Converge

---
name: converge
description: "Assess the current codebase against the feature's spec, plan, and tasks, then append any remaining unbuilt work as new tasks to tasks.md so implement can complete it."
---

## User Input

You **MUST** consider the user input before proceeding (if not empty).

## Goal

Close the gap between what a feature's specification, plan, and tasks call for and what the
codebase currently implements. Read `spec.md`, `plan.md`, and `tasks.md` as the **sole
source of intent** (with the constitution as governing constraints), assess the current
state of the code, determine which requirements, acceptance criteria, plan decisions, and
existing tasks are unmet, incomplete, or only partially satisfied, and **append each piece
of remaining work as a new, traceable task** at the bottom of `tasks.md` so that
`/akka:implement` can complete it. This command MUST run only after
`/akka:implement` has run on the current `tasks.md`, and after
`/akka:tasks` has produced a complete `tasks.md`.

This is **not** a diff tool and does **not** track changes. It assesses the present state
of the code relative to the feature's artifacts — no git, no branch comparison, no history.

## Operating Constraints

**APPEND-ONLY, NEVER REWRITE**: The command's **only** write is appending a new
`## Phase N: Convergence` section to `tasks.md`. It MUST NOT:

- modify `spec.md` or `plan.md` in any way;
- rewrite, renumber, reorder, or delete any existing task (including tasks from a prior
  Convergence phase);
- modify, create, or delete any application code — completing the appended tasks is the
  job of `/akka:implement`.

When the codebase already satisfies everything, the command MUST leave `tasks.md`
**byte-for-byte unchanged** (no empty Convergence header) and report a clean result.

**Constitution Authority**: The project constitution (loaded via `akka_sdd_constitution`)
is **non-negotiable**. Code that violates a MUST principle is the highest-severity finding
and produces a corresponding remediation task. If the constitution is an unfilled template
or unavailable, skip constitution checks gracefully rather than failing.

## Execution Steps

### 1. Initialize Convergence Context

Call the `akka_sdd_list_specs` MCP tool to find features. Identify the target feature's
FEATURE_DIR and verify that `spec.md`, `plan.md`, and `tasks.md` all exist (has_spec,
has_plan, has_tasks must all be true). Derive absolute paths:

- SPEC = FEATURE_DIR/spec.md
- PLAN = FEATURE_DIR/plan.md
- TASKS = FEATURE_DIR/tasks.md

If any of these is missing, STOP with a clear, actionable message naming the prerequisite
command to run (`/akka:specify` for a missing spec, `/akka:plan` for a
missing plan, `/akka:tasks` for missing tasks). Do not produce partial output.

Load the constitution via `akka_sdd_constitution`. If it returns an unfilled template or
is otherwise unavailable, note this and skip constitution checks in later steps.

### 2. Load Artifacts (Progressive Disclosure)

Load only the minimal necessary context from each artifact:

**From spec.md:**

- Functional Requirements (FR-###)
- Success Criteria (SC-###) — include only items requiring buildable work; exclude
  post-launch outcome metrics and business KPIs
- User Stories and their Acceptance Scenarios
- Edge Cases (if present)

**From plan.md:**

- Architecture/stack choices and technical decisions
- Data Model references
- Phases and named touch-points (files/components the plan says will be created or edited)
- Technical constraints

**From tasks.md:**

- Task IDs (to compute the next ID and next phase number)
- Descriptions, phase grouping, and referenced file paths

**From constitution (if not an unfilled template):**

- Principle names and MUST/SHOULD normative statements

### 3. Build the Intent Inventory

Create an internal model (do not echo raw artifacts):

- **Requirements inventory**: one stable key per FR-### / SC-### / user-story acceptance
  scenario (e.g. `US1/AC2`), plus the plan decisions and constitution principles that
  impose buildable obligations.
- **Code-scope map**: from the file paths named in `plan.md` and `tasks.md`, plus a keyword
  search for the concepts each requirement describes, derive the set of source files and
  components in scope for assessment. Bound the assessment to these — do **not** infer
  scope beyond what the artifacts define.

### 4. Assess the Codebase and Classify Findings

For each item in the intent inventory, inspect the current code in scope and produce a
`Finding` only where there is a gap. Classify every finding by **gap type**:

- **`missing`**: the required work is absent from the code entirely.
- **`partial`**: the work exists but does not yet fully satisfy the requirement /
  acceptance criterion / plan decision.
- **`contradicts`**: the code does something that conflicts with stated intent or a
  constitution MUST principle.
- **`unrequested`**: the code contains work not called for by the spec, plan, or tasks
  (surfaced for awareness — converge does **not** delete code, it only appends a task to
  review/justify or remove it).

Each `Finding` records: a stable id, the `source-ref` it traces to, the `gap-type`, a
severity, and a short human-readable description with the evidence (the file/area observed).

**Edge cases:**

- **Little or no code yet**: treat the entire specified scope as `missing` remaining work
  rather than failing.
- **Nothing remains**: produce zero findings and follow the converged branch in Step 7.

### 5. Assign Severity

- **CRITICAL**: violates a constitution MUST principle, or a `missing`/`contradicts` gap
  that blocks baseline functionality of a P1 user story.
- **HIGH**: a `missing` or `partial` gap on a core functional requirement or acceptance
  criterion.
- **MEDIUM**: a `partial` gap on a secondary requirement, or an `unrequested` addition with
  unclear justification.
- **LOW**: minor partial gaps, polish, or low-risk `unrequested` additions.

### 6. Present the In-Session Findings Summary

Before appending anything, output a compact, severity-graded summary (no file writes yet):

## Convergence Findings

| ID | Gap Type | Severity | Source | Evidence | Remaining Work |
|----|----------|----------|--------|----------|----------------|
| F1 | missing  | HIGH     | FR-008 | Example: no append-only guard detected in src/main/java/... when writing tasks.md | Add append-only enforcement |

**Summary metrics:**

- Requirements / acceptance criteria checked
- Plan decisions checked
- Constitution principles checked (or "skipped — template")
- Findings by gap type (missing / partial / contradicts / unrequested)
- Findings by severity

### 7. Append Convergence Tasks (or report converged)

**If there are one or more actionable findings** (`tasks_appended` outcome):

Append to the **end** of `tasks.md`, per the append contract:

1. Scan all existing task IDs; let `M` be the maximum. Determine the next phase number `N`
   (highest existing phase + 1).
2. Write a single new section header `## Phase N: Convergence`.
3. Emit one checklist item per actionable finding, ordered CRITICAL/HIGH first, assigning
   zero-padded IDs `T{M+1:03d}, T{M+2:03d}, …`:

   ```markdown
   - [ ] T042 <imperative description> per <source-ref> (<gap-type>)
   ```

   `<source-ref>` traces the task to its origin: e.g. `FR-003`, `SC-002`,
   `US1/AC2`, `plan: storage decision`, `Constitution II`.

   `<gap-type>` is one of `missing`, `partial`, `contradicts`, `unrequested`.

   Constitution-violation tasks MUST be emitted first and described as
   `CRITICAL`.
4. Never reuse or renumber existing IDs. If a prior Convergence phase exists, add a new,
   separately-numbered one below it — do not touch the old one.

**If there are no actionable findings** (`converged` outcome):

- Do **not** modify `tasks.md` at all — no empty phase header.
- Report: **"✅ Converged — the implementation satisfies the spec, plan, and tasks."**
- Include the summary counts of what was checked.

### 8. Provide Next Actions (Handoff)

- On `tasks_appended`: state how many tasks were appended under which phase, and recommend
  running `/akka:implement` to complete them; note that a follow-up converge
  run will find fewer or no remaining items.
- On `converged`: recommend proceeding to `/akka:review` or opening a PR. No
  further implement pass is needed for this feature's specified scope.

## Done When

- [ ] `akka_sdd_list_specs` returned a valid FEATURE_DIR and `spec.md`, `plan.md`, `tasks.md` were all located (or the command stopped with the correct prerequisite guidance).
- [ ] Constitution was loaded via `akka_sdd_constitution` (or skipped gracefully because it is an unfilled template / unavailable).
- [ ] The intent inventory covers every FR-###, buildable SC-###, user-story acceptance scenario, plan decision, and (if loaded) MUST-level constitution principle in the current artifacts.
- [ ] Every finding traces to an explicit `source-ref` and carries a `gap-type` from {`missing`, `partial`, `contradicts`, `unrequested`}.
- [ ] Constitution MUST violations, if any, are reported as CRITICAL and appear first in the appended task list.
- [ ] Outcome is exactly one of `converged` or `tasks_appended`, reported explicitly.
- [ ] On `converged`: `tasks.md` is byte-for-byte unchanged (no empty `## Phase N: Convergence` header).
- [ ] On `tasks_appended`: a single new `## Phase N: Convergence` section was appended, task IDs continue from `M+1`, no existing task was modified or renumbered, and no application code was created, modified, or deleted.
- [ ] Next-action recommendation names the specific follow-up command (`/akka:implement` or `/akka:review`).