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stack/packages/mosaic/framework/tools/prdy/prdy-update.sh
ms-lead-reviewer 1eb77c17f3
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fix(#829): harden runtime launch guard against marker evasions
2026-07-18 00:17:50 -05:00

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#!/usr/bin/env bash
set -euo pipefail
#
# prdy-update.sh — Update an existing PRD via guided runtime session
#
# Usage:
# prdy-update.sh [--project <path>]
#
# Launches a dedicated runtime session in yolo mode with a specialized
# system prompt that reads the existing PRD and guides targeted modifications.
SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
source "$SCRIPT_DIR/_lib.sh"
# ─── Parse arguments ─────────────────────────────────────────────────────────
PROJECT="."
while [[ $# -gt 0 ]]; do
case "$1" in
--project) PROJECT="$2"; shift 2 ;;
-h|--help)
cat <<'USAGE'
prdy-update.sh — Update an existing PRD via guided runtime session
Usage: prdy-update.sh [--project <path>]
Options:
--project <path> Project directory (default: CWD)
Launches the selected runtime in yolo mode with a PRD-update prompt.
The agent will read the existing docs/PRD.md, summarize its state,
and ask what changes are needed.
Examples:
mosaic prdy update
mosaic prdy update --project ~/src/my-app
USAGE
exit 0
;;
*) echo "Unknown option: $1" >&2; exit 1 ;;
esac
done
# Expand tilde if passed literally (e.g., --project ~/src/foo)
PROJECT="${PROJECT/#\~/$HOME}"
# ─── Preflight checks ───────────────────────────────────────────────────────
RUNTIME_CMD="$(prdy_runtime_command)"
_require_cmd "$RUNTIME_CMD"
# Require existing PRD
EXISTING="$(find_prd "$PROJECT")"
if [[ -z "$EXISTING" ]]; then
fail "No PRD found in $PROJECT/docs/"
echo -e " Run ${C_CYAN}mosaic prdy init${C_RESET} to create one first."
exit 1
fi
# ─── Build system prompt ─────────────────────────────────────────────────────
step "Launching PRD update session"
SYSTEM_PROMPT="$(build_prdy_system_prompt "update")"
KICKOFF="Read the existing PRD at ${EXISTING}, summarize its current state, then ask what changes or additions are needed."
# ─── Launch runtime ──────────────────────────────────────────────────────────
info "Updating: $EXISTING"
info "Mode: PRD Update (yolo, runtime: $RUNTIME_CMD)"
echo ""
cd "$PROJECT"
if [[ "$RUNTIME_CMD" == "claude" ]]; then
exec python3 "$SCRIPT_DIR/../lease-broker/launch-runtime.py" --dangerous --runtime claude -- \
claude --append-system-prompt "$SYSTEM_PROMPT" "$KICKOFF"
fi
if [[ "$RUNTIME_CMD" == "codex" ]]; then
CODEX_PROMPT="$(cat <<EOF
Follow this PRD contract exactly.
$SYSTEM_PROMPT
Task:
$KICKOFF
EOF
)"
exec codex --dangerously-bypass-approvals-and-sandbox "$CODEX_PROMPT"
fi
fail "Unsupported runtime: $RUNTIME_CMD"
exit 1