feat(council): add council advisory skill with parallel/sequential/debate flows

- 3 advisors (Pragmatist, Visionary, Skeptic) + 1 Referee subagent
- Default: parallel + synthesis flow
- Prompt templates in references/prompts.md
- Model tier selection based on topic complexity
- Added TODO tasks for personality depth and skill name revisit

memory/tasks.json

@@ -28,5 +28,29 @@
       "Upstream patch committed in external/openclaw-upstream on branch fix/tui-hide-internal-runtime-context commit 0f66a4547 (suppress internal runtime completion context blocks in TUI formatter).",
       "Validation: pnpm test:fast completed successfully (812 files / 6599 tests passing) at 2026-03-04T22:53:29Z"
     ]
+  },
+  {
+    "id": "task-20260305-0838-council-personality-depth",
+    "created_at": "2026-03-05T08:38:00Z",
+    "title": "Revisit council subagent personality depth",
+    "owner": "zap",
+    "priority": "low",
+    "status": "open",
+    "details": "Explore richer personality backstories and communication styles for council advisor agents beyond the current role/lens/stance pattern.",
+    "notes": [
+      "From council skill brainstorm session 2026-03-05."
+    ]
+  },
+  {
+    "id": "task-20260305-0838-council-skill-name",
+    "created_at": "2026-03-05T08:38:00Z",
+    "title": "Revisit council skill name",
+    "owner": "zap",
+    "priority": "low",
+    "status": "open",
+    "details": "council works for now but revisit whether a better name fits as the feature matures.",
+    "notes": [
+      "From council skill brainstorm session 2026-03-05."
+    ]
   }
 ]