docs(competitive): add CodeGraphContext as Tier 1 competitor

crates/codegraph-core/src/edges_db.rs

@@ -0,0 +1,81 @@
+//! Bulk edge insertion via rusqlite — native replacement for the JS
+//! `batchInsertEdges` helper.
+//!
+//! Used by the build-edges stage to write computed call/receiver/extends/
+//! implements edges directly to SQLite without marshaling back to JS.
+
+use napi_derive::napi;
+use rusqlite::{Connection, OpenFlags};
+
+/// A single edge row to insert: [source_id, target_id, kind, confidence, dynamic].
+#[napi(object)]
+#[derive(Debug, Clone)]
+pub struct EdgeRow {
+    #[napi(js_name = "sourceId")]
+    pub source_id: u32,
+    #[napi(js_name = "targetId")]
+    pub target_id: u32,
+    pub kind: String,
+    pub confidence: f64,
+    pub dynamic: u32,
+}
+
+/// Bulk-insert edge rows into the database via rusqlite.
+/// Runs all writes in a single SQLite transaction with chunked multi-value
+/// INSERT statements for maximum throughput.
+///
+/// Returns `true` on success, `false` on any error so the JS caller can
+/// fall back to the JS batch insert path.
+#[napi]
+pub fn bulk_insert_edges(db_path: String, edges: Vec<EdgeRow>) -> bool {
+    if edges.is_empty() {
+        return true;
+    }
+    let flags = OpenFlags::SQLITE_OPEN_READ_WRITE | OpenFlags::SQLITE_OPEN_NO_MUTEX;
+    let mut conn = match Connection::open_with_flags(&db_path, flags) {
+        Ok(c) => c,
+        Err(_) => return false,
+    };
+    let _ = conn.execute_batch("PRAGMA synchronous = NORMAL; PRAGMA busy_timeout = 5000");
+    do_insert(&mut conn, &edges).is_ok()
+}
+
+/// 199 rows × 5 params = 995 bind parameters per statement, safely under
+/// the legacy `SQLITE_MAX_VARIABLE_NUMBER` default of 999.
+const CHUNK: usize = 199;
+
+fn do_insert(conn: &mut Connection, edges: &[EdgeRow]) -> rusqlite::Result<()> {
+    let tx = conn.transaction()?;
+
+    for chunk in edges.chunks(CHUNK) {
+        let placeholders: Vec<String> = (0..chunk.len())
+            .map(|i| {
+                let base = i * 5;
+                format!(
+                    "(?{},?{},?{},?{},?{})",
+                    base + 1,
+                    base + 2,
+                    base + 3,
+                    base + 4,
+                    base + 5
+                )
+            })
+            .collect();
+        let sql = format!(
+            "INSERT OR IGNORE INTO edges (source_id, target_id, kind, confidence, dynamic) VALUES {}",
+            placeholders.join(",")
+        );
+        let mut stmt = tx.prepare_cached(&sql)?;
+        for (i, edge) in chunk.iter().enumerate() {
+            let base = i * 5;
+            stmt.raw_bind_parameter(base +1, edge.source_id)?;
+            stmt.raw_bind_parameter(base +2, edge.target_id)?;
+            stmt.raw_bind_parameter(base +3, edge.kind.as_str())?;
+            stmt.raw_bind_parameter(base +4, edge.confidence)?;
+            stmt.raw_bind_parameter(base +5, edge.dynamic)?;
+        }
+        stmt.raw_execute()?;
+    }
+
+    tx.commit()
+}

crates/codegraph-core/src/lib.rs

@@ -5,12 +5,14 @@ pub mod constants;
 pub mod cycles;
 pub mod dataflow;
 pub mod edge_builder;
+pub mod edges_db;
 pub mod extractors;
 pub mod import_resolution;
 pub mod incremental;
 pub mod insert_nodes;
 pub mod parallel;
 pub mod parser_registry;
+pub mod roles_db;
 pub mod types;
 
 use napi_derive::napi;