feat(task-019): define discovery-to-context mappings

TASKS.md

@@ -337,7 +337,7 @@ Definition of Done:
 
 ## TASK-019 — Define discovery-to-context mappings
 
-Status: Todo
+Status: Done
 
 Role: Architecture Agent
 
@@ -364,6 +364,29 @@ Definition of Done:
 - Mapping covers all discovery questions
 - Future implementation work is clearly defined
 
+Result
+
+Created `context/discovery-context-mapping.md` which documents:
+
+- Reference table of all 10 core discovery questions (Q-001 through Q-010)
+- Reference table of all target context files and their purpose
+- Detailed mapping for each question to primary and secondary context files with specific section guidance
+- Summary question-to-file matrix for quick reference
+- Implementation notes defining how future code should read discovery answers and populate context files
+- Constraints for future implementation (preserve existing content, skip low-confidence answers)
+- Test requirements for when code is eventually written
+
+Added `tests/test_discovery_mapping.py` with 6 tests validating:
+
+- Mapping file existence
+- All 10 core questions are present
+- Table-format documentation section exists
+- Summary matrix section exists
+- Future implementation notes exist (and clarify no code has been implemented yet)
+- All context files from templates.py are referenced in the mapping
+
+No context generation implementation was added — this task is a planning artifact only.
+
 ## TASK-020 — Generate context files from discovery answers
 
 Status: Todo