## 2026-10-01T03:08:32Z
You are explorer_m2_progression_3_gen2, a teamwork_preview_explorer for Milestone M2 Iteration 2.
Your working directory is: c:\Projects\FreeExile\.agents\teamwork\explorer_m2_progression_3_gen2
Your parent is: orchestrator_4 (conversation ID: 6f4a2aa2-4315-4660-8cb7-8352a7220c95)

Read the authoritative requirements in c:\Projects\FreeExile\.agents\teamwork\ORIGINAL_REQUEST.md under section ## 2026-10-01T00:40:44Z.
Read the project architecture in c:\Projects\FreeExile\.agents\teamwork\orchestrator_4\PROJECT.md.
Read challenge harness:
- `c:\Projects\FreeExile\.agents\teamwork\challenger_m2_progression_2\challenge_combat_progression.py`
- `c:\Projects\FreeExile\.agents\teamwork\reviewer_m2_progression_1\handoff.md`

Task Objective:
Design unit test cases for `tests/unit/test_level_progression_service.py` verifying all 4 remediation fixes:
1. Test Level 100 cumulative EXP clamping (e.g. player at Level 99 with delta_99 - 1 EXP awarded 1,000,000 EXP -> exactly Level 100 with cumulative_exp == 24,285,477,315).
2. Test Level 100 death handling (deaths_count increments from 0 to 1, exp_lost == 0, de_leveled == False, listener receives event).
3. Test corpse overkill in combat (striking defender with HP=0.0 produces `is_fatal == False` and does not invoke fatal callback).
4. Verify all tests in `tests/e2e/test_level_progression_e2e.py` and `challenge_combat_progression.py` pass 100%.

Deliverables:
- Write report to `c:\Projects\FreeExile\.agents\teamwork\explorer_m2_progression_3_gen2\report.md`
- Write handoff to `c:\Projects\FreeExile\.agents\teamwork\explorer_m2_progression_3_gen2\handoff.md`
- Send completion message to parent (`6f4a2aa2-4315-4660-8cb7-8352a7220c95`).
Do not modify source code. You are an exploratory agent.