docs(10-03): complete TestHarness & test updates plan

Tasks completed: 2/2
- Update TestHarness convenience methods
- Update all tests for questions array

SUMMARY: .planning/phases/10-multi-question-schema/10-03-SUMMARY.md

.planning/STATE.md

@@ -10,18 +10,18 @@ See: .planning/PROJECT.md (updated 2026-01-31)
 ## Current Position
 
 Phase: 10 of 13 (Multi-Question Schema)
-Plan: 2 of 2 complete
-Status: Phase complete
-Last activity: 2026-01-31 — Completed 10-02-PLAN.md
+Plan: 3 of 4 in current phase
+Status: In progress
+Last activity: 2026-01-31 — Completed 10-03-PLAN.md
 
 Progress: ██░░░░░░░░ 15%
 
 ## Performance Metrics
 
 **Velocity:**
-- Total plans completed: 37
+- Total plans completed: 38
 - Average duration: 3 min
-- Total execution time: 120 min
+- Total execution time: 124 min
 
 **By Phase (v1.0):**
 
@@ -36,7 +36,7 @@ Progress: ██░░░░░░░░ 15%
 | 6 | 3/3 | 9 min | 3 min |
 
 **Recent Trend:**
-- Last 5 plans: 10-02 (4 min), 10-01 (5 min), 09-02 (3 min), 09-01 (3 min), 08.1-02 (4 min)
+- Last 5 plans: 10-03 (4 min), 10-02 (4 min), 10-01 (5 min), 09-02 (3 min), 09-01 (3 min)
 - Trend: Steady
 
 ## Accumulated Context
@@ -125,6 +125,8 @@ Recent decisions affecting current work:
 - 10-02: Answers passed as Record<string, string> mapping question ID to answer
 - 10-02: formatAnswersAsPrompt formats as [id]: answer for Claude resume
 - 10-02: CLI accepts JSON object or single string (defaults to q1 key)
+- 10-03: setAgentQuestion convenience wraps single question in array format
+- 10-03: Multi-question test covers 3 questions with mixed option types
 
 ### Pending Todos
 
@@ -145,5 +147,5 @@ None.
 ## Session Continuity
 
 Last session: 2026-01-31
-Stopped at: Completed Phase 10 Plan 02 (Multi-Question Schema)
+Stopped at: Completed 10-03-PLAN.md (TestHarness and Test Updates)
 Resume file: None