Lift drill into evals/ at 013fcb8b7dbefd6d3fa4653493e5d2ec8e7f985b

rsync of obra/drill@013fcb8b7d into superpowers/evals/, excluding
.git/, .venv/, results/, .env/, __pycache__/, *.egg-info/,
.private-journal/.

The drill repo is unaffected by this commit; archival is a separate
manual step after this PR merges.

Source SHA recorded at evals/.drill-source-sha for divergence
detection.

evals/scenarios/decomposing-into-waves-dependency-chain.yaml

@@ -0,0 +1,28 @@
+scenario: decomposing-into-waves-dependency-chain
+description: "Agent detects semantic import-based dependencies, not just file overlap"
+user_posture: spec-aware
+
+setup:
+  helpers:
+    - create_dependency_chain_repo
+  assertions:
+    - "test -f docs/superpowers/plans/test-plan.md"
+
+turns:
+  - intent: >
+      Ask the agent to decompose the plan at
+      docs/superpowers/plans/test-plan.md into waves. Task 1 creates
+      src/types/auth.ts. Task 3 imports from src/types/auth.ts but
+      does not modify it. Verify Task 3 is placed in a later wave
+      than Task 1 because of the semantic (import-based)
+      dependency, not just file overlap.
+
+limits:
+  max_turns: 10
+  turn_timeout: 120
+
+verify:
+  criteria:
+    - "Task that imports another task's output is in a later wave"
+    - "Agent identified the semantic dependency beyond file overlap (mentioned in terminal output)"
+  observe: true