Guard PowerShell metadata query expressions

Author: SqlRush

docs/cc-100-roadmap.md

@@ -255,6 +255,8 @@ M5 补充：PowerShell read-only classifier 收紧 `Get-ItemProperty`/`Get-ItemP
 
 M5 补充：PowerShell read-only classifier 收紧 `Get-Process`/`Get-Service`，继续允许普通 literal name/id/displayName/include/exclude 查询参数，但拒绝动态表达式参数。
 
+M5 补充：PowerShell read-only classifier 收紧 metadata 查询类 cmdlet，`Get-Location`/`Get-Date`/`Get-PSDrive`/`Get-Module`/`Get-Alias`/`Get-History`/`Get-TimeZone` 继续允许普通 literal 参数，但拒绝动态表达式参数。
+
 M5 补充：Bash 前台输出和 `BashOutput` 现在都走统一 tool-result budget 截断/落盘路径；`BashOutput` 增加 100k 最大结果限制，大后台输出会保存完整内容并返回 `full_output_path` 元数据。
 
 M5 补充：Bash/PowerShell 后台任务现在会发 `*_background_started` 和 `*_background_finished` tool progress 事件，包含后台 ID、shell/status、exit/timed_out/cancelled、duration、时间戳和输出字节数，不携带 command 文本；completed、timed_out、cancelled 终态均已覆盖测试。

docs/claude-code-go-rewrite-plan.md

@@ -238,6 +238,7 @@ test/parity/                 # golden tests against TS/official behavior
 - 本轮补充：PowerShell read-only classifier 收紧 `Select-String`/`sls`，继续允许安全相对路径和普通 literal pattern/context/inputObject 参数，但拒绝动态表达式参数和越界路径。
 - 本轮补充：PowerShell read-only classifier 收紧 `Get-ItemProperty`/`Get-ItemPropertyValue` 与 `Get-FileHash`，继续允许普通 literal name/algorithm 参数，但拒绝动态表达式参数和越界路径。
 - 本轮补充：PowerShell read-only classifier 收紧 `Get-Process`/`Get-Service`，继续允许普通 literal name/id/displayName/include/exclude 查询参数，但拒绝动态表达式参数。
+- 本轮补充：PowerShell read-only classifier 收紧 metadata 查询类 cmdlet，`Get-Location`/`Get-Date`/`Get-PSDrive`/`Get-Module`/`Get-Alias`/`Get-History`/`Get-TimeZone` 继续允许普通 literal 参数，但拒绝动态表达式参数。
 - 本轮补充：`BashOutput` 现在设置 100k 最大结果大小，和前台 `Bash` 一起覆盖大输出 tool-result preview 截断、完整输出落盘及 `full_output_path` 元数据。
 - 本轮补充：Bash/PowerShell 后台命令现在会通过 tool progress 通道发 started/finished 事件，记录后台 ID、shell/status、exit/timed_out/cancelled、duration、时间戳和 stdout/stderr byte count，且 completed、timed_out、cancelled 终态测试确保 progress 不携带 command 文本。
 - 本轮补充：WebSearch domain filters 现在在 schema 层声明 array `items:string`，通用 tool schema validator 同步支持 `items` 校验；`allowed_domains`/`blocked_domains` 会拒绝空字符串、URL/port、非法 wildcard 和非域名 label。

internal/tools/powershell/tools.go

@@ -1374,32 +1374,39 @@ var powerShellReadOnlyCmdlets = map[string]powerShellReadOnlyConfig{
 		rejectExpressionValues: true,
 	},
 	"get-location": {
-		allowedFlags: stringSet("psprovider", "psdrive", "stack", "stackname"),
-		valueFlags:   stringSet("psprovider", "psdrive", "stackname"),
+		allowedFlags:           stringSet("psprovider", "psdrive", "stack", "stackname"),
+		valueFlags:             stringSet("psprovider", "psdrive", "stackname"),
+		rejectExpressionValues: true,
 	},
 	"get-date": {
-		allowedFlags: stringSet("date", "format", "uformat", "displayhint", "asutc"),
-		valueFlags:   stringSet("date", "format", "uformat", "displayhint"),
+		allowedFlags:           stringSet("date", "format", "uformat", "displayhint", "asutc"),
+		valueFlags:             stringSet("date", "format", "uformat", "displayhint"),
+		rejectExpressionValues: true,
 	},
 	"get-psdrive": {
-		allowedFlags: stringSet("name", "psprovider", "scope"),
-		valueFlags:   stringSet("name", "psprovider", "scope"),
+		allowedFlags:           stringSet("name", "psprovider", "scope"),
+		valueFlags:             stringSet("name", "psprovider", "scope"),
+		rejectExpressionValues: true,
 	},
 	"get-module": {
-		allowedFlags: stringSet("name", "listavailable", "all", "fullyqualifiedname", "psedition"),
-		valueFlags:   stringSet("name", "fullyqualifiedname", "psedition"),
+		allowedFlags:           stringSet("name", "listavailable", "all", "fullyqualifiedname", "psedition"),
+		valueFlags:             stringSet("name", "fullyqualifiedname", "psedition"),
+		rejectExpressionValues: true,
 	},
 	"get-alias": {
-		allowedFlags: stringSet("name", "definition", "scope", "exclude"),
-		valueFlags:   stringSet("name", "definition", "scope", "exclude"),
+		allowedFlags:           stringSet("name", "definition", "scope", "exclude"),
+		valueFlags:             stringSet("name", "definition", "scope", "exclude"),
+		rejectExpressionValues: true,
 	},
 	"get-history": {
-		allowedFlags: stringSet("id", "count"),
-		valueFlags:   stringSet("id", "count"),
+		allowedFlags:           stringSet("id", "count"),
+		valueFlags:             stringSet("id", "count"),
+		rejectExpressionValues: true,
 	},
 	"get-timezone": {
-		allowedFlags: stringSet("name", "id", "listavailable"),
-		valueFlags:   stringSet("name", "id"),
+		allowedFlags:           stringSet("name", "id", "listavailable"),
+		valueFlags:             stringSet("name", "id"),
+		rejectExpressionValues: true,
 	},
 	"get-computerinfo": {
 		allowAllFlags: true,

internal/tools/powershell/tools_test.go

@@ -392,6 +392,12 @@ func TestPowerShellCommandClassification(t *testing.T) {
 		"Get-Process -Id @{N=1}",
 		"Get-Service -Name $env:SECRET",
 		"Get-Service -DisplayName @{N='ssh-agent'}",
+		"Get-Date -Format $env:FORMAT",
+		"Get-PSDrive -Name $env:DRIVE",
+		"Get-Module -Name @{N='module'}",
+		"Get-Alias -Name $env:ALIAS",
+		"Get-History -Count @{N=5}",
+		"Get-TimeZone -Id $env:TZ",
 		"Write-Output `$env:SECRET",
 		"Get-NetAdapter -CimSession server",
 		"Get-DnsClientCache -CimSession server",