docs(gen2): record V1 retirement decision

dev/ACTIVE_TASK.json

@@ -1 +1 @@
-{"task_file":"dev/tasks/GEN2-028-inventory-v1-compatibility-usage-and-prove-retirement-readiness.json","task_id":"GEN2-028","task_revision":2}
+{"task_file":"dev/tasks/GEN2-029-retire-proven-v1-paths-without-deleting-evidence.json","task_id":"GEN2-029","task_revision":2}

docs/evidence/gen2-029-v1-retirement-decision-2026-08-30.json

@@ -0,0 +1,30 @@
+{
+  "evidence_id": "gen2-029-v1-retirement-decision-2026-08-30",
+  "task_id": "GEN2-029",
+  "task_revision": 2,
+  "source_revision": "59d32143bf4ee7b4a78cb714ec0cbd76d4d8bdf5",
+  "decision": "NO_IRREVERSIBLE_RETIREMENT",
+  "reason": "GEN2-028 found no SAFE_TO_RETIRE path. Active callers remain for PersonalMemory fallback, ActiveProjectFocus, truth_bundles, ordinary ENV reads, SkillProfile/FastPath; migration switches lack complete production telemetry.",
+  "changed_runtime_paths": [],
+  "changed_schema_paths": [],
+  "retired_paths": [],
+  "preserved": [
+    "human utterances and interaction history",
+    "epistemic observations, claims, experiences, truth_bundles and audit lineage",
+    "ActiveProjectFocus compatibility projection",
+    "PersonalMemory read fallback",
+    "SkillProfile/FastPath compatibility",
+    "ordinary ENV fallback consumers until bootstrap/config observation is complete",
+    "all existing Gen2 canonical writers and owner boundaries"
+  ],
+  "full_retirement_gate": {
+    "status": "NOT_APPLICABLE",
+    "reason": "No irreversible V1 schema/data deletion or runtime disablement was authorized or performed; the execution contract requires the gate immediately before such a retirement.",
+    "repository_full_test": "NOT_RUN_BY_DESIGN; no retirement change risk to justify expanding beyond the task's FAST/no-op decision"
+  },
+  "rollback": {
+    "point": "59d32143bf4ee7b4a78cb714ec0cbd76d4d8bdf5",
+    "method": "keep current compatibility paths and revert this evidence-only decision; no schema rollback or data deletion needed"
+  },
+  "conclusion": "No unsafe V1 path was removed. Historical evidence remains available, and there is no new dual writer. Retirement remains pending an observation window that can prove each path unused or a future approved cutover decision."
+}