refactor: 将装饰器 gobridge 重命名为 expose，并添加 pyproject.toml

README.md

@@ -28,7 +28,7 @@ Python 端直接复制 `python/gobridge/` 目录到项目中，无需安装依
 from gobridge import gobridge, run
 from typing import Iterator
 
-@gobridge
+@expose
 def add(a: int, b: int) -> int:
     return a + b
 
@@ -61,15 +61,15 @@ result, err := gobridge.Invoke[[]User](ctx, pool, "enrich_users", users)
 
 ```python
 # Python
-@gobridge
+@expose
 def add(a: int, b: int) -> int:
     return a + b
 
-@gobridge
+@expose
 def get_user(uid: int) -> dict:
     return {"id": uid, "name": f"user_{uid}", "score": uid * 1.5}
 
-@gobridge
+@expose
 def enrich_users(users: list) -> list:
     for u in users:
         u["level"] = "gold" if u["score"] >= 10 else "silver"
@@ -95,12 +95,12 @@ for u := range userCh {
 
 ```python
 # Python
-@gobridge
+@expose
 def range_gen(start: int, stop: int) -> Iterator[int]:
     for i in range(start, stop):
         yield i
 
-@gobridge
+@expose
 def gen_users(count: int) -> Iterator[dict]:
     for i in range(1, count + 1):
         yield {"id": i, "name": f"user_{i}", "score": float(i * 3)}
@@ -125,7 +125,7 @@ fmt.Println(total) // 15
 
 ```python
 # Python
-@gobridge
+@expose
 def sum_stream(numbers: Iterator[int]) -> int:
     return sum(numbers)
 ```
@@ -151,7 +151,7 @@ for u := range outCh {
 
 ```python
 # Python
-@gobridge
+@expose
 def process_users(users: Iterator[dict]) -> Iterator[dict]:
     for u in users:
         yield {"id": u["id"], "name": u["name"].upper(), "score": u["score"] * 2}
@@ -170,7 +170,7 @@ result, err := gobridge.Invoke[int](ctx, pool, "slow_compute", 1000000)
 ```
 
 ```python
-@gobridge
+@expose
 def slow_compute(n: int) -> int:
     total = 0
     for i in range(n):
@@ -360,7 +360,7 @@ gobridge = { git = "https://git.fsdpf.net/go/gobridge.git", subdirectory = "pyth
   │  │      _dispatch()    │    → 执行线程抛 InterruptedError│    │
   │  │            │        │                              │     │
   │  │     ┌──────▼──────┐ │                              │     │
-  │  │     │ @gobridge fn│ │                              │     │
+  │  │     │ @expose fn│ │                              │     │
   │  │     │             │ │                              │     │
   │  │     │  普通函数    │ │                              │     │
   │  │     │  return val ──────────────► result/error     │     │