feat(privacy): scan ingested sources for customer-identifying data

Detection-only scan (internal/privacy) attached to every AnalysisResult:
a customer-domain guess plus a findings list (category, file, line, match,
hint), ported from the KB grep playbook. Runs on archive uploads and the
serialized Redfish tree; gated by LOGPILE_PRIVACY_SCAN (default on).

Surfaced at GET /api/privacy-scan, in the "Customer data" UI panel, and as
privacy_report.json in the raw-export bundle. IP policy keeps RFC1918 and
example ranges out of findings; allowlist covers standards-body and vendor
infrastructure domains. No customer tokens in the repo. See ADL-066 and
bible-local/docs/privacy-scan.md.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

internal/server/privacy_scan_test.go

@@ -0,0 +1,101 @@
+package server
+
+import (
+	"archive/zip"
+	"bytes"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"git.mchus.pro/mchus/logpile/internal/models"
+)
+
+func samplePrivacyScan() *models.PrivacyScan {
+	return &models.PrivacyScan{
+		FilesScanned: 3,
+		Customers:    []models.CustomerGuess{{Domain: "acme.ru", Confidence: "high", Hits: 4}},
+		Findings: []models.PrivacyFinding{
+			{Category: "resolv", Severity: "high", Path: "resolv.conf", Line: 1, Match: "corp.acme.ru"},
+		},
+		Summary: models.PrivacySummary{Total: 1, High: 1, ByCategory: map[string]int{"resolv": 1}},
+	}
+}
+
+func TestHandleGetPrivacyScan_NotLoaded(t *testing.T) {
+	srv := &Server{}
+	req := httptest.NewRequest("GET", "/api/privacy-scan", nil)
+	w := httptest.NewRecorder()
+	srv.handleGetPrivacyScan(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("status = %d", w.Code)
+	}
+	var body map[string]any
+	if err := json.Unmarshal(w.Body.Bytes(), &body); err != nil {
+		t.Fatal(err)
+	}
+	if body["loaded"] != false {
+		t.Fatalf("want loaded:false, got %v", body)
+	}
+}
+
+func TestHandleGetPrivacyScan_Loaded(t *testing.T) {
+	srv := &Server{}
+	srv.SetResult(&models.AnalysisResult{PrivacyScan: samplePrivacyScan()})
+
+	req := httptest.NewRequest("GET", "/api/privacy-scan", nil)
+	w := httptest.NewRecorder()
+	srv.handleGetPrivacyScan(w, req)
+
+	if w.Code != http.StatusOK {
+		t.Fatalf("status = %d", w.Code)
+	}
+	var got models.PrivacyScan
+	if err := json.Unmarshal(w.Body.Bytes(), &got); err != nil {
+		t.Fatal(err)
+	}
+	if len(got.Customers) != 1 || got.Customers[0].Domain != "acme.ru" {
+		t.Fatalf("unexpected payload: %+v", got)
+	}
+}
+
+func TestBuildRawExportBundle_IncludesPrivacyReport(t *testing.T) {
+	pkg := newRawExportFromUploadedFile("dump.tar.gz", "application/gzip", []byte("x"), &models.AnalysisResult{})
+	result := &models.AnalysisResult{PrivacyScan: samplePrivacyScan()}
+
+	raw, err := buildRawExportBundle(pkg, result, "test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	zr, err := zip.NewReader(bytes.NewReader(raw), int64(len(raw)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	found := false
+	for _, f := range zr.File {
+		if f.Name == rawExportBundlePrivacyFile {
+			found = true
+		}
+	}
+	if !found {
+		t.Fatalf("%s missing from bundle", rawExportBundlePrivacyFile)
+	}
+}
+
+func TestBuildRawExportBundle_NoPrivacyReportWhenNil(t *testing.T) {
+	pkg := newRawExportFromUploadedFile("dump.tar.gz", "application/gzip", []byte("x"), &models.AnalysisResult{})
+	raw, err := buildRawExportBundle(pkg, &models.AnalysisResult{}, "test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	zr, err := zip.NewReader(bytes.NewReader(raw), int64(len(raw)))
+	if err != nil {
+		t.Fatal(err)
+	}
+	for _, f := range zr.File {
+		if f.Name == rawExportBundlePrivacyFile {
+			t.Fatalf("%s should be absent when PrivacyScan is nil", rawExportBundlePrivacyFile)
+		}
+	}
+}