feat(openprd): revise standard to DIP-style numbered proposals (0.2) (#96)

Reshape OpenPRD from a private single-file (prd/<slug>/prd.md, gitignored) into a
published, numbered proposal collection like BIP/EIP/DIP: prd/NNNN-slug.md +
0000-template.md + a README index, committed to the repo, with a lifecycle
(Draft → Review → Accepted → Final; Rejected/Withdrawn/Superseded).

Tools (e.g. moshcode /prd) consume this to publish PRDs into whatever repo the
user is working in.

- docs/openprd.md — rewritten: numbering, lifecycle, directory layout, conformance.
- docs/openprd/0000-template.md — the canonical template.
- packages/schemas/schemas/openprd-prd.schema.json — 4-digit id, status enum,
  authors, discussion/implementation, supersedes/superseded-by.
- fixture updated to 0.2.

Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>

packages/schemas/fixtures/openprd-prd.yaml

@@ -1,10 +1,12 @@
-openprd: "0.1"
-id: park-service-expansion
-title: Parked-domain service expansion
-status: draft
-owner: moshcoder.coinpay
+openprd: "0.2"
+id: "0001"
+title: Expand the parked-domain service
+status: Draft
+authors:
+  - anthony@profullstack.com
 repo: moshcoder/moshcoding
 created: 2026-07-12
+updated: 2026-07-12
 tags:
   - growth
   - monetization

packages/schemas/schemas/openprd-prd.schema.json

@@ -2,7 +2,7 @@
   "$schema": "https://json-schema.org/draft/2020-12/schema",
   "$id": "https://schemas.logicsrc.com/openprd-prd.schema.json",
   "title": "OpenPRD Product Requirements Document",
-  "description": "The front-matter manifest of an OpenPRD document. OpenPRD is a deliberately lightweight, single-file PRD standard: one prd/<slug>/prd.md per product decision, authored by a human or an AI agent. The document body is Markdown with a fixed set of sections; this schema governs only the YAML front-matter. PRD documents are private by convention (gitignored) — only the OpenPRD standard itself is published.",
+  "description": "The front-matter manifest of an OpenPRD document. OpenPRD is a lightweight, DIP-style proposal standard: a repo publishes a numbered collection of PRDs under prd/ (prd/NNNN-slug.md), with a 0000-template.md and a README index, committed to the repo like a BIP/EIP/DIP process. This schema governs the YAML front-matter; the body is Markdown with a fixed set of sections.",
   "type": "object",
   "required": ["openprd", "id", "title", "status"],
   "additionalProperties": false,
@@ -10,26 +10,33 @@
     "openprd": {
       "type": "string",
       "pattern": "^\\d+\\.\\d+(\\.\\d+)?$",
-      "description": "OpenPRD standard version this document conforms to, e.g. '0.1'."
+      "description": "OpenPRD standard version this document conforms to, e.g. '0.2'."
     },
     "id": {
       "type": "string",
-      "pattern": "^[a-z0-9][a-z0-9-]*$",
-      "description": "Kebab-case slug, unique within the repo. Also the directory name: prd/<id>/prd.md."
+      "pattern": "^\\d{4}$",
+      "description": "Four-digit zero-padded number, monotonically increasing with no gaps. Matches the filename prefix: prd/<id>-<slug>.md."
     },
     "title": {
       "type": "string",
       "minLength": 1,
-      "description": "Human-readable product/feature title."
+      "description": "Short imperative title — start with a verb where possible."
     },
     "status": {
       "type": "string",
-      "enum": ["draft", "review", "active", "shipped", "archived"],
-      "description": "Lifecycle stage of the PRD."
+      "enum": ["Draft", "Review", "Accepted", "Final", "Rejected", "Withdrawn", "Superseded"],
+      "description": "Lifecycle stage. Draft → Review → Accepted → Final; or Rejected/Withdrawn/Superseded."
+    },
+    "authors": {
+      "type": "array",
+      "items": { "type": "string" },
+      "minItems": 1,
+      "uniqueItems": true,
+      "description": "Author identities — email, handle, or DID."
     },
     "owner": {
       "type": "string",
-      "description": "Optional DID or handle of the accountable owner, e.g. a LogicSRC agent or account DID."
+      "description": "Optional DID or handle of the accountable owner (e.g. a LogicSRC account/agent DID)."
     },
     "repo": {
       "type": "string",
@@ -45,6 +52,14 @@
       "format": "date",
       "description": "ISO date (YYYY-MM-DD) of the last substantive edit."
     },
+    "discussion": {
+      "type": "string",
+      "description": "Optional URL to the PR/issue/thread where this PRD is discussed."
+    },
+    "implementation": {
+      "type": "string",
+      "description": "Optional URL/reference to the implementation PR or tracking issue."
+    },
     "tags": {
       "type": "array",
       "items": { "type": "string" },
@@ -52,10 +67,14 @@
       "description": "Optional freeform labels for grouping PRDs."
     },
     "supersedes": {
-      "type": "array",
-      "items": { "type": "string", "pattern": "^[a-z0-9][a-z0-9-]*$" },
-      "uniqueItems": true,
-      "description": "Optional ids of earlier PRDs this one replaces."
+      "type": "string",
+      "pattern": "^\\d{4}$",
+      "description": "Optional id of an earlier PRD this one replaces."
+    },
+    "superseded-by": {
+      "type": "string",
+      "pattern": "^\\d{4}$",
+      "description": "Optional id of a later PRD that replaces this one."
     }
   }
 }