문서 repair guide와 목적형 HTML/XLSX 경로를 추가 고도화

- ArtifactRepairGuideService를 추가해 HTML/XLSX/DOCX 품질 리뷰 결과를 Repair guide 형태의 실행 가능한 보정 지침으로 변환
- HtmlSkill, ExcelSkill, DocumentAssemblerTool 출력에 repair guide를 연결해 품질 점수 뒤에 후속 보완 방향을 함께 제공
- Excel dashboard sheet에 dashboard_tiles와 variance_series를 추가해 운영 리뷰형 workbook archetype을 강화
- strategy-brief-html, operating-review-xlsx 번들 스킬을 추가해 목적형 문서 생성 진입점을 확장
- README.md와 docs/DEVELOPMENT.md에 2026-04-14 23:58 (KST) 기준 작업 이력과 검증 명령을 반영

검증 결과
- dotnet build src/AxCopilot/AxCopilot.csproj -c Release -v minimal -p:OutputPath=bin\\verify_doc_next6\\ -p:IntermediateOutputPath=obj\\verify_doc_next6\\ : 경고 0 / 오류 0
- dotnet test src/AxCopilot.Tests/AxCopilot.Tests.csproj -c Release -v minimal --filter ArtifactQualityReviewServiceTests|ArtifactRepairGuideServiceTests|ExcelSkillDashboardSummaryTests|HtmlSkillConsultingSectionsTests|HtmlSkillPrintFrameTests|DocumentAssemblerStyleMapTests|DocumentAssemblerDocxFeaturesTests|DocumentAssemblerSemanticTests|PptxSkillGoldenDeckTests|DeckQualityReviewServiceTests -p:OutputPath=bin\\verify_doc_next6_tests\\ -p:IntermediateOutputPath=obj\\verify_doc_next6_tests\\ : 통과 17

src/AxCopilot.Tests/Services/ArtifactRepairGuideServiceTests.cs

@@ -0,0 +1,44 @@
+using AxCopilot.Services.Agent;
+using FluentAssertions;
+using Xunit;
+
+namespace AxCopilot.Tests.Services;
+
+public class ArtifactRepairGuideServiceTests
+{
+    [Fact]
+    public void BuildGuide_ForWorkbookIssues_ShouldReturnWorkbookActions()
+    {
+        var review = new ArtifactQualityReport(
+            "xlsx",
+            68,
+            ["Includes summary sheet"],
+            [
+                new ArtifactReviewIssue("Workbook could benefit from a dashboard sheet to summarize multi-sheet trends.", ArtifactReviewSeverity.Info),
+                new ArtifactReviewIssue("Summary sheet does not link to detail sheets.", ArtifactReviewSeverity.Warning)
+            ]);
+
+        var guide = ArtifactRepairGuideService.BuildGuide(review);
+
+        guide.Should().Contain("dashboard sheet");
+        guide.Should().Contain("detail sheets");
+    }
+
+    [Fact]
+    public void BuildGuide_ForHtmlIssues_ShouldReturnHtmlActions()
+    {
+        var review = new ArtifactQualityReport(
+            "html",
+            70,
+            ["Includes print-ready CSS"],
+            [
+                new ArtifactReviewIssue("Print-ready business report would benefit from decision summary or evidence cards.", ArtifactReviewSeverity.Warning),
+                new ArtifactReviewIssue("Strategy brief would be stronger with a comparison or roadmap block.", ArtifactReviewSeverity.Info)
+            ]);
+
+        var guide = ArtifactRepairGuideService.BuildGuide(review);
+
+        guide.Should().Contain("decision summary");
+        guide.Should().Contain("comparison or roadmap");
+    }
+}

src/AxCopilot.Tests/Services/ExcelSkillDashboardSummaryTests.cs

@@ -40,12 +40,18 @@ public class ExcelSkillDashboardSummaryTests
                     "scorecards": [
                       { "label": "Run-rate", "value": "96%", "status": "On Track", "note": "Ahead of plan" }
                     ],
+                    "dashboard_tiles": [
+                      { "label": "Decision status", "value": "Ready", "status": "Green", "note": "Funding ask aligned" }
+                    ],
                     "kpis": [
                       { "label": "Margin", "value": "18%", "trend": "Q/Q", "note": "Recovered" }
                     ],
                     "trend_series": [
                       { "label": "Revenue", "current": "120", "target": "130", "delta": "-10", "status": "Watch" }
                     ],
+                    "variance_series": [
+                      { "label": "Opex", "actual": "84", "target": "80", "variance": "+4", "status": "Watch" }
+                    ],
                     "sheet_summaries": [
                       { "sheet": "Revenue", "status": "Watch", "summary": "SMB margin pressure", "owner": "Sales Ops" }
                     ],
@@ -66,6 +72,7 @@ public class ExcelSkillDashboardSummaryTests
 
             result.Success.Should().BeTrue();
             result.Output.Should().Contain("Quality score");
+            result.Output.Should().Contain("Repair guide:");
 
             using var doc = SpreadsheetDocument.Open(Path.Combine(workDir, "dashboard-review.xlsx"), false);
             var workbookPart = doc.WorkbookPart!;
@@ -99,6 +106,10 @@ public class ExcelSkillDashboardSummaryTests
             dashboardTexts.Should().Contain("Open: Revenue");
             dashboardTexts.Should().Contain("Key KPIs");
             dashboardTexts.Should().Contain("Margin");
+            dashboardTexts.Should().Contain("Dashboard Tiles");
+            dashboardTexts.Should().Contain("Decision status");
+            dashboardTexts.Should().Contain("Variance Overview");
+            dashboardTexts.Should().Contain("Opex");
         }
         finally
         {

src/AxCopilot.Tests/Services/HtmlSkillConsultingSectionsTests.cs

@@ -95,6 +95,7 @@ public class HtmlSkillConsultingSectionsTests
             var result = await tool.ExecuteAsync(args, context, CancellationToken.None);
 
             result.Success.Should().BeTrue();
+            result.Output.Should().Contain("Repair guide:");
             var html = File.ReadAllText(Path.Combine(workDir, "consulting.html"));
             html.Should().Contain("comparison-grid");
             html.Should().Contain("roadmap-block");