# Module: `end_condition.hybrid_clear_collapse`

| | |
|---|---|
| **aspect** | `end_condition` |
| **module_id** | `end_condition.hybrid_clear_collapse` |
| **role** | End on **board clear**, **group collapse**, or **max rounds** |
| **status** | **ready-for-implement** (draft frozen for v0 kernel) |
| **rules_delta** | [`rules_delta.yaml`](rules_delta.yaml) |
| **design** | [history/260808-deal-end-sequences-design.md](../../../history/260808-deal-end-sequences-design.md) |

Independent of `problem_stress` / `problem_deal` / `attack_relief`. Measure
**alone** first, then profile `scoped_plus_hybrid_end`.

## Frozen v0 rules

### END-CLEAR

After the **Solve** step: if **zero** unclaimed Problems remain in play →
**end the game immediately**.

- Apply mode scoring as usual.
- **Threshold:** if total claimed value ≥ scenario threshold for seat band →
  group success (SHARED mastery / semi-coalition personal winners as normal).
- If claimed value < threshold but board is empty (should be rare) → group
  **failure** (nothing left to claim).

### END-COLLAPSE

After Round End stress clamp (and problem-stress ticks if any module active),
before Lead rotation:

**Collapse** if **either**:

1. **No seat has Stress ≤ 3**, or  
2. **Majority** of seats are in an **active DARVO sequence** (stage ≠ OFF).

Effect:

- End the game.
- **Group success = false** (SHARED fails).
- Semi / coalition: **no personal / coalition winners** (table broke).

### END-CEILING

If Round **5** completes without CLEAR or COLLAPSE → end with current
threshold + mode scoring (identical to baseline fixed-rounds behaviour).

Round max is **5** in v0 (same product length as r0). Changing max is a
different module later if needed.

## Non-goals (v0)

- Soft collapse (one seat at 5 only).
- Extending rounds when board not clear.
- Mode-specific collapse exceptions.

## Success criteria (when clay-borg implements)

1. Alone on baseline content: some games end before round 5 (clear or collapse).
2. Mean game length ≤ 5 rounds; no hangs.
3. With `problem_stress.scoped`: collapse rate non-zero for unregulated policies;
   clear rate non-zero for greedy SHARED at 3–4p.
4. Does not recreate H1-style 0% greedy wins solely via collapse spam.