feat: add benchmark-programs — 58 telecom COBOL test programs

作为子目录纳入系统，与核心测试管道协同

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

benchmark-programs/04-edit-getput/README.md

@@ -0,0 +1,53 @@
+# 04-edit-getput: Edit/GetPut Pass-Through
+
+## 电信业务场景
+
+请求书编辑输出。从客户/用量汇总文件读取记录，直接转记到输出文件。用于请求书的最终格式化输出。
+
+## Description
+
+A minimal COBOL edit/getput program that reads records from FILE-IN and
+writes them unchanged to FILE-OUT. No matching, no branching logic.
+
+## Record Layout
+
+| Field    | Type     | Length | Description        |
+|----------|----------|--------|--------------------|
+| FIELD1   | PIC X    | 10     | Record code        |
+| FIELD2   | PIC X    | 20     | Description text   |
+| FIELD3   | PIC 9    | 05     | Numeric amount     |
+
+Total record length: 35 bytes.
+
+## Files
+
+| File             | Purpose                           |
+|------------------|-----------------------------------|
+| main-04-edit-getput.cbl | Main COBOL program (fixed format) |
+| data-gen.sh      | Generate sequential test data     |
+| run.sh           | Compile, run, verify              |
+| README.md        | This file                         |
+
+## Tests
+
+| Test Case         | Description                              |
+|-------------------|------------------------------------------|
+| 1 record (min)    | Verify program handles 1 record input     |
+| 5 records (std)   | Verify standard multi-record processing   |
+| Output existence  | Confirm FILE-OUT is created               |
+| Size match        | Input and output file sizes identical     |
+| Record length     | Each record is exactly 35 bytes           |
+
+## Usage
+
+```bash
+cd 04-edit-getput
+bash data-gen.sh 1     # Generate 1 record (minimal test)
+bash run.sh            # Full test with 5 records
+```
+
+## Expected Behavior
+
+- All input records are written to output unchanged.
+- File status is checked after OPEN, error messages on failure.
+- Record count is displayed at end of processing.