fix: Migrate planner, predictor, supervisor to SDK (#6)

Replace tmux-based run_formula_and_monitor() with synchronous agent_run()
from lib/agent-sdk.sh, matching the pattern established in gardener-run.sh.

Key changes per agent:
- Drop agent-session.sh, use agent-sdk.sh (SID_FILE, LOGFILE)
- Remove SESSION_NAME, PHASE_FILE, PHASE_POLL_INTERVAL (tmux/phase artifacts)
- Strip phase protocol from prompt footer (SDK mode needs no phase signals)
- Preserve all prompt composition: context blocks, memory, journal, preflight

Shared helpers added to lib/formula-session.sh:
- build_sdk_prompt_footer(): build_prompt_footer minus phase protocol
- formula_worktree_setup(): fetch + cleanup + create worktree + EXIT trap

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

planner/planner-run.sh

@@ -1,10 +1,16 @@
 #!/usr/bin/env bash
 # =============================================================================
-# planner-run.sh — Cron wrapper: direct planner execution via Claude + formula
+# planner-run.sh — Cron wrapper: planner execution via SDK + formula
 #
-# Runs daily (or on-demand). Guards against concurrent runs and low memory.
-# Creates a tmux session with Claude (opus) reading formulas/run-planner.toml.
-# No action issues — the planner is a nervous system component, not work.
+# Synchronous bash loop using claude -p (one-shot invocation).
+# No tmux sessions, no phase files — the bash script IS the state machine.
+#
+# Flow:
+#   1. Guards: cron lock, memory check
+#   2. Load formula (formulas/run-planner.toml)
+#   3. Context: VISION.md, AGENTS.md, ops:RESOURCES.md, structural graph,
+#      planner memory, journal entries
+#   4. agent_run(worktree, prompt) → Claude plans, may push knowledge updates
 #
 # Usage:
 #   planner-run.sh [projects/disinto.toml]   # project config (default: disinto)
@@ -20,24 +26,22 @@ export PROJECT_TOML="${1:-$FACTORY_ROOT/projects/disinto.toml}"
 source "$FACTORY_ROOT/lib/env.sh"
 # Use planner-bot's own Forgejo identity (#747)
 FORGE_TOKEN="${FORGE_PLANNER_TOKEN:-${FORGE_TOKEN}}"
-# shellcheck source=../lib/agent-session.sh
-source "$FACTORY_ROOT/lib/agent-session.sh"
 # shellcheck source=../lib/formula-session.sh
 source "$FACTORY_ROOT/lib/formula-session.sh"
 # shellcheck source=../lib/worktree.sh
 source "$FACTORY_ROOT/lib/worktree.sh"
 # shellcheck source=../lib/guard.sh
 source "$FACTORY_ROOT/lib/guard.sh"
+# shellcheck source=../lib/agent-sdk.sh
+source "$FACTORY_ROOT/lib/agent-sdk.sh"
 
 LOG_FILE="$SCRIPT_DIR/planner.log"
-# shellcheck disable=SC2034  # consumed by run_formula_and_monitor
-SESSION_NAME="planner-${PROJECT_NAME}"
-PHASE_FILE="/tmp/planner-session-${PROJECT_NAME}.phase"
-
-# shellcheck disable=SC2034  # read by monitor_phase_loop in lib/agent-session.sh
-PHASE_POLL_INTERVAL=15
-
+# shellcheck disable=SC2034  # consumed by agent-sdk.sh
+LOGFILE="$LOG_FILE"
+# shellcheck disable=SC2034  # consumed by agent-sdk.sh
+SID_FILE="/tmp/planner-session-${PROJECT_NAME}.sid"
 SCRATCH_FILE="/tmp/planner-${PROJECT_NAME}-scratch.md"
+WORKTREE="/tmp/${PROJECT_NAME}-planner-run"
 
 log() { echo "[$(date -u +%Y-%m-%dT%H:%M:%S)Z] $*" >> "$LOG_FILE"; }
 
@@ -92,14 +96,13 @@ SCRATCH_CONTEXT=$(read_scratch_context "$SCRATCH_FILE")
 SCRATCH_INSTRUCTION=$(build_scratch_instruction "$SCRATCH_FILE")
 
 # ── Build prompt ─────────────────────────────────────────────────────────
-build_prompt_footer "
+build_sdk_prompt_footer "
   Relabel:     curl -sf -H \"Authorization: token \${FORGE_TOKEN}\" -X PUT -H 'Content-Type: application/json' '${FORGE_API}/issues/{number}/labels' -d '{\"labels\":[LABEL_ID]}'
   Comment:     curl -sf -H \"Authorization: token \${FORGE_TOKEN}\" -X POST -H 'Content-Type: application/json' '${FORGE_API}/issues/{number}/comments' -d '{\"body\":\"...\"}'
   Close:       curl -sf -H \"Authorization: token \${FORGE_TOKEN}\" -X PATCH -H 'Content-Type: application/json' '${FORGE_API}/issues/{number}' -d '{\"state\":\"closed\"}'
 "
 
-# shellcheck disable=SC2034  # consumed by run_formula_and_monitor
-PROMPT="You are the strategic planner for ${FORGE_REPO}. Work through the formula below. You MUST write PHASE:done to '${PHASE_FILE}' when finished — the orchestrator will time you out if you return to the prompt without signalling.
+PROMPT="You are the strategic planner for ${FORGE_REPO}. Work through the formula below.
 
 ## Project context
 ${CONTEXT_BLOCK}${MEMORY_BLOCK}${JOURNAL_BLOCK}
@@ -113,12 +116,14 @@ ${SCRATCH_INSTRUCTION}
 
 ${PROMPT_FOOTER}"
 
-# ── Run session ──────────────────────────────────────────────────────────
-export CLAUDE_MODEL="opus"
-run_formula_and_monitor "planner"
+# ── Create worktree ──────────────────────────────────────────────────────
+formula_worktree_setup "$WORKTREE"
 
-# ── Cleanup scratch file on normal exit ──────────────────────────────────
-# FINAL_PHASE already set by run_formula_and_monitor
-if [ "${FINAL_PHASE:-}" = "PHASE:done" ]; then
-  rm -f "$SCRATCH_FILE"
-fi
+# ── Run agent ─────────────────────────────────────────────────────────────
+export CLAUDE_MODEL="opus"
+
+agent_run --worktree "$WORKTREE" "$PROMPT"
+log "agent_run complete"
+
+rm -f "$SCRATCH_FILE"
+log "--- Planner run done ---"