---

name: flow-next-sync description: Manually trigger plan-sync to update downstream task specs after implementation drift. Use when code changes outpace specs.

Manual Plan-Sync

Manually trigger plan-sync to update downstream task specs.

CRITICAL: flowctl is BUNDLED - NOT installed globally. Always use:

CopyFLOWCTL="${CLAUDE_PLUGIN_ROOT}/scripts/flowctl"

Input

Arguments: $ARGUMENTS Format: <id> [--dry-run]

• <id> - task ID (fn-N.M) or epic ID (fn-N or fn-N-xxx)
• --dry-run - show changes without writing

Workflow

Step 1: Parse Arguments

CopyFLOWCTL="${CLAUDE_PLUGIN_ROOT}/scripts/flowctl"
REPO_ROOT="$(git rev-parse --show-toplevel 2>/dev/null || pwd)"

Parse $ARGUMENTS for:

• First positional arg = ID
• --dry-run flag = DRY_RUN (true/false)

Validate ID format first:

• Must start with fn-
• If no ID provided: "Usage: /flow-next:sync [--dry-run]"
• If doesn't match fn-* pattern: "Invalid ID format. Use fn-N (epic) or fn-N.M (task)."

Detect ID type:

• Contains . (e.g., fn-1.2) -> task ID
• No . (e.g., fn-1 or fn-1-abc) -> epic ID

Step 2: Validate Environment

Copytest -d .flow || { echo "No .flow/ found. Run flowctl init first."; exit 1; }

If .flow/ missing, output error and stop.

Step 3: Validate ID Exists

Copy$FLOWCTL show <ID> --json

If command fails:

• For task ID: "Task not found. Run flowctl list to see available."
• For epic ID: "Epic not found. Run flowctl epics to see available."

Stop on failure.

Step 4: Find Downstream Tasks

For task ID input:

Copy# Extract epic from task ID (remove .N suffix)
EPIC=$(echo "<task-id>" | sed 's/\.[0-9]*$//')

# Get all tasks in epic
$FLOWCTL tasks --epic "$EPIC" --json

Filter to status: todo or status: blocked. Exclude the source task itself.

For epic ID input:

Copy$FLOWCTL tasks --epic "<epic-id>" --json

1. First, find a source task to anchor drift detection (agent requires COMPLETED_TASK_ID):

   • Prefer most recently updated task with status: done
   • Else: most recently updated task with status: in_progress
   • Else: error "No completed or in-progress tasks to sync from. Complete a task first."

2. Then filter remaining tasks to status: todo or status: blocked (these are downstream).

If no downstream tasks:

CopyNo downstream tasks to sync (all done or none exist).

Stop here (success, nothing to do).

Step 5: Spawn Plan-Sync Agent

Build context and spawn via Task tool:

CopySync task specs from <source> to downstream tasks.

COMPLETED_TASK_ID: <source task id - the input task, or selected source for epic mode>
FLOWCTL: ${CLAUDE_PLUGIN_ROOT}/scripts/flowctl
EPIC_ID: <epic id>
DOWNSTREAM_TASK_IDS: <comma-separated list from step 4>
DRY_RUN: <true|false>

<if DRY_RUN is true>
DRY RUN MODE: Report what would change but do NOT use Edit tool. Only analyze and report drift.
</if>

Use Task tool with subagent_type: flow-next:plan-sync

Note: COMPLETED_TASK_ID is always provided - for task-mode it's the input task, for epic-mode it's the source task selected in Step 4.

Step 6: Report Results

After agent returns, format output:

Normal mode:

CopyPlan-sync: <source> -> downstream tasks

Scanned: N tasks (<list>)
<agent summary>

Dry-run mode:

CopyPlan-sync: <source> -> downstream tasks (DRY RUN)

<agent summary>

No files modified.

Error Messages

Rules

• Ignores config - planSync.enabled setting is for auto-trigger only; manual always runs
• Any source status - source task can be todo, in_progress, done, or blocked
• Includes blocked - downstream set includes both todo and blocked tasks
• Reuses agent - spawns existing plan-sync agent, no duplication