spec-executor

Keeps spec-graph synchronized with implementation progress. This skill manages graph updates only — implementation approach is the agent's discretion.

Required Skill Dependencies

STOP. Before proceeding with this skill, you MUST load the `spec-graph` skill.

The spec-graph skill provides the schema knowledge required to operate spec-graph correctly:

• Valid entity types and their ID prefixes (API, STT, TST, QST, ASM, etc.)
• Valid relation types per layer (delivers, covers, belongs_to, precedes, etc.)
• Edge matrix: which (from_type, to_type, relation_type) combinations are allowed
• Impact analysis semantics: what spec-graph impact returns and how to act on it

Without `spec-graph` skill loaded, you will hit `INVALID_INPUT` and `INVALID_EDGE` errors and waste tokens guessing at the schema. This is non-negotiable.

To load it, invoke the skill tool with name="spec-graph" before continuing.

Prerequisites

• spec-graph CLI installed and available in PATH
• Existing .spec-graph/ with at least one PLN and PHS entities (created by spec-planner)

PLN / PHS Lifecycle

Status State Machine

PLN:  draft → active → resolved (gated: plan_coverage)
                     → deprecated (--force required)

PHS:  draft → active → resolved (gated: delivery_completeness + gates)
                     → deprecated (--force required)

Transition Ownership

Rules

1. Only one active PLN at a time — single_active_plan check enforces this.
2. PHS activation order: phases with precedes predecessors should be activated in order.
3. PHS MUST be active before work begins: If status is draft, transition to active first. Never work on a draft phase.
4. No skipping states: draft → resolved is invalid. Must pass through active.
5. deprecated is terminal: no transitions out of deprecated.
6. Verify activation: After phase next --activate, confirm the response shows "activated": true. If false, manually run entity update PHS-XXX --status active.

Core Principles

1. Graph reflects reality: Only add delivers when implementation is actually complete.
2. Impact first: Always run impact before modifying entities affected by your changes.
3. Scope discipline: Write only to the current PHS. Other phases are read-only.
4. Query before create: Check existing entities before registering new ones.
5. Delegate when possible: If task() is available, delegate code work and keep graph updates to yourself.

Procedure

Step 0: Phase Selection

#### Case A: User specifies a PHS

Validate the specified phase:

# Check phase exists and get its metadata
spec-graph entity get PHS-XXX

# Check predecessor phases are resolved
spec-graph query neighbors PHS-XXX --depth 1

Verify all precedes predecessors have status resolved. If not:

PHS-XXX cannot proceed optimally.
Reason: PHS-YYY (predecessor) is not yet resolved.
Currently recommended phase: PHS-YYY

Proceed with PHS-XXX anyway?

If user confirms, proceed regardless. Do not block.

#### Case B: User does not specify a PHS

Use the phase next shortcut:

spec-graph phase next --activate

This command finds the next eligible phase (predecessors resolved, lowest order) within the active plan, activates it, and returns scope information in one call.

If you need to inspect without activating:

spec-graph phase next

#### Activate the Phase (MANDATORY)

A phase MUST be `active` before any work begins. Working on a draft phase is forbidden.

Once phase is selected, transition to active:

# Only if current status is draft
spec-graph entity update PHS-XXX --status active

Verification: After activation, confirm status:

spec-graph entity get PHS-XXX
# Verify: "status": "active"

If using phase next --activate, verify the response contains "activated": true.

Step 1: Scope Review

Query what this phase covers:

spec-graph query scope PHS-XXX

Parse the output to identify:

• Arch entities covered by this phase (via covers relations)
• Which of those already have delivers relations (already done)
• Remaining work = covered entities without delivers

Present the work summary:

Phase PHS-XXX scope:
- Total covered: N entities
- Already delivered: M entities
- Remaining: K entities

Remaining work:
- REQ-001: "..."
- REQ-003: "..."
- DEC-002: "..."

Step 2: Pre-Implementation (Impact Analysis)

Before implementing each entity, run impact:

spec-graph impact REQ-001

Inform the agent/user of affected entities:

Implementing REQ-001 affects:
- API-005 (high, structural) — direct implementation
- TST-003 (medium, behavioral) — verifies this requirement

Consider these when implementing.

This step is informational. It does not block implementation.

Step 3: During Implementation (Entity Registration)

As implementation reveals new artifacts, register them:

Note: --id is now optional for single creates (auto-generated, capture from .entity.id via jq -r '.entity.id'). The examples below use explicit --id because they cross-reference IDs in the immediately following relation add commands. For one-off creates where you don't need the ID in the same script block, omit --id and capture the returned value.

# Query first — avoid duplicates
spec-graph entity list --type interface --layer arch

# Register discovered API
spec-graph entity add --type interface --id API-001 \
  --title "POST /api/auth/login" \
  --metadata '{"kind":"http"}'

# Register test
spec-graph entity add --type test --id TST-001 \
  --title "Auth login returns JWT on valid credentials" \
  --metadata '{"kind":"integration"}'

# Register state transition
spec-graph entity add --type state --id STT-001 \
  --title "User: unauthenticated → authenticated" \
  --metadata '{"entity":"User","from":"unauthenticated","to":"authenticated"}'

# Register open question (if discovered)
spec-graph entity add --type question --id QST-001 \
  --title "Should refresh tokens be stored in Redis or DB?" \
  --metadata '{"owner":"backend-team"}'

# Register a change (lightweight work unit — independent of phase)
spec-graph entity add --type change --id CHG-001 \
  --title "Fix authentication token expiry bug" \
  --metadata '{"changed_entities":["internal/auth/token.go","internal/auth/token_test.go"]}'

# Connect change to arch scope via covers
spec-graph relation add --from CHG-001 --to REQ-001 --type covers

Note: CHG entities are independent — they do NOT belong to any phase or plan. Do NOT add belongs_to, precedes, or blocks relations for CHG. CHG uses covers only (not delivers) — it is a scope marker, not a delivery unit.

Add arch-internal relations:

# API implements requirement
spec-graph relation add --from API-001 --to REQ-001 --type implements

# Test verifies requirement
spec-graph relation add --from TST-001 --to REQ-001 --type verifies

# Interface triggers state
spec-graph relation add --from API-001 --to STT-001 --type triggers

Validate after each batch of mutations:

spec-graph validate --layer arch

Step 4: Post-Implementation (delivers)

When an arch entity's implementation is confirmed complete, add delivers:

spec-graph relation add --from PHS-XXX --to REQ-001 --type delivers
spec-graph relation add --from PHS-XXX --to API-001 --type delivers

Rules for delivers:

• Only add when implementation is actually done (not planned, not in-progress)
• Use the minimal proxy set — not every related entity, only those necessary and sufficient
• Only add delivers for the current PHS (scope discipline)
• The CLI auto-transitions target entities from draft to active on delivers — do NOT manually set status to active after adding delivers

Validate after adding delivers:

spec-graph validate --layer mapping --phase PHS-XXX

Step 5: Progress Report

After each work session, summarize:

Phase PHS-XXX progress:
- Delivered: M / N entities
- New entities registered: [list]
- Open questions: [list if any]
- Remaining: [list]

Git: Commit .spec-graph/ changes after completing the progress report:

git add .spec-graph/ && git commit -m "spec-graph: PHS-XXX progress - delivered M/N entities"

Delegation Policy

When task() is available (orchestration environment):

Workflow with delegation:

1. Run impact analysis (yourself)
2. Compose implementation prompt with context from impact + scope
3. Delegate code work via task()
4. Receive result
5. Verify implementation (yourself)
6. Register entities and delivers (yourself)
7. Validate (yourself)

Without delegation: Do all steps yourself.

Error Handling

Anti-Patterns

1. Premature delivers: Adding delivers before implementation is complete.
2. Scope violation: Adding delivers for a phase other than the current one.
3. Skipping impact: Modifying entities without checking what else is affected.
4. Bulk delivers: Adding delivers for every related entity instead of the minimal set.
5. Delegating graph ops: Letting delegated agents run spec-graph commands directly.
6. Phantom entities: Registering entities for code that doesn't exist yet.