weave-slices

name	weave-slices
description	Scaffold task-slices folders from upstream artifacts using tracer-bullet vertical slices, per-slice tasks, and slice-level technical contracts.
last_changed_in	0.1.11

Weave Slices

Silent Weave Command Output

Weave skills run Weave CLI commands silently by default. Use command results as internal context, not response content.

Do not show raw stdout, JSON payloads, command echoes, lifecycle payloads, internal state-write confirmations, or verbatim notice text unless the user explicitly asks for diagnostic output.

Surface only information that changes what the user or agent should do next: blockers, failures, missing relevant repos, branch or task outcomes, lifecycle failures, package-outdated notices, relevant outdated or modified skills, and user-required actions.

Notice handling:

• package_outdated: show only when present. Say exactly: A newer Weave version is available. Run \weave status` for details, then upgrade Weave when convenient.`
• skills_outdated: suppress unrelated skills. If the invoked skill is outdated, say: The installed \` skill appears older than the bundled template. Run `weave status` for details, then `weave agent update --all` when you want to refresh installed skills.`
• skills_outdated: if multiple skills used in this workflow are outdated, say: Some installed skills used in this workflow appear older than the bundled templates: \`, ``. Run `weave status` for details, then `weave agent update --all` when you want to refresh them.`
• skills_modified: suppress unless the invoked skill is modified locally or the user is asking about skill updates. If the invoked skill is modified, say: The installed \` skill has local edits, so its behavior may differ from the bundled template. Run `weave status` or `weave agent diff` if you want to inspect the difference.`
• skills_modified: if the user asks to update skills and installed skills have local edits, say: Some installed skills have local edits. \weave agent update` may skip or protect them; run `weave status` or `weave agent diff` before updating.`

Do not say Notices: ..., The command returned notices, raw notices[].message, full notice JSON, or full skill lists unless the user asks for diagnostics.

Break a change into vertical slices under task-slices/<NN>-<slug>/. Each slice gets slice.md, contracts.md, tasks.md, and status.yml. The change-level task-slices/dependency-graph.md is rollup-derived when there are two or more slices.

weave-slices replaces the legacy flat tasks.md model for new sliced changes.

Upstream Inputs By Change Type

• --type feat: prd.md + architecture/ (both required).
• --type fix: findings.md (required) + architecture/ (optional).
• --type chore / --type refactor: exploration.md (required) + architecture/ (optional).

Outputs

wiki/changes/<change-id>/task-slices/
  <NN>-<slug>/
    slice.md
    contracts.md
    tasks.md
    status.yml

Generation Rules

• Allocate all slice IDs atomically in one pass (01, 02, …). Never renumber slices with in_progress or done tasks.
• Every task has explicit Repos: (csv). No path-to-repo derivation.
• Owner: left blank in tasks.md and status.yml.
• Execution: defaults to afk for all generated tasks. Use hitl only when the user explicitly asks to mark a particular architecture area, slice, or task as human-in-the-loop.
• Blocked by: is within-slice only. Cross-slice ordering uses status.yml.depends_on.
• Populate depends_on from architecture cues; surface ambiguities in the completion response.
• contracts.md uses slice-level technical contracts (Interfaces, Data, State, Validation; adaptive sections — not FE/BE-only).
• For fix-type single-slice changes, skip slice.md / contracts.md when nothing meaningful to write.

Verification Tasks

Every slice must include explicit verification tasks. Do not leave verification implied inside implementation tasks only.

• Prefer tests closest to the changed behavior: unit, integration, request/API, component, E2E, migration/data, or regression tests as applicable.
• Name the behavior, boundary, or regression being verified. Good titles: Verify approver picker rejects empty selection, Regression: list endpoint returns 404 for unknown workflow.
• Bad titles: Write tests, Add test coverage, Test the feature.
• Put automated verification in each task's ### Verification section with concrete commands (for example npm test -- ApproverPicker, npm test -- listApprovers).
• When automated tests are not practical for a slice, add a dedicated manual verification task with numbered steps and an expected result.
  • Manual verification tasks are afk only when the steps are fully mechanical and can be performed by the agent in the available environment.
  • Mark manual verification as hitl when it requires a browser-only check, product judgment, visual approval, credentials, customer data, production access, or human acceptance.
• Verification tasks may be the final task in a slice (Blocked by: the implementation tasks they cover) or embedded in the same tracer-bullet task when the slice is small — but the verification expectation must be explicit either way.

Idempotent Re-Run

When task-slices/ already exists:

• Inspect current slices vs upstream artifacts.
• Propose additive expansion only.
• Never silently move in_progress or done tasks.
• Destructive changes require explicit user confirmation.

Templates

Use files under templates/skills/weave-slices/:

• slice-template.md
• contracts-template.md
• tasks-template.md
• status-template.yml
• dependency-graph-template.md (reference only; rollup generates the live file)

After Scaffolding

1. Run weave slice rollup --all --json.
2. Run weave change progress slices --source <upstream> --json (architecture for feat; findings or architecture for fix; exploration for chore/refactor).
3. Report slice folders, dependency hints, and next step (/weave-next or /weave-execute <slice-id> T1).

Lifecycle

Follow the Lifecycle Progress and Staleness protocol before calling weave change progress.

Do not commit, push, or open PRs.

Lifecycle Staleness Verification

Before calling weave change progress, verify content-sync of every artifact that would otherwise be marked stale by the default pessimistic propagation.

The --source arguments of weave change progress declare causal influence, not strict-DAG dependency. Pessimistic staleness propagation is the safe default, not the only correct answer. When the clarification this skill just performed is narrowly contained (a typo fix, a sentence rewording, an open-question resolution), dependents may already be in content sync; flagging them stale creates churn the user did not ask for.

Procedure:

1. Identify the set of structural dependents of the lane being progressed. Read wiki/changes/<change-id>/status.yml and compute which lanes list this lane in their artifacts.<lane>.sources.

2. For each dependent lane, read both the dependent artifact and the artifact just being progressed. Decide whether the change you just made invalidates the dependent's content. The judgement is binary per lane: invalidates, or does not invalidate.

3. Select the appropriate progress invocation:

   • Every dependent is invalidated (or there are no dependents): weave change progress <lane> --source <list> --json (default, no new flags)
   • No dependent is invalidated: weave change progress <lane> --source <list> --no-invalidate --json
   • Some dependents are invalidated, some are not: weave change progress <lane> --source <list> --invalidate=<comma-list> --json

4. If a previously-stale dependent is now in content sync (because the upstream change has been absorbed but the stale flag still lingers from an earlier pessimistic propagation), clear it explicitly:

   weave change clear-stale <lane> --reason "<one-sentence verification>" --json

   Always pass --reason so the audit entry in stale_history carries the verification rationale. Do not clear flags without reading both artifacts.

5. Never edit status.yml by hand to manipulate stale state. Use the CLI.

Failure mode: if you are uncertain whether a dependent is in content sync, prefer the pessimistic default (omit --no-invalidate and --invalidate). The user can always run weave-clarify <lane> later. A false-positive stale flag is recoverable; silently leaving a real downstream artifact mismatched is not.