docs: clarify env field reuses EnvironmentConfig.env, covers both session and harbor

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: BCeZn

docs/dev/agent/README.md

@@ -131,11 +131,11 @@ rock/sdk/agent/
 ```
 JobConfig (Pydantic, rock/sdk/agent/models/job/config.py)
 │
-│  ── Rock environment (not serialized to Harbor YAML) ──
+│  ── Rock environment (Rock sandbox + Harbor env, not serialized to Harbor YAML) ──
 ├── environment: RockEnvironmentConfig
 │   ├── (from SandboxConfig) image, memory, cpus, cluster, base_url, startup_timeout, ...
-│   ├── (from HarborEnvConfig) type, force_build, override_cpus, override_memory_mb, ...
-│   ├── env: dict[str, str]            # env vars injected into sandbox bash session
+│   ├── (from EnvironmentConfig) type, force_build, override_cpus, override_memory_mb, ...
+│   ├── env: dict[str, str]            # reuses EnvironmentConfig.env — injected into sandbox session and passed to harbor
 │   ├── setup_commands: list[str]       # commands to run before harbor
 │   ├── file_uploads: list[tuple]       # files to upload: (local_path, sandbox_path)
 │   └── auto_stop: bool                 # close sandbox after completion
@@ -447,7 +447,7 @@ JobConfig 分为两部分：Harbor 原生字段直接透传给 `harbor jobs star
 | `environment.base_url` | `str` | env var | Rock admin URL |
 | `environment.setup_commands` | `list[str]` | `[]` | harbor 运行前的准备命令 |
 | `environment.file_uploads` | `list[tuple[str, str]]` | `[]` | 上传文件/目录：(local_path, sandbox_path) |
-| `environment.env` | `dict[str, str]` | `{}` | sandbox session 环境变量（OSS keys 等） |
+| `environment.env` | `dict[str, str]` | `{}` | 复用 EnvironmentConfig.env — 注入 sandbox session，同时传给 harbor |
 | `environment.auto_stop` | `bool` | `False` | 完成后自动关闭 sandbox |
 
 #### Harbor 原生字段（核心）

rock/sdk/agent/models/job/config.py

@@ -134,7 +134,7 @@ class JobConfig(BaseModel):
     and passed to ``harbor jobs start -c``.
     """
 
-    # ── Rock environment (sandbox + lifecycle) ──
+    # ── Rock environment (Rock sandbox config + Harbor EnvironmentConfig, not serialized to Harbor YAML) ──
     environment: RockEnvironmentConfig = Field(default_factory=RockEnvironmentConfig)
 
     # ── Harbor native fields ──