existing deck
quantities, so it now offers an undo (snackbar + command palette, the
latter with no timeout) that restores each card's prior state exactly.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

crates/mtgc-core/src/ingest.rs

@@ -438,6 +438,10 @@ struct ScryOracle {
     /// "restricted"). See [`crate::model::Legalities`].
     #[serde(default)]
     legalities: std::collections::HashMap<String, String>,
+    /// Scryfall's EDHREC popularity rank (lower = more played); absent for
+    /// some cards. Kept nullable — see `synergy::CardSuggestion::edhrec_rank`.
+    #[serde(default)]
+    edhrec_rank: Option<i64>,
 }
 
 #[derive(Deserialize)]
@@ -457,8 +461,8 @@ fn load_oracle_cards(conn: &Connection, reader: impl Read, cancel: &CancelToken)
         let mut ins_card = conn.prepare(
             "INSERT OR IGNORE INTO oracle_cards
                (oracle_id,name,name_lower,mana_value,colors,color_identity,type_line,oracle_text,
-                produced_mana,produces_colorless,legalities)
-             VALUES (?1,?2,?3,?4,?5,?6,?7,?8,?9,?10,?11)",
+                produced_mana,produces_colorless,legalities,themes,edhrec_rank)
+             VALUES (?1,?2,?3,?4,?5,?6,?7,?8,?9,?10,?11,?12,?13)",
         )?;
         let mut ins_fts =
             conn.prepare("INSERT INTO oracle_names_fts(name,oracle_id) VALUES (?1,?2)")?;
@@ -538,6 +542,7 @@ fn load_oracle_cards(conn: &Connection, reader: impl Read, cancel: &CancelToken)
             let produces_colorless = produced.iter().any(|s| s.eq_ignore_ascii_case("C"));
 
             let legalities = Legalities::from_scryfall(&c.legalities);
+            let themes = crate::synergy::compute_themes(&oracle_text);
 
             let changed = ins_card.execute(params![
                 oracle_id,
@@ -551,6 +556,8 @@ fn load_oracle_cards(conn: &Connection, reader: impl Read, cancel: &CancelToken)
                 produced_mana.0 as i64,
                 produces_colorless as i64,
                 legalities.0,
+                themes,
+                c.edhrec_rank,
             ])?;
             // Only emit satellite rows the first time we see this oracle_id.
             if changed == 1 {
@@ -971,6 +978,40 @@ mod tests {
         }
     }
 
+    #[test]
+    fn captures_themes_and_edhrec_rank() {
+        let oracle = r#"[
+          {"oracle_id":"oid-sac","name":"Sac Outlet","cmc":2.0,"color_identity":["B"],"keywords":[],
+           "oracle_text":"Whenever a creature you control dies, each opponent loses 1 life.","edhrec_rank":1200},
+          {"oracle_id":"oid-vanilla","name":"Grizzly Bears","cmc":2.0,"color_identity":["G"],"keywords":[],
+           "oracle_text":"You gain 2 life."}
+        ]"#;
+
+        let dir = tempfile::tempdir().unwrap();
+        let dest = dir.path().join("reference.db");
+        let conn = open_reference_for_build(&dest).unwrap();
+        load_oracle_cards(&conn, oracle.as_bytes(), &CancelToken::new()).unwrap();
+
+        let fetch = |id: &str| -> (i64, Option<i64>) {
+            conn.query_row(
+                "SELECT themes, edhrec_rank FROM oracle_cards WHERE oracle_id=?1",
+                params![id],
+                |r| Ok((r.get(0)?, r.get(1)?)),
+            )
+            .unwrap()
+        };
+
+        let (sac_themes, sac_rank) = fetch("oid-sac");
+        assert_ne!(sac_themes & 1, 0, "Sacrifice bit set from payoff phrasing");
+        assert_eq!(sac_rank, Some(1200));
+
+        let (van_themes, van_rank) = fetch("oid-vanilla");
+        // "You gain 2 life." is an action, not the "whenever you gain life"
+        // payoff, so no theme bit; and no edhrec_rank present → NULL.
+        assert_eq!(van_themes, 0);
+        assert_eq!(van_rank, None);
+    }
+
     #[test]
     fn captures_back_face_image_for_double_faced_cards() {
         // Transform/MDFC cards: two `card_faces`, each with its own image.