fix(workplans): adopt ADR-007 derived identifiers

Records absent from central carried random pre-ADR-007 identifiers minted by
the retired local hub, which C-06 refused as stale references. Deriving from
the canonical record id takes no identity from anything.

Refs CUST-WP-0068-T06

Assistant: claude-code
Assistant-Model: opus
Assistant-Process: 2583210@bnt-lap001
Assistant-Session: f2bff2d5-e9b2-4338-92ca-10282a927006

editions/experiments/h1-problem-stress/metadata.json

@@ -0,0 +1,40 @@
+{
+  "dataset_id": "GROUND-DARVO-EXP-H1-0.1",
+  "variant_id": "h1-problem-stress",
+  "base_variant_id": "ground-darvo-r0",
+  "base_path": "editions/ground-darvo-r0",
+  "game_title": "GROUND",
+  "subtitle": "A Game of Bonds and Rivalry",
+  "edition": "DARVO Edition — experiment H1",
+  "version": "0.1-h1",
+  "status": "Experimental rules variant (not baseline)",
+  "player_count": "2–6",
+  "duration": "5–15 minutes",
+  "rounds": 5,
+  "relationship_slots_per_player": 2,
+  "description": "Experiment H1 on top of ground-darvo-r0: unsolved Problems raise everyone's Stress at Round End; high-Stress ATTACK self-soothes by 1. Hypothesis and success criteria: history/260807-attack-darvo-stress-design.md",
+  "inherits_unchanged_from_base": [
+    "Problems.csv",
+    "Solutions.csv",
+    "Modes.csv",
+    "Scenarios.csv",
+    "Tokens.csv",
+    "DARVO.csv",
+    "Relations.csv",
+    "Player_Mats.csv",
+    "Glossary.csv",
+    "Extensions.csv",
+    "BOM.csv",
+    "Print_Manifest.csv",
+    "Symbols.csv",
+    "Back_Designs.csv",
+    "Design_Tokens.csv"
+  ],
+  "changed_files": [
+    "Actions.csv",
+    "Rules_Text.csv",
+    "metadata.json",
+    "rules_delta.yaml",
+    "VARIANT.md"
+  ]
+}