# Autodev State Management

## State File: `_docs/_autodev_state.md`

The autodev persists its position to `_docs/_autodev_state.md`. This is a lightweight pointer — only the current step. All history lives in `_docs/` artifacts and git log. Folder scanning is the fallback when the state file doesn't exist.

### Template

**Saved at:** `_docs/_autodev_state.md` (workspace-relative, one file per project). Created on the first `/autodev` invocation; updated in place on every state transition; never deleted.

```markdown
# Autodev State

## Current Step
flow: [greenfield | existing-code | meta-repo]
step: [1-17 for greenfield, 1-17 for existing-code, 1-6 for meta-repo, or "done"]
name: [step name from the active flow's Step Reference Table]
status: [not_started / in_progress / completed / skipped / failed]
sub_step:
  phase: [integer — sub-skill internal phase/step number, or 0 if not started]
  name: [kebab-case short identifier from the sub-skill, or "awaiting-invocation"]
  detail: [optional free-text note, may be empty]
retry_count: [0-3 — consecutive auto-retry attempts, reset to 0 on success]
cycle: [1-N — feature cycle counter for existing-code flow; increments on each "Re-Entry After Completion" loop; always 1 for greenfield and meta-repo]
```

The `sub_step` field is structured. Every sub-skill must save both `phase` (integer) and `name` (kebab-case token matching the skill's documented phase names). `detail` is optional human-readable context. On re-entry the orchestrator parses `phase` and `name` to resume; if parsing fails, fall back to folder scan and log the parse failure.

### Sub-Skill Phase Persistence — Rules (not a registry)

Each sub-skill is authoritative for its own phase list. Phase names and numbers live inside the sub-skill's own SKILL.md (and any `steps/` / `phases/` files). The orchestrator does not maintain a central phase table — it reads whatever `phase` / `name` the sub-skill last wrote.

Every sub-skill MUST follow these rules when persisting `sub_step`:

1. **`phase`** — a strictly monotonic integer per invocation, starting at 0 (`awaiting-invocation`) and incrementing by 1 at each internal save point. No fractional values are ever persisted. If the skill's own docs use half-step numbering (e.g., "Phase 4.5", decompose's "Step 1.5"), the persisted integer is simply the next integer, and all subsequent phases shift up by one in that skill's own file.
2. **`name`** — a kebab-case short identifier unique within that sub-skill. Use the phase's heading or step title in kebab-case (e.g., `component-decomposition`, `auto-fix-gate`, `cross-task-consistency`). Different modes of the same skill may reuse a `phase` integer with distinct `name` values (e.g., `decompose` phase 1 is `bootstrap-structure` in default mode, `test-infrastructure-bootstrap` in tests-only mode).
3. **`detail`** — optional free-text note (batch index, mode flag, retry hint); may be empty.
4. **Reserved name** — `name: awaiting-invocation` with `phase: 0` is the universal "skill was chained but has not started" marker. Every sub-skill implicitly supports it; no sub-skill should reuse the token for anything else.

On re-entry, the orchestrator parses the structured field and resumes at `(phase, name)`. If parsing fails, it falls back to folder scan and logs the parse error — it does NOT guess a phase.

The `cycle` counter is used by existing-code flow Step 10 (Implement) detection and by implementation report naming (`implementation_report_{feature_slug}_cycle{N}.md`). It starts at 1 when a project enters existing-code flow (either by routing from greenfield's Done branch, or by first invocation on an existing codebase). It increments on each completed Retrospective → New Task loop.

### Examples

```
flow: greenfield
step: 3
name: Plan
status: in_progress
sub_step:
  phase: 4
  name: architecture-review-risk-assessment
  detail: ""
retry_count: 0
cycle: 1
```

```
flow: existing-code
step: 3
name: Test Spec
status: failed
sub_step:
  phase: 1
  name: test-case-generation
  detail: "variant 1b"
retry_count: 3
cycle: 1
```

```
flow: meta-repo
step: 2
name: Config Review
status: in_progress
sub_step:
  phase: 0
  name: awaiting-human-review
  detail: "awaiting review of _docs/_repo-config.yaml"
retry_count: 0
cycle: 1
```

```
flow: existing-code
step: 10
name: Implement
status: in_progress
sub_step:
  phase: 7
  name: batch-loop
  detail: "batch 2 of ~4"
retry_count: 0
cycle: 3
```

### State File Rules

1. **Create** on the first autodev invocation (after state detection determines Step 1)
2. **Update** after every change — this includes: batch completion, sub-step progress, step completion, session boundary, failed retry, or any meaningful state transition. The state file must always reflect the current reality.
3. **Read** as the first action on every invocation — before folder scanning
4. **Cross-check**: verify against actual `_docs/` folder contents. If they disagree, trust the folder structure and update the state file
5. **Never delete** the state file
6. **Retry tracking**: increment `retry_count` on each failed auto-retry; reset to `0` on success. If `retry_count` reaches 3, set `status: failed`
7. **Failed state on re-entry**: if `status: failed` with `retry_count: 3`, do NOT auto-retry — present the issue to the user first
8. **Skill-internal state**: when the active skill maintains its own state file (e.g., document skill's `_docs/02_document/state.json`), the autodev's `sub_step` field should reflect the skill's internal progress. On re-entry, cross-check the skill's state file against the autodev's `sub_step` for consistency.

## State Detection

Read `_docs/_autodev_state.md` first. If it exists and is consistent with the folder structure, use the `Current Step` from the state file. If the state file doesn't exist or is inconsistent, fall back to folder scanning.

### Folder Scan Rules (fallback)

Scan the workspace and `_docs/` to determine the current workflow position. The detection rules are defined in each flow file (`flows/greenfield.md`, `flows/existing-code.md`, `flows/meta-repo.md`). Resolution order:

1. Apply the Flow Resolution rules in `SKILL.md` to pick the flow first (meta-repo detection takes priority over greenfield/existing-code).
2. Within the selected flow, check its detection rules in order — first match wins.

## Re-Entry Protocol

When the user invokes `/autodev` and work already exists:

1. Read `_docs/_autodev_state.md`
2. Cross-check against `_docs/` folder structure
3. Present Status Summary (render using the banner template in `protocols.md` → "Banner Template", filled in with the active flow's "Status Summary — Step List" fragment)
4. If the detected step has a sub-skill with built-in resumability, the sub-skill handles mid-step recovery
5. Continue execution from detected state

## Session Boundaries

A **session boundary** is a transition that explicitly breaks auto-chain. Which transitions are boundaries is declared **in each flow file's Auto-Chain Rules table** — rows marked `**Session boundary**`. The details live with the steps they apply to; this section defines only the shared mechanism.

**Invariant**: a flow row without the `Session boundary` marker auto-chains unconditionally. Missing marker = missing boundary.

### Orchestrator mechanism at a boundary

1. Update the state file: mark the current step `completed`; set the next step with `status: not_started`; reset `sub_step: {phase: 0, name: awaiting-invocation, detail: ""}`; keep `retry_count: 0`.
2. Present a brief summary of what just finished (tasks produced, batches expected, etc., as relevant to the boundary).
3. Present the shared Choose block (template below) — or a flow-specific override if the flow file supplies one.
4. End the session — do not start the next skill in the same conversation.

### Shared Choose template

```
══════════════════════════════════════
 DECISION REQUIRED: <what just completed> — start <next phase>?
══════════════════════════════════════
 A) Start a new conversation for <next phase> (recommended for context freshness)
 B) Continue in this conversation (NOT recommended — context may degrade)
    Warning: if context fills mid-<next phase>, state will be saved and you will
    still be asked to resume in a new conversation — option B only delays that.
══════════════════════════════════════
 Recommendation: A — <next phase> is long; fresh context helps
══════════════════════════════════════
```

Individual boundaries MAY override this template with a flow-specific Choose block when the pause has different semantics (e.g., `meta-repo.md` Step 2 Config Review pauses for human review of a config flag, not for context freshness). The flow file is authoritative for any such override.
