session v2.0.0A

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---
name: "session"
description: "Manage CocoSession multi-session continuity, iteration and cost budgets, terminal status, operator kill-switch state, one-shot steering, and predicate context. Supports `$session status`, `$session progress`, `$session steer`, `$session stop`, and `$session resume`."
version: "2.0.0"
author: "CocoPlus"
tags:
  - cocoplus
  - cocosession
  - continuity
---

Your objective is to manage CocoSession, the continuity and operator-control layer for long-running CocoPlus work.

## Commands

- `$session status`: read `.cocoplus/session/PROGRESS.md`, `.cocoplus/session/CONTEXT.md`, `.cocoplus/session/iteration-budget.json`, `.cocoplus/session/budget-state.json`, `.cocoplus/session/status.json`, `.cocoplus/pod-state.json`, `.cocoplus/AGENT_STOP`, and `.cocoplus/STEER.md`; report handoff freshness, active predicate state, queued work count, iteration budget, cost-budget state, terminal status, kill-switch state, and pending steering.
- `$session progress`: show the four handoff sections from `.cocoplus/session/PROGRESS.md`: Done, In Progress, Next, Notes.
- `$session steer "<instruction>"`: write the instruction to `.cocoplus/STEER.md`. The UserPromptSubmit hook injects it once, appends a session event, then clears the file.
- `$session stop`: create `.cocoplus/AGENT_STOP` with timestamp, operator, and reason. The PreToolUse hook blocks tool use while the sentinel exists.
- `$session resume`: remove `.cocoplus/AGENT_STOP` after confirming the operator intends to resume.

## Continuity Contract

Every CocoFlow or long-running operator session must be recoverable from files alone:

1. `.cocoplus/session/PROGRESS.md` is the human handoff.
2. `.cocoplus/session/CONTEXT.md` is machine-greppable predicate state in `CLASS.key=value` form.
3. `.cocoplus/session/task-queue.jsonl` records mid-session requests without replacing the active item.
4. New work is queued under Next unless the operator explicitly changes the current item.
5. `.cocoplus/session/iteration-budget.json` tracks cap, consumed turns, warning threshold, and stop state.
6. `.cocoplus/session/budget-state.json` tracks `normal`, `reserve`, or `exhausted` cost-budget state. Budget checks happen at stage boundaries only; in-flight stages are never interrupted.
7. `.cocoplus/session/status.json` and `.cocoplus/pod-state.json` use the canonical status vocabulary: `running`, `paused`, `completed`, `exited`, `failed`, `idle`, `retired`.

Read `PROGRESS.md` before resuming any long-running work. Cite `CONTEXT.md` predicates verbatim; do not paraphrase them into new state.

## Iteration Budget

`cocoplus.toml [session]` controls:

```toml
max_iterations = 200
iteration_warn_at = 160
budget_limit = 0.0
budget_reserve_fraction = 0.10
budget_enforcement = "stage-boundary"
```

The PostToolUse hook increments the consumed counter. At `warn_at`, CocoSession records a proactive checkpoint request in `session/steps.jsonl`. At `cap`, it creates `.cocoplus/AGENT_STOP` and writes the final budget state so the operator gets a clean handoff instead of an exhausted context window.

When `budget_limit` is set and `budget_enforcement = "stage-boundary"`, cost enforcement is seam-based. The reserve fraction is protected for landing work: final quality review, console state update, and handoff notes. A budget stop is `exited`, not `failed`, unless an execution error caused it.

`PROGRESS.md` must include:

```markdown
## Iteration Budget
Cap: 200
Consumed: 0
Warn At: 160
```

## ctx Supplement

When ctx is available, CocoSession may read `cortex ctx show all` as a supplement to `PROGRESS.md`:

- ctx tasks in task-list state map to `In Progress`.
- ctx ready steps map to `Next`.
- ctx discoveries map to session context additions.

Hard constraints:

- Never set `CTX_DIR` in CocoPlus production workflows. It changes `process.cwd()` and can break CocoPod-relative paths.
- Set `CTX_STEP_ENFORCEMENT=false` for CocoFlow stage execution so ctx gates do not conflict with CocoFlow gates.
- If ctx and CocoFlow disagree about the active task, CocoFlow takes precedence.

## Exit Criteria

- [ ] `PROGRESS.md` has Done / In Progress / Next / Notes sections.
- [ ] `PROGRESS.md` includes Iteration Budget when long-running work is active.
- [ ] Cost-budget state distinguishes `normal`, `reserve`, and `exhausted`.
- [ ] Terminal status uses the canonical vocabulary and does not collapse `exited` into `failed`.
- [ ] `CONTEXT.md` uses one predicate per line.
- [ ] Kill-switch and steering files are treated as operator controls, not permanent instructions.

## Anti-Rationalization

| Shortcut / Temptation | Why It Fails |
|-----------------------|--------------|
| Treat the skill as complete because the file exists | Skill contracts must describe observable behavior and verification, not just command names. |
| Skip artifact and safety checks for a small command | Small commands still mutate state or guide execution; preserve the same gates. |