flow-next-sync

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

Manual Plan-Sync

Manually trigger plan-sync to update downstream task specs.

Preamble

CRITICAL: flowctl is BUNDLED - NOT installed globally. Define once; subsequent blocks use $FLOWCTL:

FLOWCTL="$HOME/.codex/scripts/flowctl"
[ -x "$FLOWCTL" ] || FLOWCTL=".flow/bin/flowctl"

Pre-check: Local setup version

Non-blocking, same pattern as /flow-next:plan — one-line nag when the local setup lags the plugin:

SETUP_VER=$(jq -r '.setup_version // empty' .flow/meta.json 2>/dev/null)
PLUGIN_JSON="${DROID_PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT:-$HOME/.codex}}/.codex-plugin/plugin.json"
PLUGIN_VER=$(jq -r '.version' "$PLUGIN_JSON" 2>/dev/null || echo "unknown")
if [[ -n "$SETUP_VER" && "$PLUGIN_VER" != "unknown" && "$SETUP_VER" != "$PLUGIN_VER" ]]; then
 echo "Plugin updated to v${PLUGIN_VER}. Run /flow-next:setup to refresh local scripts (current: v${SETUP_VER})." >&2
fi

Continue regardless (never blocks; silent when setup was never run or versions match).

Input

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

• <id> - task ID fn-N-slug.M (or legacy fn-N.M, fn-N-xxx.M) or spec ID fn-N-slug (or legacy fn-N, fn-N-xxx), or a resolvable tracker handle (wor-17 / wor-17.M) that flowctl show maps to the linked spec/task (fn-52.10, R16)
• --dry-run - show changes without writing

Workflow

Step 1: Parse Arguments

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 first (handle-recognition rule, R16):

• Do NOT gate on a hard "must start with fn-" check. Route the arg through $FLOWCTL show <ID> --json (Step 3) — flowctl's widened resolver (fn-52.10) maps a tracker key (wor-17 / wor-17.M) to its linked spec/task, so a resolvable handle is the existing spec/task, never a new id. So /flow-next:sync wor-17 resolves the linked spec.
• If no ID provided: "Usage: /flow-next:sync [--dry-run]"
• If the arg does NOT resolve via flowctl show (Step 3): "Unknown ID. Use fn-N-slug (spec) / fn-N-slug.M (task), a tracker handle (wor-17), or legacy fn-N, fn-N-xxx."

Detect ID type (use the canonical id from flowctl show):

• Contains . (e.g., fn-1.2, fn-1-add-oauth.2, wor-17.2) -> task ID
• No . (e.g., fn-1, fn-1-add-oauth, wor-17) -> spec ID

Step 2: Validate Environment

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

If .flow/ missing, output error and stop.

Step 3: Validate ID Exists

$FLOWCTL show <ID> --json

If command fails:

• For task ID: "Task not found. Run flowctl list to see available."
• For spec ID: "Spec not found. Run flowctl specs to see available."

Stop on failure.

Step 4: Find Downstream Tasks

For task ID input:

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

# Get all tasks in spec
$FLOWCTL tasks --spec "$SPEC" --json

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

For spec ID input:

$FLOWCTL tasks --spec "<spec-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:

No downstream tasks to sync (all done or none exist).

Stop here (success, nothing to do).

Step 5: Gather glossary + decisions + strategy context

Three extra context types help the agent catch drift the spec text alone can't reveal: project-glossary terms (renames where the old spec used a term whose _Avoid_ alias now appears in code), active decision constraints (current code may touch files mentioned in a decision's Consequences section), and strategic-intent drift (completed task contradicts an active STRATEGY.md track or approach).

GLOSSARY_JSON="$("$FLOWCTL" glossary list --json 2>/dev/null \
 || echo '{"groups":[],"file_count":0,"total_terms":0}')"
DECISIONS_JSON="$("$FLOWCTL" memory list --track knowledge --category decisions --json 2>/dev/null \
 || echo '{"entries":[],"legacy":[],"count":0,"status":"active"}')"
STRATEGY_CONTENT="$("$FLOWCTL" strategy read --json 2>/dev/null || echo '{}')"

All three calls are best-effort — empty defaults keep the agent prompt valid when flowctl returns nothing or fails.

Husk short-circuit — when ALL three of the following hold, skip the extra context entirely (pass the empty defaults; the agent's husk short-circuit at the top of Phase 3b will skip the whole section):

• GLOSSARY_JSON.total_terms == 0 (glossary missing or husk)
• DECISIONS_JSON.count == 0 (no decision entries)
• STRATEGY_CONTENT.sections_filled == 0 OR STRATEGY_CONTENT == {} (no STRATEGY.md or husk — verify with flowctl strategy status --json | jq '.sections_filled // 0')

When ANY of the three has signal, pass through all three (untouched) and let the agent run the matching subsection (3b.1 / 3b.2 / 3b.3) and skip the empty ones.

When GLOSSARY_JSON.total_terms == 0 but file_count > 0, every group is a husk. Husks carry no signal for drift detection — pass the JSON through untouched and let the agent skip them.

Step 6: Spawn Plan-Sync Agent

Build context and spawn via Task tool:

Sync task specs from <source> to downstream tasks.

COMPLETED_TASK_ID: <source task id - the input task, or selected source for spec mode>
FLOWCTL: $HOME/.codex/scripts/flowctl
SPEC_ID: <spec id>
DOWNSTREAM_TASK_IDS: <comma-separated list from step 4>
DRY_RUN: <true|false>

GLOSSARY_JSON: <output of `flowctl glossary list --json` from step 5>
DECISIONS_JSON: <output of `flowctl memory list --track knowledge --category decisions --json` from step 5>
STRATEGY_CONTENT: <output of `flowctl strategy read --json` from step 5>

<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 spec-mode it's the source task selected in Step 4.

Step 7: Report Results

After agent returns, format output:

Normal mode:

Plan-sync: <source> -> downstream tasks

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

Dry-run mode:

Plan-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