Seed the org refactor: goal, scope, blast radius, entry gate

Establishes the prj- flavor baseline (GOAL.md, SCOPE.md, AGENTS.md,
.repo-classification.yaml, genesis, foundation workplan) for splitting the
single coulomb/ Forgejo org into stewardship orgs.

Records the blast radius verified 2026-08-11: 112 repos with a coulomb/ origin,
ArgoCD repoURL sources, Chart.yaml metadata, and - the finding that made this
project-sized rather than workplan-sized - container image paths, since
Forgejo's package registry is org-scoped. That failure is deferred: it does not
appear at rename time but at the next pod reschedule.

Seeded deliberately deferred per operator decision. ORGREF-WP-0001 is backlog
and carries a four-part entry gate (validator live, deployable coverage known,
stable re-runnable inventory, demonstrated rollback) so the decision to start
is made against evidence rather than memory. T01 and T02 are read-only and safe
to advance at any time.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

AGENTS.md

@@ -0,0 +1,45 @@
+# Agent session protocol — prj-forgejo-org-refactor
+
+Dev Hub (State Hub API): http://127.0.0.1:8000
+
+## Before anything else
+
+This project is **deliberately deferred**. Read `GOAL.md` "Why this is
+deferred" and the `ORGREF-WP-0001` entry gate before proposing execution work.
+T01 and T02 are read-only and safe to advance at any time; **T03 onward must
+not start until all four entry-gate conditions hold.**
+
+If you believe the gate is met, say which of the four conditions changed and
+what evidence shows it — do not infer readiness from elapsed time.
+
+## Session start
+
+1. `GOAL.md` → `SCOPE.md` → `history/` → `workplans/`
+2. `get_domain_summary("infotech")` when MCP tools are exposed, else
+   `curl -s http://127.0.0.1:8000/state/summary`
+3. `get_messages(to_agent="prj-forgejo-org-refactor", unread_only=True)`
+
+## During work
+
+`record_decision()` · `add_progress_event()` · `resolve_decision()`
+
+State Hub is a read model. **Never register workplans or tasks by hand.**
+Write the workplan file, commit, then run:
+
+```bash
+statehub fix-consistency --repo prj-forgejo-org-refactor
+```
+
+C-06 registers the workplan and writes IDs back into the file.
+
+## Boundary
+
+This repo coordinates; it hosts no production implementation. Child work lands
+in participating repos and is linked by stable ID, never copied.
+
+Do not absorb rapp-context or State Hub domain grouping into this project —
+they are separate dimensions (decision `d07ee5f9`, OAS P1).
+
+## Session close
+
+`add_progress_event()` with the workplan id, then `statehub fix-consistency`.