fix: add mission detection to session hooks (#456)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

scripts/agent/session-end.sh

@@ -8,6 +8,33 @@ source "$SCRIPT_DIR/common.sh"
 ensure_repo_root
 load_repo_hooks
 
+# ─── Mission session cleanup (ORCHESTRATOR-PROTOCOL) ────────────────────────
+ORCH_DIR=".mosaic/orchestrator"
+MISSION_JSON="$ORCH_DIR/mission.json"
+SESSION_LOCK="$ORCH_DIR/session.lock"
+COORD_LIB="$HOME/.config/mosaic/tools/orchestrator/_lib.sh"
+
+if [[ -f "$SESSION_LOCK" ]] && [[ -f "$COORD_LIB" ]] && command -v jq &>/dev/null; then
+  # shellcheck source=/dev/null
+  source "$COORD_LIB"
+
+  sess_id="$(jq -r '.session_id // ""' "$SESSION_LOCK")"
+  if [[ -n "$sess_id" && -f "$MISSION_JSON" ]]; then
+    updated="$(jq \
+      --arg sid "$sess_id" \
+      --arg ts "$(iso_now)" \
+      --arg reason "completed" \
+      '(.sessions[] | select(.session_id == $sid)) |= . + {
+        ended_at: $ts,
+        ended_reason: $reason
+      }' "$MISSION_JSON")"
+    echo "$updated" > "$MISSION_JSON.tmp" && mv "$MISSION_JSON.tmp" "$MISSION_JSON"
+    echo "[agent-framework] Session $sess_id recorded in mission state"
+  fi
+
+  session_lock_clear "."
+fi
+
 if declare -F mosaic_hook_session_end >/dev/null 2>&1; then
   run_step "Run repo end hook" mosaic_hook_session_end
 else

scripts/agent/session-start.sh

@@ -43,6 +43,70 @@ if git rev-parse --is-inside-work-tree >/dev/null 2>&1 && has_remote; then
   fi
 fi
 
+# ─── Mission state detection (ORCHESTRATOR-PROTOCOL) ────────────────────────
+ORCH_DIR=".mosaic/orchestrator"
+MISSION_JSON="$ORCH_DIR/mission.json"
+COORD_LIB="$HOME/.config/mosaic/tools/orchestrator/_lib.sh"
+
+if [[ -f "$MISSION_JSON" ]] && command -v jq &>/dev/null; then
+  mission_status="$(jq -r '.status // "inactive"' "$MISSION_JSON")"
+
+  if [[ "$mission_status" == "active" || "$mission_status" == "paused" ]]; then
+    mission_name="$(jq -r '.name // "unnamed"' "$MISSION_JSON")"
+    echo ""
+    echo "========================================="
+    echo "ACTIVE MISSION DETECTED"
+    echo "========================================="
+    echo "  Mission: $mission_name"
+
+    manifest="docs/MISSION-MANIFEST.md"
+    if [[ -f "$manifest" ]]; then
+      phase="$(grep -m1 '^\*\*Phase:\*\*' "$manifest" 2>/dev/null | sed 's/.*\*\*Phase:\*\* //' || true)"
+      milestone="$(grep -m1 '^\*\*Current Milestone:\*\*' "$manifest" 2>/dev/null | sed 's/.*\*\*Current Milestone:\*\* //' || true)"
+      progress="$(grep -m1 '^\*\*Progress:\*\*' "$manifest" 2>/dev/null | sed 's/.*\*\*Progress:\*\* //' || true)"
+      [[ -n "$phase" ]] && echo "  Phase: $phase"
+      [[ -n "$milestone" ]] && echo "  Milestone: $milestone"
+      [[ -n "$progress" ]] && echo "  Progress: $progress"
+    fi
+
+    if [[ -f "docs/TASKS.md" ]]; then
+      total="$(grep -c '^|' "docs/TASKS.md" 2>/dev/null || true)"
+      total="${total:-0}"
+      done_count="$(grep -ci '| done \|| completed ' "docs/TASKS.md" 2>/dev/null || true)"
+      done_count="${done_count:-0}"
+      approx_total=$(( total > 2 ? total - 2 : 0 ))
+      echo "  Tasks: ~${done_count} done of ~${approx_total} total"
+    fi
+
+    if [[ -d "docs/scratchpads" ]]; then
+      latest_sp="$(ls -t docs/scratchpads/*.md 2>/dev/null | head -1 || true)"
+      [[ -n "$latest_sp" ]] && echo "  Scratchpad: $latest_sp"
+    fi
+
+    echo ""
+    echo "  Resume: Read manifest + scratchpad before taking action."
+    echo "  Protocol: ~/.config/mosaic/guides/ORCHESTRATOR-PROTOCOL.md"
+    echo "========================================="
+    echo ""
+
+    if [[ -f "$COORD_LIB" ]]; then
+      # shellcheck source=/dev/null
+      source "$COORD_LIB"
+      sess_id="$(next_session_id ".")"
+      runtime="${MOSAIC_RUNTIME:-unknown}"
+      session_lock_write "." "$sess_id" "$runtime" "$$"
+
+      updated="$(jq \
+        --arg sid "$sess_id" \
+        --arg rt "$runtime" \
+        --arg ts "$(iso_now)" \
+        '.sessions += [{"session_id":$sid,"runtime":$rt,"started_at":$ts,"ended_at":"","ended_reason":"","milestone_at_end":"","tasks_completed":[],"last_task_id":""}]' \
+        "$MISSION_JSON")"
+      echo "$updated" > "$MISSION_JSON.tmp" && mv "$MISSION_JSON.tmp" "$MISSION_JSON"
+    fi
+  fi
+fi
+
 if declare -F mosaic_hook_session_start >/dev/null 2>&1; then
   run_step "Run repo start hook" mosaic_hook_session_start
 else