docs: fix the two snippet imports Mint cannot resolve

Two pages imported PySchemaAddSetup under the alias SchemaAddSetup, and
Mint resolved only the first, failing `mint validate` on
management/table.mdx. Both pages now import it unaliased.

TsAddProgress was added to the generated tables snippets by hand in
lancedb/docs#243 and dropped by the next regeneration, leaving
ingestion/insert.mdx with a missing import. Its example is restored
unchanged as a test in docs/web-tests/ts/tables.test.ts, which checks
that the callback reports the finished write.

docs/web/feature-engineering/data-evolution.mdx

@@ -7,7 +7,7 @@ keywords: ["data evolution", "derived columns", "add_columns", "zero copy", "fea
 ---
 
 import {
-    PySchemaAddSetup as SchemaAddSetup,
+    PySchemaAddSetup,
     TsSchemaAddSetup as TsSchemaAddSetup,
     RsSchemaAddSetup as RsSchemaAddSetup,
     PyAddColumnsCalculated as AddColumnsCalculated,
@@ -34,7 +34,7 @@ In SQL this is [`ALTER TABLE ... ADD COLUMN ... AS`](/sql/ddl/table#computed-col
 
 <CodeGroup>
     <CodeBlock filename="Python" language="Python" icon="python">
-    {SchemaAddSetup}
+    {PySchemaAddSetup}
     </CodeBlock>
 
     <CodeBlock filename="TypeScript" language="TypeScript" icon="square-js">

docs/web/management/table.mdx

@@ -7,7 +7,7 @@ keywords: ["table", "create_table", "open_table", "clone", "rename", "drop"]
 ---
 
 import {
-    PySchemaAddSetup as SchemaAddSetup,
+    PySchemaAddSetup,
     TsSchemaAddSetup as TsSchemaAddSetup,
     RsSchemaAddSetup as RsSchemaAddSetup,
     PyAddColumnsDefaultValues as AddColumnsDefaultValues,
@@ -534,7 +534,7 @@ First, let's create a sample table with product data to demonstrate schema evolu
 
 <CodeGroup>
     <CodeBlock filename="Python" language="Python" icon="python">
-    {SchemaAddSetup}
+    {PySchemaAddSetup}
     </CodeBlock>
 
     <CodeBlock filename="TypeScript" language="TypeScript" icon="square-js">

docs/web/snippets/tables.mdx

@@ -148,6 +148,8 @@ export const TsAddColumnsNullable = "// Add a nullable timestamp column\nawait s
 
 export const TsAddFeatureColumnsSql = "await schemaAddTable.addColumns([\n  {\n    name: \"price_per_id\",\n    valueSql: \"cast(price / id as float)\",\n  },\n  {\n    name: \"price_log\",\n    valueSql: \"ln(price)\",\n  },\n  {\n    name: \"price_score\",\n    valueSql: \"cast(price / (price + 100.0) as float)\",\n  },\n]);\n";
 
+export const TsAddProgress = "// Track ingestion progress as batches are written.\nawait table.add(moreData, {\n  progress: (p) => {\n    const total = p.totalRows ?? \"?\";\n    console.log(\n      `wrote ${p.outputRows}/${total} rows ` +\n        `(${p.outputBytes} bytes, ${p.elapsedSeconds.toFixed(1)}s, ` +\n        `${p.activeTasks}/${p.totalTasks} tasks active)` +\n        (p.done ? \" \\u2014 done\" : \"\"),\n    );\n  },\n});\n";
+
 export const TsAlterColumnsDataType = "// Change price from int32 to int64 for larger numbers\nawait schemaAlterTable.alterColumns([\n  { path: \"price\", dataType: new arrow.Int64() },\n]);\n";
 
 export const TsAlterColumnsMultiple = "// Rename, change type, and make nullable in one operation\nawait schemaAlterTable.alterColumns([\n  {\n    path: \"sale_price\",\n    rename: \"final_price\",\n    dataType: new arrow.Float64(),\n    nullable: true,\n  },\n]);\n";