Apply LSP diagnostics updates

Author: SqlRush

docs/cc-100-roadmap.md

@@ -1456,7 +1456,7 @@ M7 补充：terminal input parser 和 configurable keybinding name parser 现在
 - Chrome/computer-use/voice/native integrations。
 - enterprise/gated/platform-specific behavior。
 
-当前状态：已新增 `advanced` settings gate 地基，覆盖 bridge/LSP/telemetry/Chrome/voice/computer-use/native integrations 的独立 bool 开关解析、settings merge、headless `/config show advanced` 和 `/config search` 审计；`advanced.telemetry=true` 时会在 session 目录写入安全摘要 JSONL 诊断事件，记录事件类型、session/model、tool/progress keys、token/compact/error 摘要，不写入用户/助手正文或工具结果内容；`advanced.lsp=true` 时才向模型暴露只读 `LSPDiagnostics` 工具，用于读取 session-scoped diagnostics snapshot，并支持 file/severity/limit 过滤，底层已能解析 LSP `textDocument/publishDiagnostics` params/notification payload；`advanced.bridge=true` 时会写出 session-scoped bridge manifest，列出 bridge-safe slash/local command 元数据，并提供 command/display/alias 安全解析；未启用时仍不注册或泄露 gated 工具 schema。实际 repl bridge server、session websocket/direct connect、LSP server manager、diagnostic producer、telemetry exporter/tracing、Chrome/voice/computer-use/native runtime 仍未完成。
+当前状态：已新增 `advanced` settings gate 地基，覆盖 bridge/LSP/telemetry/Chrome/voice/computer-use/native integrations 的独立 bool 开关解析、settings merge、headless `/config show advanced` 和 `/config search` 审计；`advanced.telemetry=true` 时会在 session 目录写入安全摘要 JSONL 诊断事件，记录事件类型、session/model、tool/progress keys、token/compact/error 摘要，不写入用户/助手正文或工具结果内容；`advanced.lsp=true` 时才向模型暴露只读 `LSPDiagnostics` 工具，用于读取 session-scoped diagnostics snapshot，并支持 file/severity/limit 过滤，底层已能解析 LSP `textDocument/publishDiagnostics` params/notification payload 并按文件替换 snapshot；`advanced.bridge=true` 时会写出 session-scoped bridge manifest，列出 bridge-safe slash/local command 元数据，并提供 command/display/alias 安全解析；未启用时仍不注册或泄露 gated 工具 schema。实际 repl bridge server、session websocket/direct connect、LSP server manager、diagnostic producer、telemetry exporter/tracing、Chrome/voice/computer-use/native runtime 仍未完成。
 
 ## Recommended Next Steps
 

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

@@ -745,7 +745,7 @@ test/parity/                 # golden tests against TS/official behavior
 - 每个 gated feature 独立开关测试。
 - 不启用 feature 时二进制行为和可见 schema 不泄露 gated 工具/命令。
 
-- 本轮补充：新增 `advanced` settings gate 地基，覆盖 bridge/LSP/telemetry/Chrome/voice/computer-use/native integrations 的独立 bool 开关解析、settings merge、headless `/config show advanced` 和 `/config search` 审计；`advanced.telemetry=true` 时会在 session 目录写入安全摘要 JSONL 诊断事件，记录事件类型、session/model、tool/progress keys、token/compact/error 摘要，不写入用户/助手正文或工具结果内容；`advanced.lsp=true` 时才向模型暴露只读 `LSPDiagnostics` 工具，用于读取 session-scoped diagnostics snapshot，并支持 file/severity/limit 过滤，底层已能解析 LSP `textDocument/publishDiagnostics` params/notification payload；`advanced.bridge=true` 时会写出 session-scoped bridge manifest，列出 bridge-safe slash/local command 元数据，并提供 command/display/alias 安全解析；未启用时仍不注册或泄露 gated 工具 schema。实际 repl bridge server、session websocket/direct connect、LSP server manager、diagnostic producer、telemetry exporter/tracing、Chrome/voice/computer-use/native runtime 仍未完成。
+- 本轮补充：新增 `advanced` settings gate 地基，覆盖 bridge/LSP/telemetry/Chrome/voice/computer-use/native integrations 的独立 bool 开关解析、settings merge、headless `/config show advanced` 和 `/config search` 审计；`advanced.telemetry=true` 时会在 session 目录写入安全摘要 JSONL 诊断事件，记录事件类型、session/model、tool/progress keys、token/compact/error 摘要，不写入用户/助手正文或工具结果内容；`advanced.lsp=true` 时才向模型暴露只读 `LSPDiagnostics` 工具，用于读取 session-scoped diagnostics snapshot，并支持 file/severity/limit 过滤，底层已能解析 LSP `textDocument/publishDiagnostics` params/notification payload 并按文件替换 snapshot；`advanced.bridge=true` 时会写出 session-scoped bridge manifest，列出 bridge-safe slash/local command 元数据，并提供 command/display/alias 安全解析；未启用时仍不注册或泄露 gated 工具 schema。实际 repl bridge server、session websocket/direct connect、LSP server manager、diagnostic producer、telemetry exporter/tracing、Chrome/voice/computer-use/native runtime 仍未完成。
 
 ### M12: Parity hardening
 

internal/lsp/diagnostics.go

@@ -127,6 +127,26 @@ func DiagnosticsFromPublishDiagnostics(data []byte) ([]Diagnostic, error) {
 	return NormalizeDiagnostics(out), nil
 }
 
+func ApplyDiagnosticsUpdate(existing []Diagnostic, update []Diagnostic) []Diagnostic {
+	normalizedUpdate := NormalizeDiagnostics(update)
+	if len(normalizedUpdate) == 0 {
+		return NormalizeDiagnostics(existing)
+	}
+	updatedFiles := map[string]struct{}{}
+	for _, diagnostic := range normalizedUpdate {
+		updatedFiles[diagnostic.FilePath] = struct{}{}
+	}
+	out := make([]Diagnostic, 0, len(existing)+len(normalizedUpdate))
+	for _, diagnostic := range NormalizeDiagnostics(existing) {
+		if _, ok := updatedFiles[diagnostic.FilePath]; ok {
+			continue
+		}
+		out = append(out, diagnostic)
+	}
+	out = append(out, normalizedUpdate...)
+	return NormalizeDiagnostics(out)
+}
+
 func URIToPath(raw string) string {
 	raw = strings.TrimSpace(raw)
 	parsed, err := url.Parse(raw)

internal/lsp/diagnostics_test.go

@@ -117,3 +117,32 @@ func TestDiagnosticsFromPublishDiagnosticsRequiresURI(t *testing.T) {
 		t.Fatalf("err = %v", err)
 	}
 }
+
+func TestApplyDiagnosticsUpdateReplacesUpdatedFiles(t *testing.T) {
+	existing := []Diagnostic{
+		{FilePath: "a.go", Severity: "error", Message: "old a"},
+		{FilePath: "b.go", Severity: "warning", Message: "old b"},
+	}
+	update := []Diagnostic{
+		{FilePath: "./a.go", Severity: "2", Message: "new a"},
+		{FilePath: "", Severity: "error", Message: "ignored"},
+	}
+	got := ApplyDiagnosticsUpdate(existing, update)
+	if len(got) != 2 {
+		t.Fatalf("updated diagnostics = %#v", got)
+	}
+	if got[0].FilePath != "a.go" || got[0].Severity != "warning" || got[0].Message != "new a" {
+		t.Fatalf("updated diagnostics = %#v", got)
+	}
+	if got[1].FilePath != "b.go" || got[1].Message != "old b" {
+		t.Fatalf("updated diagnostics = %#v", got)
+	}
+}
+
+func TestApplyDiagnosticsUpdateIgnoresEmptyUpdate(t *testing.T) {
+	existing := []Diagnostic{{FilePath: "a.go", Severity: "error", Message: "old a"}}
+	got := ApplyDiagnosticsUpdate(existing, nil)
+	if len(got) != 1 || got[0].Message != "old a" {
+		t.Fatalf("updated diagnostics = %#v", got)
+	}
+}