fix: add model=opus to run-planner formula and wire through action-agent

TOML declares model = "opus". planner-poll.sh includes model: opus in
the issue YAML front matter. action-agent.sh extracts it and exports
CLAUDE_MODEL. create_agent_session passes --model to claude if set.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

action/action-agent.sh

@@ -76,6 +76,14 @@ fi
 
 log "Issue: ${ISSUE_TITLE}"
 
+# --- Extract model from YAML front matter (if present) ---
+YAML_MODEL=$(printf '%s' "$ISSUE_BODY" | \
+  sed -n '/^---$/,/^---$/p' | grep '^model:' | awk '{print $2}' | tr -d '"' || true)
+if [ -n "$YAML_MODEL" ]; then
+  export CLAUDE_MODEL="$YAML_MODEL"
+  log "model from front matter: ${YAML_MODEL}"
+fi
+
 # --- Fetch existing comments (resume context) ---
 COMMENTS_JSON=$(curl -sf -H "Authorization: token ${CODEBERG_TOKEN}" \
   "${CODEBERG_API}/issues/${ISSUE}/comments?limit=50") || true

formulas/run-planner.toml

@@ -8,6 +8,7 @@
 name        = "run-planner"
 description = "Strategic planning: update docs, triage predictions, resource+leverage gap analysis"
 version     = 1
+model       = "opus"
 
 [context]
 files = ["VISION.md", "AGENTS.md", "RESOURCES.md"]

lib/agent-session.sh

@@ -245,8 +245,12 @@ create_agent_session() {
   fi
 
   rm -f "$idle_marker"
+  local model_flag=""
+  if [ -n "${CLAUDE_MODEL:-}" ]; then
+    model_flag="--model ${CLAUDE_MODEL}"
+  fi
   tmux new-session -d -s "$session" -c "$workdir" \
-    "claude --dangerously-skip-permissions" 2>/dev/null
+    "claude --dangerously-skip-permissions ${model_flag}" 2>/dev/null
   sleep 1
   tmux has-session -t "$session" 2>/dev/null || return 1
   agent_wait_for_claude_ready "$session" 120 || return 1

planner/planner-poll.sh

@@ -64,6 +64,7 @@ fi
 # ── File action issue ─────────────────────────────────────────────────────
 ISSUE_BODY="---
 formula: run-planner
+model: opus
 ---
 
 Periodic strategic planning run. The action-agent reads \`formulas/run-planner.toml\`