Align Go ingestion boundaries with Python (#16647)

Moves doc_id blob resolution into Parser, tightens chunker/tokenizer to
Python output_format semantics, updates extractor list handling, and
fixes real-template integration tests.

internal/parser/chunk/execute_test.go

@@ -0,0 +1,53 @@
+//
+// Copyright 2026 The InfiniFlow Authors. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+package chunk
+
+import "testing"
+
+func TestRun_SentenceSplitHandlesASCIIBoundaries(t *testing.T) {
+	ctx, err := Run("One. Two! Three? Four;", ChunkOptions{SplitStrategy: "sentence"})
+	if err != nil {
+		t.Fatalf("Run: %v", err)
+	}
+	if len(ctx.ResultChunks) != 4 {
+		t.Fatalf("got %d chunks, want 4", len(ctx.ResultChunks))
+	}
+	want := []string{"One", "Two", "Three", "Four"}
+	for i, chunk := range ctx.ResultChunks {
+		if chunk.Content != want[i] {
+			t.Errorf("chunk[%d] = %q, want %q", i, chunk.Content, want[i])
+		}
+	}
+}
+
+func TestRun_PostprocessHonorsTypedNumericOptions(t *testing.T) {
+	ctx, err := Run("a\nbb\nccc", ChunkOptions{
+		SplitStrategy:    "paragraph",
+		MergeTargetSize:  100,
+		FilterMinLength:  2,
+		RemoveEmptyLines: true,
+	})
+	if err != nil {
+		t.Fatalf("Run: %v", err)
+	}
+	if len(ctx.ResultChunks) != 1 {
+		t.Fatalf("got %d chunks, want 1", len(ctx.ResultChunks))
+	}
+	if ctx.ResultChunks[0].Content != "a bb ccc" {
+		t.Errorf("merged content = %q, want %q", ctx.ResultChunks[0].Content, "a bb ccc")
+	}
+}