docs(03-04): complete SearchService and DuplicatesService plan — 2/2 tasks, 5 MakeKey tests pass

.planning/ROADMAP.md

@@ -125,6 +125,6 @@ Phases execute in numeric order: 1 → 2 → 3 → 4 → 5
 |-------|----------------|--------|-----------|
 | 1. Foundation | 8/8 | Complete   | 2026-04-02 |
 | 2. Permissions | 7/7 | Complete | 2026-04-02 |
-| 3. Storage and File Operations | 4/8 | In Progress|  |
+| 3. Storage and File Operations | 5/8 | In Progress|  |
 | 4. Bulk Operations and Provisioning | 0/? | Not started | - |
 | 5. Distribution and Hardening | 0/? | Not started | - |

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: executing
-stopped_at: Completed 03-06-PLAN.md — Phase 3 EN/FR localization keys
+stopped_at: Completed 03-04-PLAN.md — SearchService and DuplicatesService
-last_updated: "2026-04-02T13:32:33.562Z"
+last_updated: "2026-04-02T13:33:35.151Z"
 last_activity: 2026-04-02 — Plan 03-02 complete — StorageService CSOM scan engine implemented
 progress:
   total_phases: 5
   completed_phases: 2
   total_plans: 23
-  completed_plans: 19
+  completed_plans: 20
   percent: 65
 ---
 
@@ -79,6 +79,7 @@ Progress: [██████░░░░] 65%
 | Phase 03-storage P01 | 10min | 2 tasks | 22 files |
 | Phase 03-storage P03 | 2min | 2 tasks | 2 files |
 | Phase 03-storage P06 | 5min | 1 tasks | 3 files |
+| Phase 03-storage P04 | 2min | 2 tasks | 2 files |
 
 ## Accumulated Context
 
@@ -138,6 +139,9 @@ Recent decisions affecting current work:
 - [Phase 03-storage 03-02]: StorageService.LastModified uses StorageMetrics.LastModified with fallback to Folder.TimeLastModified — StorageMetrics.LastModified may be DateTime.MinValue for empty libraries
 - [Phase 03-storage 03-02]: System folder filter uses Forms/ and _-prefix heuristic — matches SharePoint standard hidden folder naming convention
 - [Phase 03-storage]: Explicit System.IO using required in StorageCsvExportService and StorageHtmlExportService — WPF project does not include System.IO in implicit usings (established project pattern)
+- [Phase 03-storage 03-04]: SearchService uses SelectProperties.Add per-item loop — StringCollection has no AddRange(string[]) overload in this SDK version
+- [Phase 03-storage 03-04]: DuplicatesService.MakeKey internal static method matches inline test helper in DuplicatesServiceTests exactly — deliberate design to ensure test parity
+- [Phase 03-storage 03-04]: DuplicatesService file mode re-implements pagination inline — avoids coupling between services with different result models (DuplicateItem vs SearchResult)
 
 ### Pending Todos
 
@@ -150,6 +154,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-04-02T13:32:33.560Z
+Last session: 2026-04-02T13:33:35.149Z
-Stopped at: Completed 03-06-PLAN.md — Phase 3 EN/FR localization keys
+Stopped at: Completed 03-04-PLAN.md — SearchService and DuplicatesService
 Resume file: None

.planning/phases/03-storage/03-04-SUMMARY.md

@@ -0,0 +1,128 @@
+---
+phase: 03-storage
+plan: "04"
+subsystem: search
+tags: [csom, sharepoint-search, kql, duplicates, pagination]
+
+# Dependency graph
+requires:
+  - phase: 03-01
+    provides: ISearchService, IDuplicatesService, SearchOptions, DuplicateScanOptions, SearchResult, DuplicateItem, DuplicateGroup, OperationProgress models and interfaces
+
+provides:
+  - SearchService: KQL-based file search with 500-row pagination and 50,000-item hard cap
+  - DuplicatesService: file duplicates via Search API + folder duplicates via CAML FSObjType=1
+  - MakeKey composite key logic for grouping duplicates by name+size+dates+counts
+
+affects: [03-05, 03-07, 03-08]
+
+# Tech tracking
+tech-stack:
+  added: []
+  patterns:
+    - "KeywordQuery + SearchExecutor pattern: executor.ExecuteQuery(kq) registers query, then ExecuteQueryRetryHelper.ExecuteQueryRetryAsync executes it"
+    - "StringCollection.Add loop: SelectProperties is StringCollection, not List<string> — must add properties one-by-one"
+    - "StartRow pagination: += BatchSize per iteration, hard stop at MaxStartRow (50,000)"
+    - "goto done pattern for early exit from nested pagination loop when MaxResults reached"
+
+key-files:
+  created:
+    - SharepointToolbox/Services/SearchService.cs
+    - SharepointToolbox/Services/DuplicatesService.cs
+  modified: []
+
+key-decisions:
+  - "SearchService uses SelectProperties.Add per-item loop — StringCollection has no AddRange(string[]) overload in this SDK version"
+  - "DuplicatesService.MakeKey internal static method matches inline test helper in DuplicatesServiceTests exactly — deliberate design to ensure test parity"
+  - "DuplicatesService file mode re-implements pagination inline (not delegating to SearchService) — avoids coupling between services with different result models"
+
+patterns-established:
+  - "KQL SelectProperties: Add each property in a foreach loop, never AddRange with array"
+  - "Search pagination: do/while with startRow <= MaxStartRow guard, break on empty table"
+  - "Folder CAML: FSObjType=1 (not FileSystemObjectType) — wrong name returns zero results"
+
+requirements-completed: [SRCH-01, SRCH-02, DUPL-01, DUPL-02]
+
+# Metrics
+duration: 2min
+completed: 2026-04-02
+---
+
+# Phase 03 Plan 04: SearchService and DuplicatesService Summary
+
+**KQL file search with 500-row StartRow pagination (50k cap) and composite-key duplicate detection for files (Search API) and folders (CAML FSObjType=1)**
+
+## Performance
+
+- **Duration:** 2 min
+- **Started:** 2026-04-02T14:09:25Z
+- **Completed:** 2026-04-02T14:12:09Z
+- **Tasks:** 2
+- **Files modified:** 2 created
+
+## Accomplishments
+
+- SearchService implements full KQL builder (extension, date range, creator, editor, library filters) with paginated retrieval up to 50,000 items
+- DuplicatesService supports both file mode (Search API) and folder mode (CAML FSObjType=1) with client-side composite key grouping
+- MakeKey logic matches the inline test scaffold from Plan 03-01 DuplicatesServiceTests — 5 pure-logic tests pass
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Implement SearchService** - `9e3d501` (feat)
+2. **Task 2: Implement DuplicatesService** - `df5f79d` (feat)
+
+## Files Created/Modified
+
+- `SharepointToolbox/Services/SearchService.cs` - KQL search with pagination, vti_history filter, regex client-side filter, KQL length validation
+- `SharepointToolbox/Services/DuplicatesService.cs` - File/folder duplicate detection, MakeKey composite grouping, CAML folder enumeration
+
+## Decisions Made
+
+- `SelectProperties` is a `StringCollection` — `AddRange(string[])` does not compile. Fixed inline per-item `foreach` add loop (Rule 1 auto-fix applied during Task 1 first build).
+- DuplicatesService re-implements file pagination inline rather than delegating to SearchService because result types differ (`DuplicateItem` vs `SearchResult`) and the two services have different lifecycles.
+- `MakeKey` is `internal static` to match the test project's inline copy — enables verifying parity without a live CSOM context.
+
+## Deviations from Plan
+
+### Auto-fixed Issues
+
+**1. [Rule 1 - Bug] StringCollection.AddRange(string[]) does not exist**
+- **Found during:** Task 1 (SearchService build)
+- **Issue:** `kq.SelectProperties.AddRange(new[] { ... })` — `SelectProperties` is `StringCollection` which has no `AddRange` taking `string[]`; extension method overload requires `List<string>` receiver
+- **Fix:** Replaced with `foreach` loop calling `kq.SelectProperties.Add(prop)` for each property name
+- **Files modified:** `SharepointToolbox/Services/SearchService.cs`, `SharepointToolbox/Services/DuplicatesService.cs`
+- **Verification:** `dotnet build` 0 errors after fix; same fix proactively applied in DuplicatesService before its first build
+- **Committed in:** `9e3d501` (Task 1 commit)
+
+---
+
+**Total deviations:** 1 auto-fixed (Rule 1 - bug)
+**Impact on plan:** Minor API surface mismatch in the plan's code listing; fix is purely syntactic, no behavioral difference.
+
+## Issues Encountered
+
+- `dotnet test ... -x` flag not recognized by the `dotnet test` CLI on this machine (MSBuild switch error). Removed the flag; tests ran correctly without it.
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- SearchService and DuplicatesService are complete and compile cleanly
+- Wave 2 is now ready for 03-05 (Search/Duplicate exports) and 03-06 (Localization) to proceed in parallel with 03-03 (Storage exports)
+- 5 MakeKey tests pass; CSOM integration tests will remain skipped until a live tenant is available
+
+---
+*Phase: 03-storage*
+*Completed: 2026-04-02*
+
+## Self-Check: PASSED
+
+- SharepointToolbox/Services/SearchService.cs: FOUND
+- SharepointToolbox/Services/DuplicatesService.cs: FOUND
+- .planning/phases/03-storage/03-04-SUMMARY.md: FOUND
+- Commit 9e3d501 (SearchService): FOUND
+- Commit df5f79d (DuplicatesService): FOUND