fix: correct remote materialized view refresh results and options (#4672)

Remote materialized-view refreshes drained the SQL result and then
fabricated `mode=rebuild`, `rows_written=<total view rows>`, and
`source_version=0`. This made incremental refreshes report incorrect
statistics.

Make these three result fields optional across Rust, Python, and
TypeScript, and leave them unset for remote SQL refreshes. Remove the
post-refresh row count request. Local refreshes continue to populate all
metrics, and `version` remains the view version observed after
completion. Remote per-operation statistics remain unavailable until the
SQL job adapter can retrieve them.

Expose the forced-rebuild option through the Rust builder,
synchronous/asynchronous Python refresh and job methods, and TypeScript
refresh. Remote `full=true` sends `WITH (full = true)`; the default lets
the server choose its refresh mode. Local source-version pinning and
remote job cancellation are preserved.

Local refresh regression tests respect the `experimental-functions`
build gate, while remote refresh coverage also runs in default builds.

Validation:

- Rust: 20 materialized-view tests and 21 remote SQL tests passed with
`remote,experimental-functions`; `cargo fmt --all` passed.
- Python: rebuilt the extension in the uv-managed environment. The
default build passed 23 tests with 27 feature-dependent skips. The
opt-in build passed 61 tests with 3 expected default-build-only skips,
covering the materialized-view suite and 14 async query-serialization
cases from current main. Python Ruff lint and formatting checks passed.
- TypeScript: default and opt-in native builds and TypeScript
compilation passed. The default build passed 5 tests with 10 expected
feature-dependent skips; the opt-in build passed all 14
materialized-view tests with the default-build-only test skipped.
Lint/format checks and documentation generation passed.
- Repository-wide `ruff check .` reports 48 pre-existing violations in
unchanged `docs/web-tests` files; `ruff check python` passes.

Fixes #4670

<!-- lance-gatekeeper-fix:v1 agent=ece43ec4b88a48d1789f60005fa3ecfc
generation=1 -->

Co-authored-by: Gatefixer <313497061+lancedb-gatefixer[bot]@users.noreply.github.com>
Co-authored-by: Xuanwo <github@xuanwo.io>

nodejs/src/table.rs

@@ -470,11 +470,12 @@ impl Table {
     pub async fn refresh_materialized_view(
         &self,
         source_version: Option<i64>,
+        full: Option<bool>,
     ) -> napi::Result<RefreshMaterializedViewResult> {
         let view = lancedb::MaterializedView::from_table(self.inner_ref()?.clone())
             .await
             .default_error()?;
-        let mut builder = view.refresh();
+        let mut builder = view.refresh().full(full.unwrap_or(false));
         if let Some(version) = source_version {
             let version = u64::try_from(version).map_err(|_| {
                 napi::Error::from_reason("sourceVersion must be a non-negative integer")
@@ -1615,22 +1616,24 @@ impl From<lancedb::function::FunctionErrors> for FunctionErrors {
 
 #[napi(object)]
 pub struct RefreshMaterializedViewResult {
-    /// How the view was brought up to date: "rebuild".
-    pub mode: String,
-    pub rows_written: i64,
-    pub source_version: i64,
+    /// How the view was brought up to date: "rebuild", or absent for remote SQL refreshes.
+    pub mode: Option<String>,
+    /// Rows written by this refresh, or absent for remote SQL refreshes.
+    pub rows_written: Option<i64>,
+    /// Source version refreshed to, or absent for remote SQL refreshes.
+    pub source_version: Option<i64>,
     pub version: i64,
 }
 
 impl From<lancedb::RefreshMaterializedViewResult> for RefreshMaterializedViewResult {
     fn from(value: lancedb::RefreshMaterializedViewResult) -> Self {
-        let mode = match value.mode {
+        let mode = value.mode.map(|mode| match mode {
             lancedb::RefreshMode::Rebuild => "rebuild",
-        };
+        });
         Self {
-            mode: mode.to_string(),
-            rows_written: value.rows_written as i64,
-            source_version: value.source_version as i64,
+            mode: mode.map(str::to_string),
+            rows_written: value.rows_written.map(|rows| rows as i64),
+            source_version: value.source_version.map(|version| version as i64),
             version: value.version as i64,
         }
     }