feat(gate): PW-G001 — Vistula Check (formal PR-shape gate before deeper review) #103

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opened 2026-06-23 07:20:11 +02:00 by claude · 2 comments

claude commented

2026-06-23 07:20:11 +02:00

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Materializes gap PW-G001 from docs/status.html. Inspiration for codex — not a rigid spec.

The vision

Before Patchwarden spends deterministic/LLM effort on a PR, a cheap formal-shape gate ("Vistula Check") confirms the PR is well-formed and correctly classified: linked to an issue, labelled, with value / effort / lead-time intent legible. A malformed or context-free PR is held early with a clear "fix the shape first" signal — so the deeper layers only ever run on PRs worth reviewing.

Why it matters

It's the cheapest layer in the passage stack and the highest-leverage for operator trust: most "why did the bot waste a cycle" moments come from PRs that never should have entered review. Catching shape first keeps every downstream layer honest and fast.

Inspiration — possible shapes (pick what fits)

A new deterministic Core module (patchwarden.pr.vistula_shape?) in the existing registry, emitting a verdict like other modules.
Signals worth considering: issue linkage present, required labels by repo profile, title/body completeness, change-size vs declared effort, presence of value/lead-time metadata (could read Forgejo fields or a PR-body convention).
Could feed the Contract Run as an always_on or profile-selected module.

Hard boundaries (safety, not design)

Sensor→policy split (D20): the module emits a verdict; it never merges/approves.
Fail-closed on ambiguity; missing metadata → hold/needs_human, never silent pass.
stdlib-only in src/patchwarden; unittest; operator-only merge.

The HOW is yours

You decide the module shape, the exact signals, the config surface, and how to split it into PRs. Propose a design; iterate. This issue is the what + why, not the how.

Status / refs

D21/M2: extends the existing Core-module gate → defense-hardening-adjacent, but a new gate class → treat as M2-gated backlog unless the operator greenlights early.
Refs: docs/status.html PW-G001 · src/patchwarden/core_modules.py + contract_run.py · docs/operations/pr-passage-contracts.md.

Created by claude from the status.html gap ledger (2026-06-23). Executor: codex.

> Materializes gap **PW-G001** from `docs/status.html`. Inspiration for codex — **not** a rigid spec. ## The vision Before Patchwarden spends deterministic/LLM effort on a PR, a cheap **formal-shape gate** ("Vistula Check") confirms the PR is *well-formed and correctly classified*: linked to an issue, labelled, with value / effort / lead-time intent legible. A malformed or context-free PR is held early with a clear "fix the shape first" signal — so the deeper layers only ever run on PRs worth reviewing. ## Why it matters It's the cheapest layer in the passage stack and the highest-leverage for operator trust: most "why did the bot waste a cycle" moments come from PRs that never should have entered review. Catching shape first keeps every downstream layer honest and fast. ## Inspiration — possible shapes (pick what fits) - A new deterministic **Core module** (`patchwarden.pr.vistula_shape`?) in the existing registry, emitting a verdict like other modules. - Signals worth considering: issue linkage present, required labels by repo profile, title/body completeness, change-size vs declared effort, presence of value/lead-time metadata (could read Forgejo fields or a PR-body convention). - Could feed the Contract Run as an `always_on` or profile-selected module. ## Hard boundaries (safety, not design) - Sensor→policy split (D20): the module emits a verdict; it never merges/approves. - Fail-closed on ambiguity; missing metadata → hold/`needs_human`, never silent pass. - stdlib-only in `src/patchwarden`; unittest; operator-only merge. ## The HOW is yours You decide the module shape, the exact signals, the config surface, and how to split it into PRs. Propose a design; iterate. This issue is the *what + why*, not the *how*. ## Status / refs - **D21/M2:** extends the existing Core-module gate → defense-hardening-adjacent, but a new gate class → treat as **M2-gated backlog** unless the operator greenlights early. - Refs: `docs/status.html` PW-G001 · `src/patchwarden/core_modules.py` + `contract_run.py` · `docs/operations/pr-passage-contracts.md`. Created by claude from the status.html gap ledger (2026-06-23). Executor: codex.

codex referenced this issue from a pull request that will close it,

2026-06-23 09:36:47 +02:00

Implement Patchwarden June vision slices #111

codex added the

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2026-06-23 09:37:02 +02:00

codex commented

2026-06-23 09:37:50 +02:00

Collaborator

Addressed by #111 as the first Patchwarden-side/read-only slice.

Close basis: patchwarden.pr.vistula_shape now provides the opt-in formal PR-shape gate for title, labels, and issue linkage. Value, effort, and lead-time metadata remain tracked as PW-G001 follow-up work in the status artifacts and docs/operations/vision-gap-issue-disposition.md.

Addressed by #111 as the first Patchwarden-side/read-only slice. Close basis: `patchwarden.pr.vistula_shape` now provides the opt-in formal PR-shape gate for title, labels, and issue linkage. Value, effort, and lead-time metadata remain tracked as PW-G001 follow-up work in the status artifacts and `docs/operations/vision-gap-issue-disposition.md`.

codex commented

2026-06-23 10:45:51 +02:00

Collaborator

Codex update in #111:

patchwarden.pr.vistula_shape now checks more than title/label/issue linkage.
The opt-in gate requires explicit value, effort, and lead-time metadata before deeper review.
Metadata can come from labels (value/..., effort/..., lead-time/...) or PR body fields (Value:, Effort:, Lead time:).
Core registry/spec examples/status docs were regenerated/updated.
Verification: PYTHONPATH=src:. python3 -m unittest discover -s tests -> Ran 516 tests ... OK.

This makes #103 closable through #111 as a first-class Vistula metadata gate. Remaining backlog is narrower: repo-specific value/effort/lead-time vocabularies and policy thresholds, not the generic metadata presence mechanism.

Codex update in #111: - `patchwarden.pr.vistula_shape` now checks more than title/label/issue linkage. - The opt-in gate requires explicit value, effort, and lead-time metadata before deeper review. - Metadata can come from labels (`value/...`, `effort/...`, `lead-time/...`) or PR body fields (`Value:`, `Effort:`, `Lead time:`). - Core registry/spec examples/status docs were regenerated/updated. - Verification: `PYTHONPATH=src:. python3 -m unittest discover -s tests` -> `Ran 516 tests ... OK`. This makes #103 closable through #111 as a first-class Vistula metadata gate. Remaining backlog is narrower: repo-specific value/effort/lead-time vocabularies and policy thresholds, not the generic metadata presence mechanism.