chore(custodian): onboard repo-registry to Custodian State Hub

- Register under capabilities domain (foerster_capabilities renamed)
- Replace prose workplans with ADR-001 format (RREG-WP-0001 done, RREG-WP-0002 active)
- Add AGENTS.md for Codex agent state-hub integration via HTTP API
- Add SCOPE.md with domain context and v0.1 scope boundaries

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

workplans/RREG-WP-0001-mvp-implementation.md

@@ -0,0 +1,115 @@
+---
+id: RREG-WP-0001
+type: workplan
+title: "Repository Ability Registry — MVP Implementation"
+domain: capabilities
+repo: repo-registry
+status: done
+owner: codex
+topic_slug: foerster-capabilities
+created: "2026-04-26"
+updated: "2026-04-26"
+state_hub_workstream_id: "acee5529-43c0-4519-94bc-e59e61719af1"
+---
+
+# RREG-WP-0001 — MVP Implementation
+
+## Goal
+
+Prove the core registry loop: Register → Analyze → Review → Approve → Search/Inspect.
+
+Core design constraint: deterministic scanners establish observed facts; LLM-assisted
+extractors propose interpreted claims; humans or trusted agents approve registry truth.
+
+## Scaffold and Foundation
+
+```task
+id: RREG-WP-0001-T01
+status: done
+priority: high
+state_hub_task_id: "d26e70c9-e3a9-48f9-951c-c6210208aef4"
+```
+
+App skeleton, database migration setup, configuration system, health endpoint, basic
+test harness, local development instructions. Acceptance: app starts, tests run,
+migrations apply cleanly.
+
+## Manual Registry
+
+```task
+id: RREG-WP-0001-T02
+status: done
+priority: high
+state_hub_task_id: "e9c1cb9b-be21-4862-9443-a3e6c390882e"
+```
+
+Repository CRUD, manual ability/capability/feature/evidence CRUD, ability-map endpoint,
+basic repository profile UI. Acceptance: user can create a profile by hand; UI and API
+both display `Ability → Capability → Feature → Evidence`.
+
+## Git Ingestion and Deterministic Scanner
+
+```task
+id: RREG-WP-0001-T03
+status: done
+priority: high
+state_hub_task_id: "4a9fd9f0-d968-4778-93d4-609090c13c62"
+```
+
+Git URL validation, clone/fetch, snapshot with branch+commit hash, file tree scan,
+README/docs/examples/tests/manifest detection, language/framework detection, analysis
+run status tracking. Acceptance: public repo can be registered and analyzed; failures
+visible without corrupting prior data.
+
+## Reviewable Candidate Graph
+
+```task
+id: RREG-WP-0001-T04
+status: done
+priority: high
+state_hub_task_id: "9aa84fb5-998b-480e-adf8-3c1b0faa395a"
+```
+
+Content extraction, source references, candidate ability/capability/feature/evidence
+generation, confidence scoring, candidate graph endpoint and UI. Acceptance: candidates
+have source references and confidence; output is explainable for curator review.
+
+## Review and Approval Workflow
+
+```task
+id: RREG-WP-0001-T05
+status: done
+priority: high
+state_hub_task_id: "0b5cff5d-4bc8-48ca-aa41-2f1d0c774bed"
+```
+
+Approve/reject/edit/merge/relink candidates, publish approved profile, persist review
+decisions. Acceptance: curator can correct and approve an analysis result; only approved
+entries appear in canonical views.
+
+## Search and Inspection
+
+```task
+id: RREG-WP-0001-T06
+status: done
+priority: high
+state_hub_task_id: "13e506eb-017a-4710-b20b-ae10ac8df9d4"
+```
+
+Text search over repos/abilities/capabilities/descriptions, search filters, search UI,
+repository profile drill-down, code/evidence links. Acceptance: user can search by need;
+results show repo, ability/capability, confidence, evidence level.
+
+## API Completeness for Agents
+
+```task
+id: RREG-WP-0001-T07
+status: done
+priority: high
+state_hub_task_id: "cb94bb9c-756f-446a-8a59-54aa5a51eff0"
+```
+
+Full MVP REST API: GET/POST /repos, GET /repos/{id}, POST/GET /repos/{id}/analysis-runs,
+GET /repos/{id}/ability-map, GET /abilities, GET /capabilities, GET /search, OpenAPI
+examples. Acceptance: API covers registration, analysis, search, inspection; stable
+enough for agent/tooling integration.